Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 13,684	$ 8,399
Marketable securities	7,327	8,121
Accounts receivable, less allowance for doubtful accounts of $355 at December 31, 2021 and $302 at December 31, 2020	19,821	14,735
Inventories	27,602	20,271
Prepaid expenses	808	686
Other current assets	864	890
Total current assets	70,106	53,102
Marketable securities, long-term	17,281	14,052
Equipment and leasehold improvements, net	3,174	3,235
Intangibles, net	375	325
Goodwill	1,366	1,366
Right-of-use assets (operating leases)	2,052	2,621
Trade notes receivable, long-term	0	418
Deferred tax assets	3,668	4,597
Total assets	98,022	79,716
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	10,275	5,118
Advance customer payments	599	823
Accrued expenses	4,418	3,893
Current operating lease liabilities	864	819
Total current liabilities	16,156	10,653
Other liabilities	177	134
Long-term operating lease liabilities	2,369	3,244
Reserve for income taxes	214	157
Total liabilities	18,916	14,188
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, 7,391,906 shares issued and outstanding at December 31, 2021 and 7,294,617 shares issued and outstanding at December 31, 2020	39,052	37,817
Accumulated other comprehensive loss	(1,510)	(1,102)
Retained earnings	41,564	28,813
Total stockholders’ equity	79,106	65,528
Total liabilities and stockholders’ equity	$ 98,022	$ 79,716