Debt (Tables)

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consisted of the following:

	March 31,		December 31,
	2013		2012
Credit agreement	$	68,578	$	57,814
Senior notes	35,000		35,000
	$	103,578	$	92,814