XML 96 R80.htm IDEA: XBRL DOCUMENT v3.7.0.1
Components of Net Periodic Cost (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Compensation And Retirement Disclosure [Abstract]      
Service Cost - Benefits Earned During the Period $ 1,001 $ 1,039 $ 874
Interest Cost of Projected Benefit Obligation 1,584 1,525 1,278
Expected Return on Plan Assets (1,606) (1,751) (1,680)
Recognized Net Actuarial Loss 1,712 1,773 609
Amortization of Prior-Service Cost 359 300 11
Net Periodic Pension Cost $ 3,050 $ 2,886 $ 1,092