Income Taxes (Effective Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effective Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Federal income tax rate	35.00%	35.00%	35.00%
State income tax rate, net of federal benefit	0.70%	(30.40%)	(0.60%)
Effects of rates differences	4.90%	(62.20%)	(47.90%)
Non-deductible/Non-taxable items	2.90%	115.80%	3.40%
Change in valuation allowance	(14.50%)	(62.80%)	35.60%
U.S. tax on foreign earnings	(43.90%)	(77.40%)	38.20%
Uncertain tax positions	5.30%	294.40%	6.80%
Audit settlements	(1.60%)	(157.30%)	5.10%
Non-deductible write-off of intercompany debt			1.90%
Non-deductible impairment			3.50%
Write-off of income tax receivable		(18.40%)
Other	(0.10%)	5.70%	1.60%
Effective income tax rate	(11.30%)	42.40%	82.60%
Federal income tax rate, Amount	$ (26,160)	$ (2,992)	$ 20,781
State income tax rate, net of federal benefit, Amount	(543)	2,598	(373)
Effects of rates differences, Amount	(3,678)	5,317	(28,671)
Non-deductible/Non-taxable items	(2,181)	(9,904)	2,231
Change in valuation allowance, Amount	10,892	5,370	21,370
U.S. tax on foreign earnings, Amount	32,879	6,620	22,877
Uncertain tax positions, Amount	(3,952)	(25,172)	4,091
Audit settlements, Amount	1,167	13,448	3,035
Non-deductible write off of intercompany debt, Amount			1,114
Non-deductible impairment, Amount			2,118
Write-off of income tax receivable, Amount		1,577
Other, Amount	28	(485)	966
Total income tax expense (benefit)	$ 8,452	$ (3,623)	$ 49,539