Stockholders' Equity - Activities Under Equity Plan (Detail)			22 Months Ended	3 Months Ended	22 Months Ended
	Mar. 31, 2014	May 16, 2012	Mar. 31, 2014 Short-Term Incentive Plan ("STIP") [Member]	Mar. 31, 2014 Restricted Stock Units [Member] 2011 LTIP [Member]	Mar. 31, 2014 Restricted Stock Units [Member] 2011 LTIP [Member]	Mar. 31, 2014 Restricted Stock [Member] Non-executive directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total equity securities available at May 16, 2012		2,194,986
Add: 2011 LTIP RSUs forfeited by eligible employees				0	152,044	3,189
Less: Equity Plan shares awarded			(41,702)	0	(557,484)	(36,756)
Total equity securities available at March 31, 2014	1,714,277