Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data	Jun. 30, 2011	Dec. 31, 2010
Consolidated Balance Sheets
Accounts receivable, allowance	$ 669	$ 716
Fixed assets, accumulated depreciation and amortization	$ 15,601	$ 14,009
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, shares authorized	10,000	10,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value	$ 0.001	$ 0.001
Common Stock, shares authorized	2,000,000	2,000,000
Common Stock, shares issued	39,610	39,439
Treasury Stock, shares at cost	2,507	2,440