| **Income Taxes (Tables)**                                             | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
||
| **Income Taxes [Abstract]**                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Schedule of deferred tax assets and liabilities                       | Deferred tax assets and liabilities as of December 31, 2013 and 2012, consisted of the following:  2013  2012 Deferred tax assets:    Depreciation and amortization $6,165  $6,497 R&E tax credit carry-forwards  5,129   11,843 NYS investment tax credit carry-forwards  1,095   1,084 AMT credit carry-forwards  211   211 Net operating loss carry-forwards  190,263   112,966 Capitalized research and development expenditures  25,231   30,884 Stock compensation  13,826   14,436 Other items  1,097   2,193 Total gross deferred tax assets  243,017   180,114 Less: Valuation allowance  (243,017)  (178,045)Deferred tax assets  -   2,069 Deferred tax liability - current  -   (2,069)Deferred tax liability – long term  (12,321)  - Net deferred tax liability $(12,321) $-   |
| Schedule of reconciliation of income taxes                            | The following is a reconciliation of income taxes computed at the Federal statutory income tax rate to the actual effective income tax provision during 2013, 2012 and 2011:  2013  2012  2011        U.S. Federal statutory rate  (34.0)%  (35.0)%  35.0%State income taxes, net of Federal benefit  (4.9)  (5.4)  8.0 Research and experimental tax credit  (3.6)  -   (4.1)Change in valuation allowance  11.4   34.7   (22.6)Effect of federal tax rate bracket change on valuation allowance  8.7   -   (34.8)Equity compensation  3.1   4.2   17.0 Investment tax credit  (0.1)  -   (0.1)NOL expiration – Section 382  18.6   -   - Other  -   1.5   1.6 Income tax provision (benefit)  (0.8)%  0.0%  0.0%                                                 |
| Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] | As of December 31, 2013, we have not recognized any liability for uncertain tax positions, because of our full valuation allowance. We will recognize interest and penalties related to these positions, should such costs be assessed. As of December 31, 2013, we have not recognized interest and penalties. The recognition of unrecognized tax benefits would not affect our effective tax rate because the tax benefit would be offset by an increase in our valuation allowance.The following is a tabular reconciliation of the total amounts of unrecognized tax benefits for the year ended December 31, 2013.  2013  Beginning uncertain tax benefits $2,661Current year - increases  -Current year - decreases  -Settlements  -Expired statuses  -Ending uncertain tax benefits $2,661                                                                                                                                                                                                                                                                                                                                                                   |

| X                                                                                                                                                               |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_IncomeTaxDisclosureAbstract**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319
+ Details**Name:**us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319
+ Details**Name:**us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Tabular disclosure of the change in unrecognized tax benefits.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=32707879&loc=d3e36027-109320Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319
+ Details**Name:**us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock**Namespace Prefix:**us-gaap_**Data Type:**nonnum:textBlockItemType**Balance Type:**na**Period Type:**duration |