v3.6.0.2
Income Taxes (Effective Income Tax Expense (Benefit) Rate) (Details)
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax [Line Items]      
Federal statutory tax expense (benefit) rate 35.00% 35.00% 35.00%
State tax expense (benefit), net of federal benefit 19.40% 5.10% 1.90%
Valuation allowances (25.00%) (46.00%) (35.80%)
Effective Income Tax Rate Reconciliation Change in Deferred Tax Assets, Valuation Allowance Due to Foreign Taxes (0.10%) (49.40%) 0.00%
Foreign taxes (0.60%) 3.10% 1.20%
Change in unrecognized tax benefits (0.10%) 1.20% (0.40%)
Effective Income Tax Rate Reconciliation Nondeductible Expense Disallowed Compensation 0.90% 3.10% 0.10%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Percent 2.20% 0.60% 0.10%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent 2.00% (0.50%) 0.00%
Permanent differences and other items 0.60% 0.00% 0.20%
Effective income tax expense (benefit) rate 34.30% (47.80%) 2.30%