CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 943	$ 625
Adjustments to reconcile net income to net cash provided by operating activities:
Share-based compensation expense	146	145
Depreciation and amortization	313	324
Deferred income tax provision	21	115
Foreign currency transaction (gains) losses	8	(2)
Changes in operating assets and liabilities:
Accounts receivable	1,282	(2,179)
Inventories	(254)	1,375
Other current and long term assets	(169)	(252)
Accounts payable	(1,324)	1,305
Accrued liabilities and other liabilities	(195)	(1,677)
Net cash provided by operating activities	771	(221)
Cash flows from investing activities:
Capital expenditures	(234)	(221)
Net cash used in investing activities	(234)	(221)
Cash flows from financing activities:
Payment of dividends on common stock	(587)	(623)
Purchases of common stock for treasury	0	(510)
Incremental tax benefits on stock options exercised	(18)	0
Net cash used in financing activities	(605)	(1,133)
Effect of exchange rate changes on cash and cash equivalents	(6)	(6)
Decrease in cash and cash equivalents	(74)	(1,581)
Cash and cash equivalents, beginning of period	2,503	4,473
Cash and cash equivalents, end of period	2,429	2,892
Supplemental schedule of non-cash investing activities:
Capital expenditures funded by accounts payable	$ 98	$ 66