Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013		Dec. 31, 2012
Preferred stock, par value	$ 0.0025	[1]	$ 0.0025	[2]
Preferred stock, shares authorized	10,000,000	[1]	10,000,000	[2]
Preferred stock, shares issued	0	[1]	0	[2]
Preferred stock, shares outstanding	0	[1]	0	[2]
Common stock, par value	$ 0.0025	[1]	$ 0.0025	[2]
Common stock, shares authorized	100,000,000	[1]	100,000,000	[2]
Common stock, shares issued	30,604,293	[1]	30,546,155	[2]
Common stock, shares outstanding	30,604,293	[1]	30,546,155	[2]

[1] Restated and Revised, see Notes 2 and 7

[2] Revised, see Note 2