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Consolidated Balance Sheets and Statements of Operations and Comprehensive Income (Loss) Components (Tables) | 12 Months Ended
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Dec. 31, 2013
Consolidated Balance Sheets and Statements of Operations and Comprehensive Income (Loss) Components |
Schedule of prepaid expenses and other current assets and property and equipment |
|  | December 31, |
--- | --- | --- | ---
|  | 2013 |  | 2012 |
|  | (in thousands) |
Prepaid expenses and other current assets: |  |  |  |  |  |  |
Inventory |  | $ | 567 |  | $ | 252 |
Interest receivable |  |  | 382 |  |  | 263 |
Prepaid expenses and other assets |  |  | 722 |  |  | 847 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 1,671 |  | $ | 1,362 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Property and equipment: |  |  |  |  |  |  |
Equipment, furniture and fixtures and leasehold improvements |  | $ | 3,923 |  | $ | 4,135 |
Acquired software |  |  | 686 |  |  | 651 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 4,609 |  |  | 4,786 |
Less: Accumulated depreciation and amortization |  |  | (3,903 | ) |  | (3,548 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 706 |  | $ | 1,238 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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Schedule of accrued expenses and other liabilities |
|  | December 31, |
--- | --- | --- | ---
|  | 2013 |  | 2012 |
Accrued expenses and other liabilities: |  |  |  |  |  |  |
Accrued wages and employee benefits |  | $ | 818 |  | $ | 881 |
Employee stock purchase plan withholdings |  |  | 286 |  |  | 292 |
Professional fees |  |  | 61 |  |  | 503 |
Other |  |  | 744 |  |  | 2,271 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 1,909 |  | $ | 3,947 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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Schedule of other income, net |
|  | 2013 |  | 2012 |  | 2011 |
--- | --- | --- | --- | --- | --- | --- | ---
|  | (in thousands) |
Interest income |  | $ | 174 |  | $ | 171 |  | $ | 143 |
Other income (expense), net |  |  | 35 |  |  | (16 | ) |  | 63 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 209 |  | $ | 155 |  | $ | 206 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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