CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 3,525	$ 2,503
Accounts receivable, net	11,331	10,585
Inventories	8,171	9,707
Other current assets	834	372
Total current assets	23,861	23,167
Fixed assets, net of accumulated depreciation of $18,991 and $18,336, respectively	2,237	2,241
Goodwill	2,621	2,621
Deferred tax assets	3,549	3,432
Intangible assets, net of accumulated amortization of $3,024, and $2,779, respectively	332	545
Other assets	36	36
Total noncurrent assets	8,775	8,875
Total assets	32,636	32,042
Current liabilities:
Accounts payable	3,009	4,894
Accrued liabilities	2,666	2,394
Income taxes payable	143	19
Deferred revenue	152	117
Total current liabilities	5,970	7,424
Deferred revenue, net of current portion	67	67
Deferred rent, net of current portion	269	178
Other liabilities	212	264
Total noncurrent liabilities	548	509
Total liabilities	6,518	7,933
Shareholders' equity:
Common stock, $0.01 par value, 20,000,000 shares authorized; 11,185,331 and 11,170,881 shares issued, respectively; 7,383,364 and 7,782,292 shares outstanding, respectively	112	112
Additional paid-in capital	30,377	29,701
Retained earnings	25,838	24,157
Treasury stock, 3,851,967 and 3,388,589 shares, at cost	(99)	(109)
Treasury stock, at cost, 3,801,967 and 3,388,589 shares, respectively	(30,110)	(29,752)
Total shareholders' equity	26,118	24,109
Total liabilities and shareholders' equity	$ 32,636	$ 32,042