Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 98	$ 91
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares Authorized	10,000,000	10,000,000
Preferred stock, shares Issued
Preferred stock, shares Outstanding
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares Authorized	250,000,000	250,000,000
Common stock, shares Issued	37,061,266	36,341,383
Treasury stock, shares	103,975	98,527