Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details)

v3.10.0.1
Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]                      
Tax at federal statutory rate                 $ 36,400 $ 20,031 $ 2,786
State, net of federal benefit                 1,635 622 175
Contingent liabilities                 948 903 1,225
Stock-based compensation                 (8,131) (4,019) 263
Research and development credits                 (2,758) (2,821) (1,525)
Change in uncertain tax positions                 858 1,308 1,423
Rate change for changes in federal or state law                 178 32,429 25
Change in valuation allowance                 (4,225) (4,169) 6,283
Expired NOLs and credits                 3,054 0 0
Change in derivatives                 615 0 0
Other                 1,435 391 (328)
Income tax expense from continuing operations $ 37,674 $ 3,645 $ 2,242 $ 1,114 $ (14,307) $ 11,864 $ 22,419 $ 10,033 $ 30,009 $ 44,675 $ 10,327