CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and cash equivalents	$ 7,633	$ 6,944
Marketable securities	6,396	6,670
Accounts receivable, less allowance for doubtful accounts of $290 at September 30, 2018 and $473 at December 31, 2017	14,525	10,772
Inventories	13,935	14,393
Other current assets	2,314	1,593
Total current assets	44,803	40,372
Marketable securities, long-term	9,806	9,073
Equipment and leasehold improvements, net	2,326	2,307
Intangible assets, net	333	380
Goodwill	1,366	1,366
Other assets	201	261
Deferred tax assets	5,546	5,742
Total assets	64,381	59,501
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	5,380	4,294
Advance customer payments	1,240	393
Accrued expenses	2,656	2,285
Total current liabilities	9,276	6,972
Other liabilities	156	88
Reserve for income taxes	159	159
Total liabilities	9,591	7,219
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, 7,064,089 shares issued and outstanding at September 30, 2018 and 6,979,686 shares issued and outstanding at December 31, 2017	35,452	34,080
Accumulated other comprehensive loss	(1,733)	(1,409)
Retained earnings	21,071	19,611
Total stockholders’ equity	54,790	52,282
Total liabilities and stockholders’ equity	$ 64,381	$ 59,501