Commitments (Tables)

12 Months Ended

Dec. 31, 2014

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, 2014 (in thousands):

2015	$	8,050
2016	6,560
2017	4,360
2018	1,621
2019	577
2020 and thereafter	325
	$	21,493