Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 3,101	$ 7,340
Marketable securities	9,402	11,438
Accounts receivable, less allowance for doubtful accounts of $705 at December 31, 2013 and $775 at December 31, 2012	6,562	6,129
Inventories	11,331	12,533
Income tax refunds receivable		1,325
Other current assets	1,104	1,338
Deferred tax assets	77	100
Total current assets	31,577	40,203
Marketable securities, long-term	10,742	10,435
Equipment and leasehold improvements, net	1,272	1,719
Intangible and other assets, net	136	189
Goodwill	569	569
Other assets	194	142
Deferred tax assets	85	363
Total assets	44,575	53,620
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	2,630	2,476
Advance customer payments	552	563
Accrued expenses	2,241	1,840
Deferred tax liability		29
Total current liabilities	5,423	4,908
Deferred rent	352	408
Deferred warranty revenue	165	146
Deferred tax liability	6
Reserve for income taxes	150	686
Total liabilities	6,096	6,148
Commitments and contingencies
Stockholders' equity:
Preferred stock, no par value, 5,000,000 shares authorized, none outstanding
Common stock, no par value, 25,000,000 shares authorized, 6,496,805 shares issued and outstanding at December 31, 2013 and 6,969,772 shares issued and outstanding at December 31, 2012	28,968	31,410
Accumulated other comprehensive loss	(540)	(157)
Retained earnings	10,051	16,219
Total stockholders' equity	38,479	47,472
Total liabilities and stockholders' equity	$ 44,575	$ 53,620