Other Long-Term Liabilities - Summary of Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014
Other Liabilities Disclosure [Abstract]
Environmental reserves-Note 13	$ 6,868		$ 8,650
Obligation from divestiture	3,032	[1]	3,479	[1]
Other	1,696		1,291
Total	$ 11,596		$ 13,420

[1] Obligation from divestiture represents the legal liability of the Company relative to a pension plan for a discontinued operation. (See Note 10).