Lease commitments (Tables)

12 Months Ended

Dec. 31, 2016

Leases [Abstract]

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

At December 31, 2016, the minimum total rental commitment under such non-cancelable operating leases was as follows (in thousands):

2017	$	405
2018		283
2019		213
2020		208
2021		64
	$	1,173