| **Income Taxes (Details) (USD $)**                                                                                                 | 12 Months Ended |
|------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Income Taxes [Abstract]**                                                                                                        |            |   |   |
| Income tax benefit                                                                                                                 | $ 0             | $ 0 | $ 95,000 |
| **Deferred tax assets and liabilities [Abstract]**                                                                                 |            |   |   |
| Depreciation and amortization                                                                                                      | 6,497,000       | 6,865,000 |   |
| R&E tax credit carry-forwards                                                                                                  | 11,843,000      | 11,966,000 |   |
| NYS investment tax credit carry-forwards                                                                                           | 1,084,000       | 1,088,000 |   |
| AMT credit carry-forwards                                                                                                          | 211,000         | 211,000 |   |
| Net operating loss carry-forwards                                                                                                  | 112,966,000     | 85,110,000 |   |
| Capitalized research and development expenditures                                                                                  | 30,884,000      | 43,113,000 |   |
| Stock compensation                                                                                                                 | 14,436,000      | 13,789,000 |   |
| Deferred tax assets, net                                                                                                           | 2,069,000       | 0 |   |
| Other items                                                                                                                        | 2,193,000       | 3,600,000 |   |
| Deferred tax assets, gross                                                                                                         | 180,114,000     | 165,742,000 |   |
| Valuation allowance                                                                                                                | (178,045,000)   | (165,742,000) |   |
| Deferred Tax Assets, Net of Valuation Allowance                                                                                    | 2,069,000       |   |   |
| Deferred tax liability - current                                                                                                   | 2,069,000       | 0 |   |
| Net deferred tax asset (liability)                                                                                                 | 0               | 0 |   |
| **Reconciliation of income taxes computed at the Federal statutory income tax rate to the actual effective income tax [Abstract]** |            |   |   |
| U.S. Federal statutory rate (in hundredths)                                                                                        | (35.00%)        | 35.00% | (34.00%) |
| State income taxes, net of Federal benefit (in hundredths)                                                                         | (5.40%)         | 8.00% | (5.10%) |
| Research and experimental tax credit (in hundredths)                                                                               | 0.00%           | (4.10%) | (1.70%) |
| Change in valuation allowance (in hundredths)                                                                                      | 34.70%          | (22.60%) | 38.20% |
| Effect of federal tax rate bracket change on valuation allowance (in hundredths)                                                   | 0.00%           | (34.80%) | 0.00% |
| Equity compensation (in hundredths)                                                                                                | 4.20%           | 17.00% | 2.30% |
| Investment tax credit (in hundredths)                                                                                              | 0.00%           | (0.10%) | 0.10% |
| Other (in hundredths)                                                                                                              | 1.50%           | 1.60% | 0.10% |
| Income tax provision (benefit) (in hundredths)                                                                                     | 0.00%           | 0.00% | (0.10%) |
| Net operating loss carryforwards                                                                                                   | 298,000,000     |   |   |
| Net operating loss carry-forwards not reflected in deferred tax assets                                                             | 18,200,000      |   |   |
| Valuation allowance related to net operating loss carryforwards attributable to excess tax deductions for equity compensation      | 11,400,000      |   |   |
| Unrecognized tax benefits                                                                                                          | 0               | 0 | 0 |
| Tax credit carryforwards of R&E expired                                                                                        | 125,000         |   |   |
| Deferred Tax Assets, Net, Current                                                                                                  | 17,000          |   |   |
| Deferred Tax Assets, Net, Noncurrent                                                                                               | $ 2,052,000     | $ 0 |   |

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards expired during period.
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Refers to the portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance.
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Operating loss carryforwards generated from deductions that, when realized, will reduce taxes payable and will increase paid-in-capital and are not reflected in our deferred tax assets.
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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed after one year (or the normal operating cycle, if longer).
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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.
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| - Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of deferred tax liability attributable to taxable temporary differences, net of deferred tax asset attributable to deductible temporary differences and carryforwards net of valuation allowances expected to be realized or consumed within one year or operating cycle, if longer.
+ References
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| - Definition
A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.
+ References
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| - Definition
The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.
+ References
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| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance for deferred tax assets.
+ References
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| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to differences in the deductibility or nondeductibility of incentive stock options and other equity-based compensation costs in accordance with generally accepted accounting principles and enacted tax laws.
+ References
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| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.
+ References
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| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.
+ References
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by investment tax credits generated or utilized under enacted tax laws during the period.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by research tax credits generated or utilized under enacted tax laws during the period.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.
+ References
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