Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Interest paid	$ 1,360	$ 1,376
Income taxes paid	750	1,546
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in equity	76	78
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in equity	5	4
Common Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued	5
Additional Paid-in Capital [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in equity	$ 71	$ 74