Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income before income taxes:
Domestic	$ 31,738	$ 27,827	$ 21,976
Foreign	6,750	7,975	6,415
Total income before income taxes	38,488	35,802	28,391
Current:
Federal	10,348	7,846	6,869
State and local	2,130	1,653	1,750
Foreign	2,539	2,899	1,765
Total current	15,017	12,398	10,384
Deferred:
Federal	226	856	310
State and local	159	236	48
Foreign	(670)	(376)	(211)
Total deferred	(285)	716	147
Total income tax expense	$ 14,732	$ 13,114	$ 10,531