Annual report pursuant to Section 13 and 15(d)

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

v2.4.0.8
Stock Compensation Plans - Schedule of Restricted Stock Awards (Detail) (Restricted Stock [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Non-vested, Restricted Stock, Beginning Balance 61 49 32
Restricted Stock, Granted 32 26 32
Restricted Stock, Vested (24) (8) (15)
Restricted Stock, Forfeited (5) (6)  
Non-vested, Restricted Stock, Ending Balance 64 61 49
Nonvested, Weighted Average Grant Date Fair Value, Beginning Balance $ 18.51 $ 19.11 $ 15.77
Weighted Average Grant Date Fair Value, Granted $ 24.00 $ 18.65 $ 20.91
Weighted Average Grant Date Fair Value, Vested $ 17.20 $ 22.02 $ 15.84
Weighted Average Grant Date Fair Value, Forfeited $ 15.81 $ 19.19  
Nonvested, Weighted Average Grant Date Fair Value, Ending Balance $ 21.93 $ 18.51 $ 19.11
Nonvested, Aggregate Intrinsic Value, Ending Balance $ 633