Annual report pursuant to Section 13 and 15(d)

Income Taxes Income Tax Reconciliation (Details)

v3.7.0.1
Income Taxes Income Tax Reconciliation (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]                      
Federal statutory tax rate (percent)                 34.00% 34.00%  
Expected income tax expense (benefit)                 $ (3,885,000) $ (10,040,000) $ (9,828,000)
State income taxes, net of federal tax effect                 (789,000) (830,000) (347,000)
Changes in tax rate                 (162,000) 48,000 20,000
Federal R&D credit                 (17,000) (82,000) (88,000)
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount                 58,000 0 0
Change in valuation allowance                 4,566,000 9,906,000 2,957,000
Foreign tax                 (105,000) 80,000 690,000
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount                 (24,000) 0 0
Other, net                 106,000 79,000 32,000
Income tax expense (benefit) $ (119,000) $ (39,000) $ (90,000) $ (4,000) $ (357,000) $ (163,000) $ (146,000) $ (174,000) $ (252,000) $ (839,000) $ (6,564,000)