CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 10,226	$ 13,684
Marketable securities	9,079	7,327
Accounts receivable, less allowances of $385 at March 31, 2022 and $355 at December 31, 2021	22,271	19,821
Inventories	30,048	27,602
Prepaid expenses	779	808
Other current assets	1,297	864
Total current assets	73,700	70,106
Marketable securities, long-term	18,918	17,281
Equipment and leasehold improvements, net	3,269	3,174
Intangible assets, net	351	375
Goodwill	1,366	1,366
Right-of-use assets (operating leases)	1,916	2,052
Deferred tax assets	3,746	3,668
Total assets	103,266	98,022
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	12,346	10,275
Advance customer payments	1,089	599
Accrued expenses	3,600	4,418
Current operating lease liabilities	878	864
Total current liabilities	17,913	16,156
Other liabilities	187	177
Long-term operating lease liabilities	2,152	2,369
Reserve for income taxes	214	214
Total liabilities	20,466	18,916
Commitments and contingencies
Stockholders’ equity:
Preferred stock, no par value, 5,000,000 shares authorized, none outstanding	0	0
Common stock, no par value, 25,000,000 shares authorized, 7,402,683 shares issued and outstanding at March 31, 2022 and 7,391,906 shares issued and outstanding at December 31, 2021	39,587	39,052
Accumulated other comprehensive loss	(1,942)	(1,510)
Retained earnings	45,155	41,564
Total stockholders’ equity	82,800	79,106
Total liabilities and stockholders’ equity	$ 103,266	$ 98,022