Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 4,402	$ 2,693
Trade accounts receivable (net of allowance for doubtful accounts of $39 and $44 at June 30, 2012 and December 31, 2011, respectively)	5,551	4,155
Inventories, net	11,255	12,148
Deferred tax assets	2,966	3,458
Prepaid expenses and other current assets	982	526
Total current assets	25,156	22,980
Property, plant and equipment, net	1,096	1,158
Deferred tax assets, net	4,712	4,712
Capitalized software, net	2,337	2,778
Other assets	201	219
Total assets	33,502	31,847
Current liabilities:
Accounts payable	2,162	1,756
Accrued compensation and related taxes	1,204	807
Accrued warranty expense	243	247
Accrued other expenses and other current liabilities	195	318
Note payable	53
Deferred revenue	558	385
Total current liabilities	4,415	3,513
Deferred revenue	133	265
Long-term debt
Total liabilities	4,548	3,778
Commitments and contingencies
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: 13,545,482 and 13,519,323 issued and outstanding shares at June 30, 2012 and December 31, 2011, respectively	8,127	8,111
Additional paid-in capital	24,594	24,570
Accumulated deficit	(3,767)	(4,612)
Total stockholders' equity	28,954	28,069
Total liabilities and stockholders' equity	$ 33,502	$ 31,847