Debt (Fixed Charge Metrics) (Detail)	9 Months Ended	10 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Debt Disclosure [Line Items]
Covenant Limit			1.75	1.75	1.75	1.75	1.50
Actual FCCR			2.58	2.70	2.65	2.69	2.39
Amended Credit Facility [Member]
Debt Disclosure [Line Items]
Minimum fixed charge coverage ratio March 31, 2012 to December 31, 2012		1.25
Minimum fixed charge coverage ratio March 31, 2013 to December 31, 2013	1.5
Minimum fixed charge coverage ratio March 31, 2014 and thereafter	1.75