Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities:
Net earnings	$ 2,224	$ 1,497
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	2,010	1,811
Loss on disposition of fixed assets	26	122
Unrealized loss on interest rate swaps	5	0
Amortization of stock-based compensation expense	190	388
Amortization of deferred financing costs	28	17
Deferred taxes	(41)	(240)
Changes in Operating Assets and Liabilities:
Receivables, net	716	244
Prepaid expenses and other assets	(833)	703
Accounts payable	(539)	80
Accrued liabilities	245	(1,132)
Inventories	21	106
Other operating liabilities	1	2
Accrued payroll	(440)	(387)
Taxes payable	(350)	(634)
Net cash provided by operating activities	3,263	2,577
Cash Flows used in Investing Activities:
Purchases of property and equipment	(2,245)	(7,164)
Proceeds from disposition of assets	0	61
Net cash used in investing activities	(2,245)	(7,103)
Cash Flows (used in) provided by Financing Activities:
Proceeds from borrowings	0	7,707
Principal repayments	(1,183)	(975)
Payment of deferred financing costs	0	(1)
Proceeds from exercise of stock options	43	0
Net cash (used in) provided by financing activities	(1,140)	6,731
Effect of Exchange Rate Changes on Cash	688	(1,038)
Increase in Cash and Cash Equivalents	566	1,167
Cash and Cash Equivalents at Beginning of Period	29,366	24,741
Cash and Cash Equivalents at End of Period	29,932	25,908
Supplemental Disclosure of Cash Flow Information:
Interest paid	712	180
Income taxes paid	933	1,072
Non-Cash Investing Activities:
Purchase of property, plant and equipment on account	324	547
Conversion of CDR equity (note 3)	$ 0	$ 716