| **Income Taxes (Details) (USD $)**                                                                                                 | 12 Months Ended |               |
|------------------------------------------------------------------------------------------------------------------------------------|-----------------|---------------|
||
| **Income Taxes [Abstract]**                                                                                                        |            |          |   |   |
| Income tax provision (benefit)                                                                                                     | $ (362,000)     | $ 0           | $ 0 |   |
| **Deferred tax assets and liabilities [Abstract]**                                                                                 |            |          |   |   |
| Depreciation and amortization                                                                                                      | 6,165,000       | 6,497,000     |   |   |
| R&E tax credit carry-forwards                                                                                                  | 5,129,000       | 11,843,000    |   |   |
| NYS investment tax credit carry-forwards                                                                                           | 1,095,000       | 1,084,000     |   |   |
| AMT credit carry-forwards                                                                                                          | 211,000         | 211,000       |   |   |
| Net operating loss carry-forwards                                                                                                  | 190,263,000     | 112,966,000   |   |   |
| Capitalized research and development expenditures                                                                                  | 25,231,000      | 30,884,000    |   |   |
| Stock compensation                                                                                                                 | 13,826,000      | 14,436,000    |   |   |
| Other items                                                                                                                        | 1,097,000       | 2,193,000     |   |   |
| Total gross deferred tax assets                                                                                                    | 243,017,000     | 180,114,000   |   |   |
| Less: Valuation allowance                                                                                                          | (243,017,000)   | (178,045,000) |   |   |
| Deferred tax assets                                                                                                                | 0               | 2,069,000     |   |   |
| Deferred tax liability - current                                                                                                   | 0               | (2,069,000)   |   |   |
| Deferred tax liability - long term                                                                                                 | (12,321,000)    | 0             |   | (12,683,000) |
| Net deferred tax asset (liability)                                                                                                 | (12,321,000)    | 0             |   |   |
| Deferred tax assets, net, current                                                                                                  |            | 17,000        |   |   |
| Deferred tax assets, net, noncurrent                                                                                               | 0               | 2,052,000     |   |   |
| **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)                                                                                        | (34.00%)        | (35.00%)      | 35.00% |   |
| State income taxes, net of Federal benefit (in hundredths)                                                                         | (4.90%)         | (5.40%)       | 8.00% |   |
| Research and experimental tax credit (in hundredths)                                                                               | (3.60%)         | 0.00%         | (4.10%) |   |
| Change in valuation allowance (in hundredths)                                                                                      | 11.40%          | 34.70%        | (22.60%) |   |
| Effect of federal tax rate bracket change on valuation allowance (in hundredths)                                                   | 8.70%           | 0.00%         | (34.80%) |   |
| Equity compensation (in hundredths)                                                                                                | 3.10%           | 4.20%         | 17.00% |   |
| Investment tax credit (in hundredths)                                                                                              | (0.10%)         | 0.00%         | (0.10%) |   |
| NOL expiration - Section 382                                                                                                       | 18.60%          | 0.00%         | 0.00% |   |
| Other (in hundredths)                                                                                                              | 0.00%           | 1.50%         | 1.60% |   |
| Income tax provision (benefit) (in hundredths)                                                                                     | (0.80%)         | 0.00%         | 0.00% |   |
| Net operating loss carryforwards - federal                                                                                         | 513,800,000     |          |   |   |
| Net operating loss carryforwards - state                                                                                           | 453,100,000     |          |   |   |
| Unrecognized tax benefit amount that would affect effective tax rate                                                               | 0               |          |   |   |
| 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      | 11,200,000      |          |   |   |
| Unrecognized tax benefits                                                                                                          | (362,000)       | 0             | 0 |   |
| Tax credit carryforwards of R&E expired                                                                                        | 20,000          |          |   |   |
| Deferred tax assets                                                                                                                | 0               | 2,069,000     |   |   |
| Deferred Tax Liabilities, Net, Current                                                                                             | 0               | 2,069,000     |   |   |
| Deferred tax liability - long term                                                                                                 | 12,321,000      | 0             |   | 12,683,000 |
| Tax Credit Carryforward, Amount                                                                                                    | 5,100,000       |          |   |   |
| **Income Taxes [Abstract]**                                                                                                        |            |          |   |   |
| Unrecognized tax benefits                                                                                                          | 2,661,000       | 2,661,000     |   |   |
| Current year - increases                                                                                                           | 0               |          |   |   |
| Current year - decreases                                                                                                           | 0               |          |   |   |
| Settlements                                                                                                                        | 0               |          |   |   |
| Expired statuses                                                                                                                   | $ 0             |          |   |   |

| X                                                                                                                                                                                                                                                                                                                                                                                   |
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| - Definition
Gross amount of acquisition cost of a business combination allocated to noncurrent deferred tax liabilities.
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Refers to amount before allocation of valuation allowances of deferred tax asset capitalized research and development expenditures.
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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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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards expired during period.
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| - Definition
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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Net deferred tax asset (liability)
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NOL expiration - Section 382
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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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 of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
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| - Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.
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Unrecognized tax benefit amount that would affect effective tax rate
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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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| - Definition
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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| - Definition
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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| - 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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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.
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| - Definition
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of domestic federal statutory tax rate applicable to pretax income (loss).
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to equity-based compensation costs.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to investment tax credit.
+ References
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| - Definition
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.
+ References
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| - Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
+ 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 amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.
+ References
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| - Definition
Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.
+ References
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| - Definition
Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.
+ References
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| - Definition
Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.
+ References
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| - Definition
Amount of increase in unrecognized tax benefits resulting from settlements with taxing authorities.
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| - Definition
Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.
+ References
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