Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plans - Schedule of Restricted Stock Awards (Detail)

v3.8.0.1
Stock Compensation Plans - Schedule of Restricted Stock Awards (Detail) - Restricted Stock [Member] - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-vested, Restricted Stock, Beginning Balance 120 70 70
Restricted Stock, Granted 59 82 34
Restricted Stock, Vested (25) (17) (28)
Restricted Stock, Forfeited (28) (15) (6)
Non-vested, Restricted Stock, Ending Balance 126 120 70
Non-vested, Weighted Average Grant Date Fair Value, Beginning Balance $ 21.96 $ 25.03 $ 24.47
Weighted Average Grant Date Fair Value, Granted 23.03 20.43 23.13
Weighted Average Grant Date Fair Value, Vested 20.44 24.27 23.23
Weighted Average Grant Date Fair Value, Forfeited 25.27 23.85 19.75
Non-vested, Weighted Average Grant Date Fair Value, Ending Balance $ 22.02 $ 21.96 $ 25.03
Non-vested, Aggregate Intrinsic Value, Ending Balance $ 142