Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets [Abstract]
Receivables, allowance for doubtful accounts and sales returns	$ 300	$ 286
Property and equipment, accumulated depreciation and amortization	$ 11,734	$ 10,471
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	250,000	250,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	29,750,000	29,750,000
Common stock, shares issued	9,299,519	9,479,272
Common stock, shares outstanding	9,299,519	9,479,272