Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 288	$ 299
Preferred stock, par value	$ 0.000001	$ 0.000001
Preferred stock, shares authorized	25,000	25,000
Preferred stock, shares issued
Common stock, par value	$ 0.000001	$ 0.000001
Common stock, shares authorized	120,000	120,000
Common stock, shares issued	56,052	55,632
Common stock, shares outstanding	56,052	55,632