Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 6,581	$ 2,693
Trade accounts receivable (net of allowance for doubtful accounts of $39 and $44 in 2012 and 2011, respectively)	2,062	4,155
Inventories, net	13,345	12,148
Deferred tax assets	4,429	3,458
Prepaid expenses and other current assets	915	526
Total current assets	27,332	22,980
Property, plant and equipment, net	1,113	1,158
Deferred tax assets, net	2,978	4,712
Capitalized software, net	2,207	2,778
Other assets	330	219
Total assets	33,960	31,847
Current liabilities:
Accounts payable	1,132	1,756
Accrued compensation and related taxes	1,485	807
Accrued warranty expense	267	247
Accrued other expenses and other current liabilities	166	318
Note payable	18	0
Deferred revenue	627	385
Total current liabilities	3,695	3,513
Deferred revenue	81	265
Total liabilities	3,776	3,778
Commitments and contingencies
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: 13,545,482 and 13,519,323 issued and outstanding shares at December 31, 2012 and 2011, respectively	8,127	8,111
Additional paid-in capital	24,604	24,570
Accumulated deficit	(2,547)	(4,612)
Total stockholders' equity	30,184	28,069
Total liabilities and stockholders' equity	$ 33,960	$ 31,847