Schedule of Pre-Petition Liabilities Subject to Compromise (Detail) - USD ($) $ in Thousands		Jun. 30, 2017	Mar. 31, 2017
Liabilities Subject To Compromise [Line Items]
Amount outstanding		$ 2,039,437	$ 2,040,525
Accrued interest payable		23,736
Lessor claims - sale leaseback agreements		323,595
Liabilities subject to compromise		2,389,557
Term Loan Facility
Liabilities Subject To Compromise [Line Items]
Amount outstanding	[1]	300,000	300,000
September 2013 Senior Unsecured Notes
Liabilities Subject To Compromise [Line Items]
Aggregate debt outstanding	[1]	500,000	500,000
August 2011 Senior Unsecured Notes
Liabilities Subject To Compromise [Line Items]
Aggregate debt outstanding	[1]	165,000	165,000
September 2010 Senior Unsecured Notes
Liabilities Subject To Compromise [Line Items]
Aggregate debt outstanding	[1]	382,500	382,500
Senior Notes
Liabilities Subject To Compromise [Line Items]
Make-whole provision - Senior notes		94,726
Revolving Credit Facility
Liabilities Subject To Compromise [Line Items]
Outstanding borrowing	[1],[2]	$ 600,000	$ 600,000

[1] At June 30, 2017, the term loan, revolving line of credit and senior notes have been classified as liabilities subject to compromise as a result of the bankruptcy petition filed on May 17, 2017. Refer to Note (3) - Liabilities Subject to Compromise for additional information. As of June 30, 2017 and March 31, 2017, the aggregate fair value (Level 2) of the term loan, revolver and senior notes were $1.1 billion and $1.1 billion, respectively.

[2] The revolver was fully utilized at June 30, 2017 and March 31, 2017, respectively.