Long-Term Debt (Narrative) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended		5 Months Ended	4 Months Ended	5 Months Ended	4 Months Ended	5 Months Ended	4 Months Ended	5 Months Ended	4 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Term Loan Facility [Member] Minimum [Member] Base Rate [Member]	May 14, 2014 Term Loan Facility [Member] Minimum [Member] Base Rate [Member]	Sep. 30, 2014 Term Loan Facility [Member] Minimum [Member] LIBOR [Member]	May 14, 2014 Term Loan Facility [Member] Minimum [Member] LIBOR [Member]	Sep. 30, 2014 Term Loan Facility [Member] Maximum [Member] Base Rate [Member]	May 14, 2014 Term Loan Facility [Member] Maximum [Member] Base Rate [Member]	Sep. 30, 2014 Term Loan Facility [Member] Maximum [Member] LIBOR [Member]	May 14, 2014 Term Loan Facility [Member] Maximum [Member] LIBOR [Member]
Debt Instrument [Line Items]
Margin rate for loans			0.25%	0.375%	1.25%	1.375%	1.00%	1.375%	2.00%	2.375%
Repayment of principal and accrued interest on debt	$ 394,761	$ 418,316