Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Expected tax expense (benefit)									$ (67,452)	$ (17,263)	$ (19,522)
State income taxes									(2,066)	1,214	(1,717)
Incentive stock options									83	(208)	66
Valuation allowance									20,329	496	0
Other, net									155	(119)	(61)
Income tax expense (benefit)	$ (23,861)	$ (6,682)	$ (2,586)	$ (4,450)	$ (20,198)	$ 9,927	$ (1,070)	$ 37	(37,579)	(11,304)	(19,846)
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Nondeductible items for tax purposes									2,135	957	(92)
Foreign currency translation gain (loss)									8,660	2,699	617
Domestic Country [Member]
Operating Loss Carryforwards [Line Items]
Nondeductible expenses for tax purposes									$ 577	$ 920	$ 863