Pension Plan - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2012	Nov. 30, 2014	Feb. 28, 2015
Defined Benefit Plan Disclosure [Line Items]
Employees covered under noncontributory Pension Plan		8.00%
Compensation period preceding retirement and termination		5 years
Company expect to make cash contribution to the plan		$ 3,000,000
Period used for calculating Pension Plan liability	25 years
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Minimum required contribution to the plan is approximately			0
Predecessor [Member]
Defined Benefit Plan Disclosure [Line Items]
Period used for calculating Pension Plan liability	24 months
Minimum [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Company expect to make cash contribution to the plan			2,000,000
Maximum [Member] | Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Company expect to make cash contribution to the plan			$ 3,000,000