| Income Taxes [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Taxes [Abstract] | |
Schedule of Income before Income Tax, Domestic and Foreign |
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31,
|
|
|
|
|
2016
|
|
2015
|
|
|
Domestic
|
|
$
|
(7,812)
|
|
$
|
(10,223)
|
|
|
Foreign
|
|
|
(1,625)
|
|
|
(1,185)
|
|
|
Loss before income taxes
|
|
$
|
(9,437)
|
|
$
|
(11,408)
|
|
|
|
|
|
|
|
|
|
|
|
Schedule of Components of Income Tax Expense |
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31,
|
|
|
|
|
2016
|
|
2015
|
|
|
Current:
|
|
|
|
|
|
|
|
|
Federal
|
|
$
|
-
|
|
$
|
4
|
|
|
State
|
|
|
(4)
|
|
|
(1)
|
|
|
Foreign
|
|
|
(44)
|
|
|
(32)
|
|
|
Total current
|
|
|
(48)
|
|
|
(29)
|
|
|
Deferred:
|
|
|
|
|
|
|
|
|
Federal
|
|
|
(1,422)
|
|
|
(3,871)
|
|
|
State
|
|
|
(336)
|
|
|
1,186
|
|
|
Foreign
|
|
|
318
|
|
|
461
|
|
|
Total deferred
|
|
|
(1,440)
|
|
|
(2,224)
|
|
|
Valuation allowance
|
|
|
1,440
|
|
|
2,224
|
|
|
Provision for income taxes
|
|
$
|
(48)
|
|
$
|
(29)
|
|
|
Schedule of Effective Income Tax Rate Reconciliation |
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31,
|
|
|
|
|
2016
|
|
2015
|
|
|
Expected income tax benefit
|
|
$
|
3,303
|
|
$
|
3,993
|
|
|
Expected state income taxes expense, net of federal tax benefit
|
|
|
216
|
|
|
(771)
|
|
|
Research and development credit
|
|
|
169
|
|
|
147
|
|
|
Foreign taxes and foreign loss not benefited
|
|
|
(925)
|
|
|
(904)
|
|
|
Change in valuation allowance
|
|
|
(1,440)
|
|
|
(2,224)
|
|
|
Stock-based compensation
|
|
|
(78)
|
|
|
(198)
|
|
|
True-ups
|
|
|
(51)
|
|
|
(155)
|
|
|
Unrealized tax benefits
|
|
|
(7)
|
|
|
154
|
|
|
Unrealized loss from foreign investments
|
|
|
(1,226)
|
|
|
-
|
|
|
Others
|
|
|
(9)
|
|
|
(71)
|
|
|
Provision for income taxes
|
|
$
|
(48)
|
|
$
|
(29)
|
|
|
|
|
|
|
|
|
|
|
|
Schedule of Deferred Tax Assets and Liabilities |
|
|
|
|
|
|
|
|
|
|
|
|
Years Ended December 31,
|
|
|
|
|
2016
|
|
2015
|
|
|
Deferred tax assets:
|
|
|
|
|
|
|
|
|
Depreciation and amortization
|
|
$
|
72
|
|
$
|
265
|
|
|
Accrued, allowance and others
|
|
|
3,166
|
|
|
3,085
|
|
|
Net operating losses
|
|
|
207,270
|
|
|
204,693
|
|
|
Tax credits
|
|
|
8,731
|
|
|
8,407
|
|
|
Unrealized losses on marketable securities
|
|
|
-
|
|
|
1,349
|
|
|
Total deferred tax assets
|
|
|
219,239
|
|
|
217,799
|
|
|
Less: valuation allowance
|
|
|
(219,239)
|
|
|
(217,799)
|
|
|
Net deferred tax assets
|
|
$
|
-
|
|
$
|
-
|
|
|
|
|
|
|
|
|
|
|
|
Summary of Income Tax Contingencies |
|
|
|
|
|
|
|
Balance at January 1, 2016
|
|
$
|
2,800
|
|
|
Additions based on tax provisions related to the current year
|
|
|
112
|
|
|
Additions for tax provisions of prior year
|
|
|
-
|
|
|
Lapse of the statute of limitation
|
|
|
(32)
|
|
|
Balance at December 31, 2016
|
|
$
|
2,880
|
|
|
|
|
|
|
|
|