Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011		Dec. 31, 2010
Stockholders' equity:
Preferred stock, par value	$ 0.001		$ 0.001
Preferred stock, shares authorized	11,250,000		11,250,000
Preferred stock, shares issued	0		0
Common stock, par value	$ 0.004		$ 0.004
Common stock, shares authorized	112,500,000		112,500,000
Common stock, shares issued	24,653,493	[1]	24,758,480	[1]
Common stock, shares outstanding	24,653,493	[1]	24,758,480	[1]

[1] Reflects three-for-two stock split effective June 13, 2011.