|
Income Taxes Income Taxes (Tables)
|
12 Months Ended |
|
Dec. 31, 2014
|
| Income Tax Disclosure [Abstract] |
|
| Components of Income (Loss) before Provision (Benefit) for Income Tax, Domestic and Foreign |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31, |
|
2014 |
|
2013 |
|
2012 |
Domestic |
$ |
(9,631 |
) |
|
$ |
(12,770 |
) |
|
$ |
(11,918 |
) |
Foreign |
886 |
|
|
439 |
|
|
(993 |
) |
Loss before income taxes |
$ |
(8,745 |
) |
|
$ |
(12,331 |
) |
|
$ |
(12,911 |
) |
|
| Components of Income Tax Expense (Benefit) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31, |
|
2014 |
|
2013 |
|
2012 |
Current: |
|
|
|
|
|
Federal |
$ |
— |
|
|
$ |
— |
|
|
$ |
— |
|
State |
1 |
|
|
— |
|
|
— |
|
Foreign |
577 |
|
|
574 |
|
|
351 |
|
Total current |
578 |
|
|
574 |
|
|
351 |
|
Deferred: |
|
|
|
|
|
Federal |
(3,341 |
) |
|
(5,217 |
) |
|
(4,162 |
) |
State |
253 |
|
|
(1,174 |
) |
|
(2,062 |
) |
Foreign |
54 |
|
|
(166 |
) |
|
— |
|
Valuation allowance release due to acquisition |
(2,335 |
) |
|
— |
|
|
— |
|
Change in valuation allowance |
3,087 |
|
|
6,385 |
|
|
6,214 |
|
Total deferred |
(2,282 |
) |
|
(172 |
) |
|
(10 |
) |
Total income tax provision (benefit) |
$ |
(1,704 |
) |
|
$ |
402 |
|
|
$ |
341 |
|
|
| Effective Income Tax Rate Reconciliation |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31, |
|
2014 |
|
2013 |
|
2012 |
Benefit at statutory rate |
$ |
(2,973 |
) |
|
$ |
(4,191 |
) |
|
$ |
(4,390 |
) |
State income taxes (net of federal benefit) |
(391 |
) |
|
1 |
|
|
(1,247 |
) |
Research and development credits |
(66 |
) |
|
(3,630 |
) |
|
(858 |
) |
Foreign rate differential |
(31 |
) |
|
(80 |
) |
|
445 |
|
Stock compensation |
609 |
|
|
460 |
|
|
278 |
|
Foreign deemed dividend |
— |
|
|
835 |
|
|
— |
|
Estimated export compliance fines and penalties |
— |
|
|
— |
|
|
(255 |
) |
Uncertain tax positions |
304 |
|
|
266 |
|
|
199 |
|
Permanent and other |
92 |
|
|
356 |
|
|
(45 |
) |
Valuation allowance release due to acquisition |
(2,335 |
) |
|
— |
|
|
— |
|
Valuation allowance |
3,087 |
|
|
6,385 |
|
|
6,214 |
|
Total provision (benefit) for income taxes |
$ |
(1,704 |
) |
|
$ |
402 |
|
|
$ |
341 |
|
|
| Components of Deferred Tax Assets |
|
|
|
|
|
|
|
|
|
|
December 31, |
|
2014 |
|
2013 |
Deferred tax assets: |
|
|
|
Net operating loss carryforwards |
$ |
9,924 |
|
|
$ |
8,545 |
|
Research and development credits |
12,783 |
|
|
12,718 |
|
Accrued expenses and other |
1,044 |
|
|
476 |
|
Accrued compensation |
994 |
|
|
1,686 |
|
Stock-based compensation |
4,516 |
|
|
2,732 |
|
Depreciation and amortization |
250 |
|
|
2,637 |
|
|
29,511 |
|
|
28,794 |
|
Less valuation allowance |
(29,399 |
) |
|
(28,628 |
) |
Net deferred tax assets |
$ |
112 |
|
|
$ |
166 |
|
|
| Summary of Changes to Unrecognized Tax Benefits |
|
|
|
|
|
Balance as of December 31, 2011 |
$ |
3,020 |
|
Additions based on tax positions related to the current year |
725 |
|
Additions based on tax positions of prior year |
132 |
|
Decreases based on tax positions of prior year |
(127 |
) |
Balance as of December 31, 2012 |
3,750 |
|
Additions based on tax positions related to the current year |
1,689 |
|
Additions based on tax positions of prior years |
23 |
|
Balance as of December 31, 2013 |
5,462 |
|
Additions based on tax positions related to the current year |
3,158 |
|
Additions based on tax positions of prior years |
2,188 |
|
Balance as of December 31, 2014 |
$ |
10,808 |
|
|