Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2015

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, 2015, were as follows (in thousands):

	Minimum Rental Payment
2016	$	8,468
2017	6,452
2018	5,170
2019	4,161
2020	3,685
Thereafter	35,185
Total	$	63,121