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Balance Sheet Details (Tables) | 12 Months Ended
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Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Available-for-Sale Securities Recorded at Fair Value with Unrealized Gains or Losses | Available-for-sale securities with contractual maturities of less than 12 months were as follows (in thousands):
|  | December 31, 2014 |  |  | December 31, 2013 |
|  | Amortized cost basis |  |  | Gross unrealized loss |  |  | Fair value |  |  | Amortized cost basis |  |  | Gross unrealized loss |  |  | Fair value |
Corporate bonds and notes |  | $ | 1,000 |  |  | $ | (1 | ) |  | $ | 999 |  |  | $ | 919 |  |  | $ | (1 | ) |  | $ | 918 |
Government securities/money market |  |  | 1,881 |  |  |  | — |  |  |  | 1,881 |  |  |  | 2,160 |  |  |  | — |  |  |  | 2,160 |
Total |  | $ | 2,881 |  |  | $ | (1 | ) |  | $ | 2,880 |  |  | $ | 3,079 |  |  | $ | (1 | ) |  | $ | 3,078 |
Summary of Equipment and Improvements | Equipment and improvements consist of the following (in thousands):
|  | December 31, |
|  | 2014 |  |  | 2013 |
Computer hardware, software, and equipment |  | $ | 16,143 |  |  | $ | 16,529 |
Leasehold improvements |  |  | 5,170 |  |  |  | 5,317 |
Office furniture and fixtures |  |  | 1,213 |  |  |  | 1,213 |
|  |  | 22,526 |  |  |  | 23,059 |
Less accumulated depreciation and amortization |  |  | (18,253 | ) |  |  | (16,036 | )
Equipment and improvements, net |  | $ | 4,273 |  |  | $ | 7,023 |
Summary of Accrued Liabilities | Accrued liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2014 |  |  | 2013 |
Salaries and benefits |  | $ | 2,779 |  |  | $ | 3,651 |
Restructuring |  |  | 912 |  |  |  | 1,978 |
Pennsylvania grant liability |  |  | 1,000 |  |  |  | 1,000 |
Royalties and revenue sharing |  |  | 835 |  |  |  | 803 |
Income taxes |  |  | 160 |  |  |  | 176 |
Marketing expenses, rebates and other |  |  | 66 |  |  |  | 126 |
Total accrued liabilities |  | $ | 5,752 |  |  | $ | 7,734 |
Deferred Rent and Other Long Term Liabilities | Deferred rent and other long term liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2014 |  |  | 2013 |
Deferred rent |  | $ | 1,643 |  |  | $ | 1,986 |
Restructuring - beyond one year |  |  | 1,977 |  |  |  | 1,394 |
Sublease deposits |  |  | 23 |  |  |  | — |
Deferred revenue - long term |  |  | — |  |  |  | 3 |
Total deferred rent and other long term liabilities |  | $ | 3,643 |  |  | $ | 3,383 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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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=d3e2868-110229 Reference 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=d3e13212-122682 Reference 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 + Details
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