Common Stock (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jul. 05, 2012	Feb. 21, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Shares of common stock, issued and sold		600,000,000	1,750,980
Common stock outstanding			28,987,013
Common Stock (Textual) [Abstract]
Common stock, shares authorized	200,000,000
Common stock issued and sold, price per share			$ 10.20
Gross proceeds in a private placement	$ 17.9
Options outstanding	38,134,900
RSUs	1,032,304
IPO [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Price per share		18.00
Aggregate of preferred stock converted into common stock		83,703,016
10 Dollar per share [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Repurchase and cancellation of common shares	100,000
11 Dollar per share [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Repurchase and cancellation of common shares	77,498
One lakh shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Price per share	$ 10.00
77498 Shares [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Price per share	$ 11.00