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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2014
Income Tax Disclosure [Abstract] |
Summary of Income Taxes |
Summary of Income (Loss) before Taxes | Income (loss) before taxes for the years ended December 31, 2014, 2013 and 2012 is comprised of the following (in thousands):
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
Domestic | $ | (39,513 | ) |  | $ | (44,142 | ) |  | $ | (88,945 | )
Foreign | 408 |  |  | 812 |  |  | 290 |
Loss before taxes | $ | (39,105 | ) |  | $ | (43,330 | ) |  | $ | (88,655 | )
Summary of Provision (Benefit) for Income Taxes | The provision (benefit) for income taxes for the years ended December 31, 2014, 2013 and 2012 is comprised of the following (in thousands):
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
Current: |  |  |  |  |
Federal | $ | — |  |  | $ | (248 | ) |  | $ | — |
State | 21 |  |  | 33 |  |  | 29 |
Foreign | 16 |  |  | (229 | ) |  | 74 |
Total Current | 37 |  |  | (444 | ) |  | 103 |
Deferred: |  |  |  |  |
Federal | — |  |  | 53 |  |  | 14 |
State | — |  |  | — |  |  | — |
Foreign | 87 |  |  | 474 |  |  | 494 |
Total Deferred | 87 |  |  | 527 |  |  | 508 |
Provision or income taxes | $ | 124 |  |  | $ | 83 |  |  | $ | 611 |
Summary of Net Deferred Tax Assets | The Company’s net deferred tax assets consist of the following (in thousands):
| December 31,
| 2014 |  | 2013
Deferred tax assets: |  |  |
Accrued expenses | $ | 4,566 |  |  | $ | 11,292 |
Inventory obsolescence provision | 2,352 |  |  | 3,539 |
Depreciation and amortization | 4,137 |  |  | 4,136 |
Deferred rent | 555 |  |  | 559 |
Net operating loss and tax credit carryforwards | 76,346 |  |  | 55,010 |
Stock-based compensation | 1,910 |  |  | 4,518 |
Unrecognized tax benefits | 1,296 |  |  | 1,190 |
Deferred tax assets | 91,162 |  |  | 80,244 |
Deferred tax liabilities: |  |  |
Amortization of acquired intangibles | (388 | ) |  | (699 | )
Net deferred tax assets | 90,774 |  |  | 79,545 |
Valuation allowance | (90,774 | ) |  | (79,458 | )
Net deferred tax assets | $ | — |  |  | $ | 87 |
Summary of Provision (Benefit) for Income Taxes Reconciles to Amount Computed by Applying Statutory Federal Income Tax Rate | The provision (benefit) for income taxes reconciles to the amount computed by applying the statutory federal income tax rate of 34% in 2014, 2013 and 2012 to income (loss) before provision for income taxes as follows (in thousands):
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
Federal tax benefit, at statutory rate | $ | (13,447 | ) |  | $ | (14,732 | ) |  | $ | (30,142 | )
State benefit, net of federal benefit | (1,054 | ) |  | (922 | ) |  | (757 | )
Change in valuation allowance | 11,316 |  |  | 15,577 |  |  | 27,486 |
Change in fair value of warrant | 1,203 |  |  | — |  |  | — |
Beneficial conversion feature | 163 |  |  | — |  |  | — |
Research and development credits | 3 |  |  | (1,084 | ) |  | (856 | )
Share-based compensation | 2,402 |  |  | 2,433 |  |  | 1,616 |
Uncertain tax positions | (62 | ) |  | (307 | ) |  | (46 | )
Goodwill impairment | — |  |  | — |  |  | 3,700 |
Change in state apportionment | (347 | ) |  | (767 | ) |  | — |
Other | (53 | ) |  | (115 | ) |  | (390 | )
| $ | 124 |  |  | $ | 83 |  |  | $ | 611 |
Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits | A reconciliation of the beginning and ending amounts of unrecognized tax benefits is as follows (in thousands):
| Amount
Unrecognized tax benefits balance at December 31, 2012 | $ | 33,220 |
Increases related to current and prior year tax positions | 2,653 |
Settlements and lapses in statutes of limitations | (373 | )
Unrecognized tax benefits balance at December 31, 2013 | 35,500 |
Increases related to current and prior year tax positions | 204 |
Settlements and lapses in statutes of limitations | (61 | )
Unrecognized tax benefits balance at December 31, 2014 | $ | 35,643 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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