CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 3,893	$ 19,457
Accounts receivable, net	11,991	7,593
Employee retention credit receivable	1,500	1,500
Inventories	10,907	7,711
Prepaid income taxes	188	137
Other current assets	794	738
Total current assets	29,273	37,136
Fixed assets, net of accumulated depreciation of $17,216 and $16,736, respectively	2,838	2,684
Right-of-use asset	2,937	2,553
Goodwill	2,621	2,621
Deferred tax assets	7,325	5,143
Intangible assets, net of accumulated amortization of $1,286 and $1,209, respectively	319	397
Other assets	230	400
Total noncurrent assets	16,270	13,798
Total assets	45,543	50,934
Current liabilities:
Accounts payable	5,017	4,308
Accrued liabilities	3,649	3,894
Lease liability	789	789
Deferred revenue	887	805
Total current liabilities	10,342	9,796
Deferred revenue, net of current portion	169	186
Lease liability, net of current portion	2,170	1,781
Other liabilities	190	187
Total noncurrent liabilities	2,529	2,154
Total liabilities	12,871	11,950
Shareholders' equity:
Common stock, $0.01 par value, 20,000,000 shares authorized; 13,954,850 and 13,917,731 shares issued, respectively; 9,910,008 and 9,872,889 shares outstanding, respectively	139	139
Additional paid-in capital	55,708	55,246
Retained earnings	8,842	15,566
Accumulated other comprehensive income, net of tax	93	143
Treasury stock, at cost, 4,044,842 shares	(32,110)	(32,110)
Total shareholders' equity	32,672	38,984
Total liabilities and shareholders' equity	$ 45,543	$ 50,934