Income Taxes - Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Book (loss) income at U.S. 35% statutory rate									$ 7,944	$ 2,981	$ (7,559)
State income and other taxes due, net of federal benefit									1,095	1,017	833
Foreign tax rate differential									(3,110)	(840)	(563)
Dividends and other foreign income									(2,922)	1,679	6,904
Change in valuation allowance									2,084	(4,885)	4,330
Tax rate changes									454	1,922	1,798
Tax credits and refunds									(449)	(185)	(427)
Goodwill									0	(2,292)	(2,512)
Change in unrecognized tax benefits and tax reserves									(136)	(89)	(6,004)
Provision to return adjustments									(251)	(209)	(571)
Non-deductible expenses									1,906	1,446	2,168
Statute expiration of tax attributes									(30)	2,764	0
Other, net									259	1,054	(1,959)
Settlement of Brazil tax assessment									23,236	0	0
Total provision (benefit)	$ (3,360)	$ 29,218	$ 2,329	$ 1,893	$ (4,692)	$ 3,063	$ 3,489	$ 2,503	$ 30,080	$ 4,363	$ (3,562)
U.S. statutory tax rate									(35.00%)	(35.00%)	(35.00%)