Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Other Assets, Noncurrent [Abstract]
Recoverable insurance losses	$ 9,412	$ 10,468
Deferred income tax assets	33,505	19,004
Deferred finance charges – revolver	6,754	7,396
Savings plans and supplemental plan	14,472	23,208
Other	14,297	15,120
Total other assets	$ 78,440	$ 75,196