CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows from Operating Activities
Net income	$ 2,507	$ 980
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property and equipment	2,336	1,886
Amortization of intangible assets	124	128
(Recovery) provision for bad debt	(70)	(322)
Deferred income taxes	76	(397)
Share based compensation expense	0	56
Gain on disposal of property and equipment	0	(9)
Equity loss in affiliate	28	0
Change in operating assets and liabilities:
Accounts receivable	(962)	4,049
Inventories	1,054	(4,026)
Prepaid expenses and other current assets	413	(467)
Other assets, non-current	(1,862)	447
Accounts payable	326	3,383
Accrued liabilities	(1,561)	(2,164)
Customer deposits and deferred revenue	2,108	1,731
Income taxes payable	(178)	85
Net cash provided by operating activities	4,339	5,360
Cash Flows from Investing Activities
Proceeds from sale of property and equipment	0	9
Purchase of licensing rights	0	(100)
Purchase of equity method investment	0	(451)
Capital expenditures	(593)	(1,798)
Net cash used in investing activities	(593)	(2,340)
Cash Flows from Financing Activities
Principal payments on long-term debt	(2,686)	(673)
Proceeds from exercise of stock options	139	35
Cash paid for exercise of stock appreciation right	(170)	0
Net cash used in financing activities	(2,717)	(638)
Effect of exchange rate changes on cash	(136)	192
Net increase in cash and cash equivalents	893	2,574
Cash and cash equivalents, beginning of period	14,064	10,604
Cash and cash equivalents, end of period	14,957	13,178
Supplemental disclosures of cash flow information:
Cash paid for interest	125	122
Cash paid for income taxes, net of refunds	10	637
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment acquired through accounts payable, accrued and non-current other liabilities	$ 142	$ 886