Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2012

Lease Obligations [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The approximate future minimum rental payments due under these agreements as of December 31, 2012, were as follows (in thousands):

	Minimum Rental Payment
2013	$	8,453
2014	9,290
2015	8,667
2016	7,462
2017	7,500
Thereafter	22,652
Total	$	64,024