Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
ASSETS
Cash and cash equivalents	$ 2,384	$ 3,101
Marketable securities	6,047	9,402
Accounts receivable, less allowance for doubtful accounts of $622 at September 30, 2014 and $705 at December 31, 2013	9,953	6,562
Inventories	12,956	11,331
Other current assets	1,566	1,104
Deferred tax assets	77	77
Total current assets	32,983	31,577
Marketable securities, long-term	9,499	10,742
Equipment and leasehold improvements, net	2,937	1,272
Intangible and other assets, net	655	136
Goodwill	1,366	569
Other assets	193	194
Deferred tax assets	55	85
Total assets	47,688	44,575
LIABILITIES AND STOCKHOLDERS’ EQUITY
Accounts payable	5,808	2,630
Advance customer payments	590	552
Accrued expenses	2,855	2,241
Total current liabilities	9,253	5,423
Deferred rent	318	352
Deferred warranty revenue	45	165
Deferred tax liability	16	6
Reserve for income taxes	150	150
Total liabilities	9,782	6,096
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, 6,635,805 shares issued and outstanding at September 30, 2014 and 6,496,805 shares issued and outstanding at December 31, 2013	30,087	28,968
Accumulated other comprehensive loss	(660)	(540)
Retained earnings	8,479	10,051
Total stockholders’ equity	37,906	38,479
Total liabilities and stockholders’ equity	$ 47,688	$ 44,575