Provision for Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current
Federal	$ 6,180,000	$ 9,039,000	$ 3,338,000
State and local	1,739,000	526,000	462,000
Foreign	8,632,000	4,056,000	12,000
Provision for income taxes, current	16,551,000	13,621,000	3,812,000
Deferred
Federal	5,950,000	(47,000)	13,018,000
State and local	(248,000)	178,000	597,000
Foreign	(767,000)	312,000	(261,000)
Provision for income taxes, deferred	4,935,000	443,000	13,354,000
Provision for income taxes	21,486,000	14,064,000	17,166,000
Reversal of indirect benefits on uncertain tax benefits lapsed due to statute of limitations			5,500,000
Income generated by operations outside the United States	29,300,000	10,400,000	11,800,000
Income Taxes
Undistributed earnings of non-U.S. subsidiaries	$ 77,400,000
Differences between the U.S. federal statutory tax rate and the effective income tax rate
U.S. federal statutory rate (as a percent)	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit (as a percent)	0.80%	2.00%	2.10%
Tax rate differential on foreign income (as a percent)	(1.50%)	(2.00%)	(1.00%)
Nonrecurring adjustments related to sale of foreign subsidiary (as percent)	(2.20%)	2.80%
Permanent tax differences (as a percent)	(1.40%)	(1.90%)	(1.00%)
Valuation allowance (as a percent)	1.50%	1.50%
Tax statute expiration (as a percent)	(0.60%)	(0.80%)	(5.80%)
Change in uncertain tax positions (as a percent)	0.30%	0.60%	0.60%
Other - net (as a percent)	0.10%	0.50%	0.50%
Effective income tax rate (as a percent)	32.00%	37.70%	30.40%