Commitments (Tables)

6 Months Ended

Jun. 30, 2017

Commitments and Contingencies Disclosure [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 (in thousands) as of June 30, 2017:

Remaining 2017	$	3,320
2018	4,568
2019	2,376
2020	702
2021	349
2022 and thereafter	369
	$	11,684