CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 6,644	$ 7,946
Accounts receivable, net	17,022	13,927
Employee retention credit receivable	0	1,500
Inventories	12,390	12,028
Other current assets	910	724
Total current assets	36,966	36,125
Fixed assets, net of accumulated depreciation of $17,869 and $17,656, respectively	2,882	2,781
Right-of-use asset, net	2,274	2,488
Goodwill	2,621	2,621
Deferred tax assets	6,828	7,327
Intangible assets, net of accumulated amortization of $1,402 and $1,364, respectively	204	242
Other assets	225	248
Total noncurrent assets	15,034	15,707
Total assets	52,000	51,832
Current liabilities:
Current portion of revolving loan payable	2,250	2,250
Accounts payable	4,574	7,395
Accrued liabilities	4,061	4,077
Lease liability	891	875
Deferred revenue	1,205	1,329
Total current liabilities	12,981	15,926
Deferred revenue, net of current portion	148	143
Lease liability, net of current portion	1,449	1,683
Other liabilities	226	218
Total noncurrent liabilities	1,823	2,044
Total liabilities	14,804	17,970
Commitments and contingencies (see Notes 5 and 7)
Shareholders' equity:
Common stock, $0.01 par value, 20,000,000 shares authorized; 13,998,535 and 13,956,725 shares issued, respectively; 9,953,693 and 9,911,883 shares outstanding, respectively	140	139
Additional paid-in capital	56,474	56,282
Retained earnings	12,769	9,630
Accumulated other comprehensive loss, net of tax	(77)	(79)
Treasury stock, at cost (4,044,842 shares)	(32,110)	(32,110)
Total shareholders' equity	37,196	33,862
Total liabilities and shareholders' equity	$ 52,000	$ 51,832