Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Stock Compensation Plans - Schedule of Restricted Stock Awards (Detail) - Restricted Stock [Member] - $ / shares
shares in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-vested, Restricted Stock, Beginning Balance 70 64 61
Restricted Stock, Granted 34 30 32
Restricted Stock, Vested (28) (15) (24)
Restricted Stock, Forfeited (6) (9) (5)
Non-vested, Restricted Stock, Ending Balance 70 70 64
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance $ 24.47 $ 21.93 $ 18.51
Weighted Average Grant Date Fair Value, Granted 23.13 28.36 24.00
Weighted Average Grant Date Fair Value, Vested 23.23 23.04 17.20
Weighted Average Grant Date Fair Value, Forfeited 19.75 21.56 15.81
Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 25.03 $ 24.47 $ 21.93