ORGANIZATION - Summary of Capitalization upon IPO (Detail)			1 Months Ended
	Sep. 29, 2012	Dec. 31, 2011	Feb. 29, 2012 IPO [Member]	Feb. 07, 2012 IPO [Member]
Subsidiary or Equity Method Investee [Line Items]
Common stock issued and outstanding at December 31, 2011	45,654,000	27,072,000	44,824	27,072
Conversion of preferred stock into common stock prior to IPO				3,050
Rounding of partial shares held prior to stock split				(4)
Sale of common stock through IPO			22,059,091	14,706
Common stock issued and outstanding at IPO, February 7, 2012	45,654,000	27,072,000		44,824