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Consolidated Balance Sheets and Statements of Operations and Comprehensive Loss Components | 12 Months Ended
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Dec. 31, 2014
Consolidated Balance Sheets and Statements of Operations and Comprehensive Loss Components |
Consolidated Balance Sheets and Statements of Operations and Comprehensive Loss Components | Note 2: Consolidated Balance Sheets and Statements of Operations and Comprehensive Loss Components
|  | December 31, |
|  | 2014 |  | 2013 |
|  | (in thousands) |
Inventories: |  |  |  |  |  |  |
Work-in-process |  | $ | 651 |  | $ | 542 |
Finished goods |  |  | 230 |  |  | 25 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 881 |  | $ | 567 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Prepaid expenses and other: |  |  |  |  |  |  |
Interest receivable |  | $ | 160 |  | $ | 382 |
Prepaid insurance |  |  | 143 |  |  | 127 |
Prepaid expenses and other |  |  | 584 |  |  | 595 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 887 |  | $ | 1,104 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Property and equipment, net: |  |  |  |  |  |  |
Equipment, furniture and fixtures and leasehold improvements |  | $ | 4,255 |  | $ | 3,923 |
Acquired software |  |  | 750 |  |  | 686 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 5,005 |  |  | 4,609 |
Less: Accumulated depreciation and amortization |  |  | (4,151 | ) |  | (3,903 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 854 |  | $ | 706 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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Intangible assets, net: Identifiable intangible assets relating to business combinations and the patent license were (dollar amounts in thousands):
|  | December 31, 2014 |
|  | Life (years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |
Developed technology |  |  | 3-5 |  | $ | 9,240 |  | $ | 9,031 |  | $ | 209 |
Patent license |  |  | 7 |  |  | 780 |  |  | 334 |  |  | 446 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  |  |  |  | $ | 10,020 |  | $ | 9,365 |  | $ | 655 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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|  | December 31, 2013 |
|  | Life (years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |
Developed technology |  |  | 3-5 |  | $ | 9,240 |  | $ | 8,142 |  | $ | 1,098 |
Patent license |  |  | 7 |  |  | 780 |  |  | 223 |  |  | 557 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  |  |  |  | $ | 10,020 |  | $ | 8,365 |  | $ | 1,655 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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Amortization expense has been included in research and development expense in the consolidated statements of operations and comprehensive loss. The estimated aggregate amortization expense to be recognized in future years is approximately $0.3 million for 2015 and $0.1 million annually for 2016 through 2018.
|  | December 31, |
|  | 2014 |  | 2013 |
|  | (in thousands) |
Accrued expenses and other: |  |  |  |  |  |  |
Accrued wages and employee benefits |  | $ | 1,026 |  | $ | 818 |
Employee stock purchase plan withholdings |  |  | 357 |  |  | 286 |
IC development wafer costs |  |  | 203 |  |  | — |
Professional fees |  |  | 123 |  |  | 61 |
Deferred revenue |  |  | 4 |  |  | 170 |
Other |  |  | 637 |  |  | 744 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 2,350 |  | $ | 2,079 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
As of December 31, 2014 and 2013, the amounts in long-term liabilities primarily included deferred rent. Other income, net:
|  | 2014 |  | 2013 |  | 2012 |
|  | (in thousands) |
Interest income |  | $ | 155 |  | $ | 174 |  | $ | 171 |
Other income (expense), net |  |  | (12 | ) |  | 35 |  |  | (16 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | 143 |  | $ | 209 |  | $ | 155 |
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