Commitments (Tables)

12 Months Ended

Dec. 31, 2015

Other Commitments [Abstract]

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

The following table presents our annual minimum rental payments under non-cancelable operating leases that have lease terms of one year or more as of December 31, 2015 (in thousands):

2016	$	7,912
2017	6,040
2018	3,274
2019	1,180
2020	180
2021 and thereafter	479
	$	19,065