Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Information
Total revenues	$ 218,011	$ 219,541
Amortization of Intangible Assets	0	0
Restructuring (charges) credit	102	(349)
OPERATING INCOME FROM CONTINUING OPERATIONS	7,033	4,786
Operating segment | International
Segment Information
Total revenues	114,981	112,675
Earnings before interest, taxes, amortization, and restructuring	6,824	4,951
Operating segment | North America [Member]
Segment Information
Total revenues	103,478	107,169
Earnings before interest, taxes, amortization, and restructuring	8,472	8,096
Operating segment | Other
Segment Information
Total revenues	654	847
Earnings before interest, taxes, amortization, and restructuring	137	36
Inter-segment
Segment Information
Total revenues	(1,102)	(1,150)
Corporate expenses
Segment Information
Earnings before interest, taxes, amortization, and restructuring	(8,502)	(7,948)
Segment reconciling items
Segment Information
Earnings before interest, taxes, amortization, and restructuring	6,931	5,135
Amortization of Intangible Assets	0	0
Restructuring (charges) credit	$ 102	$ (349)