Annual report pursuant to Section 13 and 15(d)

Income Taxes Income Tax Expense (Benefit) (Details)

v3.8.0.1
Income Taxes Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount $ (11,899) $ 22,294 $ (14,588)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount 17 (13) 275
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount (8,153) (9,076) (2,083)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount 23,666 2,888 (62)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount (5,713) (5,756) 549
Income Tax Reconciliation Foreign Dividends 0 51 279
Income tax impact to provision due to transaction costs 553 749 1,329
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount 1,993 (1,204) 600
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount (5) (72) (144)
Current Foreign Tax Expense (Benefit) 1,784 1,092 942
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount 813 (802) 96
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount (1,368) 0 0
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount 25,205 0 0
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount 1,257 0 0
Valuation Allowance, Deferred Tax Asset, Release due to Acquisition, amount 0 0 (1,757)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount (51,177) (6,661) 14,931
Provision (benefit) for income taxes $ (24,811) $ 2,398 $ (575)