Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2011

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, 2011, were as follows (in thousands):

	Minimum Rental Payment
2012	$	7,747
2013	6,908
2014	6,236
2015	4,118
2016	4,204
Thereafter	8,677
Total	$	37,890