Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of income tax expense:
Computed income tax expense at statutory federal income tax rate of 35%	$ 9,381	$ 4,613	$ 896
State income taxes, net of federal provision	470	(100)	(172)
Foreign tax rate differentials	(2,031)	(1,679)	(1,560)
U.S. tax on foreign earnings U.S. tax on foreign earnings (net of foreign tax credits)	(595)	1,105	629
Tax resolutions, net		(103)	(514)
Change in enacted tax law			1,279
Change in valuation allowance	14,220	(55)	249
Proceeds from life insurance	(472)		(460)
Other, net	(130)	107	1,395
Income tax expense	$ 20,843	$ 3,888	$ 1,742
Computed income tax expense at statutory federal income tax rate of 35%, tax rate	35.00%	35.00%	35.00%
State income taxes, net of federal provision, tax rate	1.80%	(0.80%)	(6.70%)
Foreign tax differentials rate	(7.60%)	(12.70%)	(61.00%)
U.S. tax on foreign earnings rate	(2.20%)	8.40%	24.60%
Tax resolutions, net tax rate	0.00%	(0.80%)	(20.10%)
Change in enacted tax law, tax rate	0.00%	0.00%	50.00%
Change in valuation allowance, tax rate	53.10%	(0.40%)	9.70%
Proceeds from life insurance rate	(1.80%)	0.00%	(18.00%)
Other, net, tax rate	(0.50%)	0.80%	54.60%
Income tax expense	77.80%	29.50%	68.10%