Annual report pursuant to Section 13 and 15(d)

Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details)

v3.7.0.1
Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]    
Deferred tax assets, Net operating loss carryforwards $ 61,279 $ 56,679
Deferred tax assets:, Depreciation 474 37
Deferred tax assets:, Federal R&D credits 2,222 2,222
Deferred tax assets:, Other 7,107 6,308
Total deferred tax assets 71,082 65,246
Deferred tax liabilities, Amortization of intangibles (697) (807)
Total deferred tax liabilities (697) (807)
Net deferred tax asset 70,385 64,439
Less valuation allowance (70,519) (64,573)
Net deferred tax liabilities $ (134) $ (134)