| **Fixed Assets (Tables)**   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| **Fixed Assets [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Fixed Assets                | 6. Fixed AssetsFixed assets as of December 31, 2013 and 2012 consisted of the following:  2013  2012 Computer equipment $2,234  $2,166 Machinery and equipment  7,091   8,031 Furniture and fixtures  170   133 Leasehold improvements  5,020   5,327 Other  16   12    14,531   15,669 Less, accumulated depreciation and amortization  (12,118)  (12,270)Total $2,413  $3,399  At December 31, 2013 and 2012, $2.0 million and $2.6 million, respectively, of leasehold improvements, net were being amortized over periods of 8.5-10.8 years, under leases with terms through December 31, 2020. |

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| - Definition
Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph b -Article 5
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