Supplemental Disclosures of Cash Flow Information - Increase (Decrease) in Cash Due to Changes Working Capital (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Supplemental Cash Flow Elements [Abstract]
Receivables	$ (10,351)	$ (5,876)		$ 24,755
Inventories	(7,563)	(39,017)		(32,163)
Prepaid expenses and other current assets	1,953	(3,298)		367
Accounts payable, accrued expenses, and other liabilities	(995)	10,771		(6,276)
Total	$ (16,956)	$ (37,420)	[1]	$ (13,317)	[1]

[1] See Note 2. Restatement of Previously Issued Financial Statements.