CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 9,567	$ 8,399
Marketable securities	7,249	8,121
Accounts receivable, less allowances of $412 at June 30, 2021 and $302 at December 31, 2020	22,011	14,735
Inventories	23,266	20,271
Prepaid expenses	686	686
Other current assets	1,044	890
Total current assets	63,823	53,102
Marketable securities, long-term	15,230	14,052
Equipment and leasehold improvements, net	3,295	3,235
Intangible assets, net	383	325
Goodwill	1,366	1,366
Right-of-use assets (operating leases)	2,334	2,621
Trade notes receivable, long-term	271	418
Deferred tax assets	4,233	4,597
Total assets	90,935	79,716
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	11,101	5,118
Advance customer payments	954	823
Accrued expenses	4,165	3,893
Current operating lease liabilities	841	819
Total current liabilities	17,061	10,653
Other liabilities	147	134
Long-term operating lease liabilities	2,813	3,244
Reserve for income taxes	323	157
Total liabilities	20,344	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, 7,308,001 shares issued and outstanding at June 30, 2021 and 7,294,617 shares issued and outstanding at December 31, 2020	38,555	37,817
Accumulated other comprehensive loss	(1,327)	(1,102)
Retained earnings	33,363	28,813
Total stockholders’ equity	70,591	65,528
Total liabilities and stockholders’ equity	$ 90,935	$ 79,716