CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 5,665	$ 5,836
Marketable securities	8,549	8,295
Accounts receivable, less allowances of $365 at September 30, 2020 and $322 at December 31, 2019	18,167	16,059
Inventories	21,285	15,580
Prepaid expenses	685	559
Other current assets	1,683	1,020
Total current assets	56,034	47,349
Marketable securities, long-term	13,703	12,168
Equipment and leasehold improvements, net	3,237	3,341
Intangible assets, net	286	310
Goodwill	1,366	1,366
Right-of-use assets (operating leases)	2,710	2,111
Trade notes receivable, long-term	532	962
Deferred tax assets	4,658	4,992
Total assets	82,526	72,599
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	10,051	7,023
Advance customer payments	758	499
Accrued expenses	3,685	2,572
Current operating lease liabilities	769	688
Total current liabilities	15,263	10,782
Other liabilities	150	202
Long-term operating lease liabilities	3,424	3,141
Reserve for income taxes	150	150
Total liabilities	18,987	14,275
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, 7,254,684 shares issued and outstanding at September 30, 2020 and 7,154,591 shares issued and outstanding at December 31, 2019	37,648	36,659
Accumulated other comprehensive loss	(1,456)	(1,406)
Retained earnings	27,347	23,071
Total stockholders’ equity	63,539	58,324
Total liabilities and stockholders’ equity	$ 82,526	$ 72,599