Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 7,945	$ 6,581
Trade accounts receivable (net of allowance for doubtful accounts of $84 and $39 in 2013 and 2012, respectively)	2,844	2,062
Inventories, net	11,575	13,345
Deferred tax assets	3,836	4,429
Prepaid expenses and other current assets	1,920	915
Total current assets	28,120	27,332
Property, plant and equipment, net	1,045	1,113
Deferred tax assets, net	3,072	2,978
Capitalized software, net	1,478	2,207
Other assets	308	330
Total assets	34,023	33,960
Current liabilities:
Accounts payable	950	1,132
Accrued compensation and related taxes	779	1,485
Accrued warranty expense	292	267
Accrued other expenses and other current liabilities	154	166
Note payable		18
Deferred revenue	281	627
Total current liabilities	2,456	3,695
Deferred revenue	147	81
Total liabilities	2,603	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: 13,588,804 and 13,545,482 issued and outstanding shares at December 31, 2013 and 2012, respectively	8,153	8,127
Additional paid-in capital	24,672	24,604
Accumulated deficit	(1,405)	(2,547)
Total stockholders' equity	31,420	30,184
Total liabilities and stockholders' equity	$ 34,023	$ 33,960