Equity-Based Compensation - SARs Additional Information (Detail) - SARs - USD ($) $ / shares in Units, $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of SARs exercisable (in shares)	280,563	465,961
SARs exercisable weighted average price (in dollars per share)	$ 11.47	$ 10.65
Number of SARs expected to vest (in shares)	26,012
Aggregate intrinsic value of SARs outstanding	$ 859	$ 100