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Balance Sheet Details (Tables) | 12 Months Ended
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Dec. 31, 2016
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, 2016 |  |  | December 31, 2015 |
|  | Amortized |  |  | Gross |  |  | Fair |  |  | Amortized |  |  | Gross |  |  | Fair |
|  | cost basis |  |  | unrealized loss |  |  | value |  |  | cost basis |  |  | unrealized loss |  |  | value |
Corporate bonds and notes |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Government securities/money market |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,080 |  |  |  | (2 | ) |  |  | 4,078 |
Total |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,080 |  |  | $ | (2 | ) |  | $ | 4,078 |
Summary of Equipment and Improvements | Equipment and improvements consist of the following (in thousands):
|  | December 31, |
|  | 2016 |  |  | 2015 |
Computer hardware, software, and equipment |  | $ | 14,617 |  |  | $ | 16,288 |
Leasehold improvements |  |  | 5,315 |  |  |  | 5,170 |
Office furniture and fixtures |  |  | 1,073 |  |  |  | 1,214 |
|  |  | 21,005 |  |  |  | 22,672 |
Less accumulated depreciation and amortization |  |  | (19,194 | ) |  |  | (20,180 | )
Equipment and improvements, net |  | $ | 1,811 |  |  | $ | 2,492 |
Schedule of Acquired Intangible Assets by Major Asset Class | The following table sets forth our acquired intangible assets by major asset class as of December 31, 2016 and December 31, 2015 (in thousands except for useful life data):
|  |  |  | December 31, 2016 |  |  | December 31, 2015 |
|  | Useful life |  |  |  |  |  | Accumulated |  |  | Net book value |  |  | Impairment |  |  | Net |  |  |  |  |  |  | Accumulated |  |  | Net |
|  | (years) |  | Gross |  |  | amortization |  |  | before impairment |  |  | charge |  |  | book value |  |  | Gross |  |  | amortization |  |  | book value |
Purchased technology |  | 5 -6 |  | $ | 265 |  |  | $ | (32 | ) |  | $ | 233 |  |  | $ | — |  |  | $ | 233 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Customer relationships |  | 3-6 |  |  | 999 |  |  |  | (147 | ) |  |  | 852 |  |  |  | (411 | ) |  |  | 441 |  |  |  | — |  |  |  | — |  |  |  | — |
Trademarks/trade names |  | 2 |  |  | 38 |  |  |  | (9 | ) |  |  | 29 |  |  |  | — |  |  |  | 29 |  |  |  | — |  |  |  | — |  |  |  | — |
Non-compete |  | 3 |  |  | 51 |  |  |  | (9 | ) |  |  | 42 |  |  |  | — |  |  |  | 42 |  |  |  | — |  |  |  | — |  |  |  | — |
Total |  |  |  | $ | 1,353 |  |  | $ | (197 | ) |  | $ | 1,156 |  |  | $ | (411 | ) |  | $ | 745 |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Future Amortization Expense Related to Intangible Assets | Future amortization expense related to intangible assets as of December 31, 2016 are as follows (in thousands):
Year Ending December 31, |  |  |  |
2017 |  |  | 259 |
2018 |  |  | 249 |
2019 |  |  | 143 |
2020 |  |  | 46 |
2021 |  |  | 40 |
Beyond |  |  | 8 |
Total |  | $ | 745 |
Summary of Accrued Short-term Liabilities | Accrued short-term liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2016 |  |  | 2015 |
Salaries and benefits |  | $ | 2,545 |  |  | $ | 2,723 |
Restructuring liabilities |  |  | 485 |  |  |  | 442 |
Pennsylvania grant liability |  |  | 65 |  |  |  | 1,000 |
Royalties and revenue sharing |  |  | 146 |  |  |  | 643 |
Income & other taxes payable |  |  | 56 |  |  |  | 205 |
Interest payable |  |  | 97 |  |  |  | — |
Marketing expenses, rebates, and other |  |  | 109 |  |  |  | 51 |
Total accrued short-term liabilities |  | $ | 3,503 |  |  | $ | 5,064 |
Deferred Rent and Other Long Term Liabilities | Deferred rent and other long-term liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2016 |  |  | 2015 |
Deferred rent |  | $ | 1,162 |  |  | $ | 1,402 |
Restructuring liabilities |  |  | 1,475 |  |  |  | 1,767 |
Pennsylvania grant liability |  |  | 267 |  |  |  | — |
Sublease deposits |  |  | 66 |  |  |  | 66 |
Total deferred rent and other long-term liabilities |  | $ | 2,970 |  |  | $ | 3,235 |

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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 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 2: 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=73527792&loc=d3e27337-111563 Reference 3: 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=73527792&loc=d3e27198-111563 Reference 4: 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 5: 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=73527792&loc=d3e27161-111563 Reference 6: 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=73527792&loc=d3e27357-111563 Reference 7: 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=73527792&loc=d3e27290-111563 + 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 + Details
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