Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 7,630	$ 6,581
Trade accounts receivable (net of allowance for doubtful accounts of $39 at September 30, 2013 and December 31, 2012, respectively)	3,783	2,062
Inventories, net	11,444	13,345
Deferred tax assets	3,372	4,429
Prepaid expenses and other current assets	1,371	915
Total current assets	27,600	27,332
Property, plant and equipment, net	1,018	1,113
Deferred tax assets, net	3,487	2,978
Capitalized software, net	1,731	2,207
Other assets	323	330
Total assets	34,159	33,960
Current liabilities:
Accounts payable	938	1,132
Accrued compensation and related taxes	874	1,485
Accrued warranty expense	281	267
Accrued other expenses and other current liabilities	200	166
Note payable	0	18
Deferred revenue	372	627
Total current liabilities	2,665	3,695
Deferred revenue	124	81
Total liabilities	2,789	3,776
Stockholders' equity:
Preferred stock; $1.00 par value; 1,000,000 authorized shares none issued or outstanding.	0	0
Common stock; $.60 par value; 20,000,000 authorized shares:13,580,471 and 13,545,482 issued and outstanding shares at September 30, 2013 and December 31, 2012, respectively	8,148	8,127
Additional paid-in capital	24,653	24,604
Accumulated deficit	(1,431)	(2,547)
Total stockholders' equity	31,370	30,184
Total liabilities and stockholders' equity	$ 34,159	$ 33,960