Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 5,804	$ 6,581
Trade accounts receivable (net of allowance for doubtful accounts of $39 at June 30, 2013 and December 31, 2012, respectively)	3,528	2,062
Inventories, net	12,873	13,345
Deferred tax assets	3,635	4,429
Prepaid expenses and other current assets	1,002	915
Total current assets	26,842	27,332
Property, plant and equipment, net	1,005	1,113
Deferred tax assets, net	3,487	2,978
Capitalized software, net	1,952	2,207
Other assets	313	330
Total assets	33,599	33,960
Current liabilities:
Accounts payable	938	1,132
Accrued compensation and related taxes	813	1,485
Accrued warranty expense	273	267
Accrued other expenses and other current liabilities	157	166
Note payable		18
Deferred revenue	470	627
Total current liabilities	2,651	3,695
Deferred revenue	95	81
Total liabilities	2,746	3,776
Stockholders' equity:
Preferred stock; $1.00 par value; 1,000,000 authorized shares none issued or outstanding.
Common stock; $.60 par value; 20,000,000 authorized shares: 13,580,471 and 13,545,482 issued and outstanding shares at June 30, 2013 and December 31, 2012, respectively	8,148	8,127
Additional paid-in capital	24,650	24,604
Accumulated deficit	(1,945)	(2,547)
Total stockholders' equity	30,853	30,184
Total liabilities and stockholders' equity	$ 33,599	$ 33,960