Income Taxes (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	$ 40,000
Operating Loss Carryforwards	208,000
Deferred Tax Assets, Valuation Allowance	41,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	39,000
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Compensation Cost, Amount	789
Second component of tax deductible goodwill, net of tax	1,609
Liability for Uncertain Tax Positions, Noncurrent	18,065
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	3,044
Deferred tax asset, Uncertain tax position	6,375
Unrecognized Tax Benefits, Interest on Income Taxes Expense	$ 1,968