Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 7,523	$ 5,492
Accounts receivable, net of allowance for doubtful accounts of $136 and $187, respectively	8,848	8,866
Inventories, net	11,500	11,901
Deferred tax asset, current	1,299	53
Other current assets	918	967
Total current assets	30,088	27,279
Property and equipment, net	4,732	5,486
Goodwill	1,048	999
Deferred tax asset, net of current portion	27,154	29,284
Total assets	63,022	63,048
Current liabilities:
Accounts payable	4,593	4,162
Accrued liabilities	4,114	3,608
Current portion of deferred revenue	2,182	1,811
Line of credit		3,079
Total current liabilities	10,889	12,660
Deferred revenue, net of current portion, and other	4,200	4,590
Total liabilities	15,089	17,250
Stockholders' equity:
Preferred stock, $.01 par value, 2,500,000 shares authorized; none issued or outstanding
Common stock, $.01 par value, 7,500,000 shares authorized; none issued and outstanding
Public common stock, $.01 par value, 7,500,000 shares authorized; 5,231,245 and 5,239,277 shares issued and outstanding, respectively	52	52
Additional paid-in capital	217,603	217,240
Accumulated other comprehensive income	394	284
Accumulated deficit	(170,116)	(171,778)
Total stockholders' equity	47,933	45,798
Total liabilities and stockholders' equity	$ 63,022	$ 63,048