Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 10,906	$ 7,945
Trade accounts receivable (net of allowance for doubtful accounts of $122 and $84 at September 30, 2014 and December 31, 2013, respectively)	4,547	2,844
Inventories, net	11,684	11,575
Deferred tax assets	2,862	3,836
Prepaid expenses and other current assets	2,128	1,920
Total current assets	32,127	28,120
Property, plant and equipment, net	1,189	1,045
Deferred tax assets, net	3,165	3,072
Capitalized software, net	887	1,478
Other assets	271	308
Total assets	37,639	34,023
Current liabilities:
Accounts payable	1,848	950
Note payable	5	0
Accrued compensation and related taxes	1,306	779
Accrued warranty expense	352	292
Accrued other expenses and other current liabilities	173	154
Deferred revenue	291	281
Total current liabilities	3,975	2,456
Deferred revenue	244	147
Note payable	18	0
Total liabilities	4,237	2,603
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:13,665,087 and 13,588,804 issued and outstanding shares at September 30, 2014 and December 31, 2013, respectively	8,199	8,153
Additional paid-in capital	24,806	24,672
Accumulated earnings (deficit)	397	(1,405)
Total stockholders' equity	33,402	31,420
Total liabilities and stockholders' equity	$ 37,639	$ 34,023