Quarterly report pursuant to Section 13 or 15(d)

Employee Benefit Plans (Details)

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Employee Benefit Plans (Details) (Pension Plans, Defined Benefit [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Pension Plans, Defined Benefit [Member]
       
Components of pension expense (income)        
Service cost $ 136 $ 115 $ 408 $ 345
Interest cost 357 355 1,070 1,065
Expected returns on assets (684) (678) (2,053) (2,034)
Amortization of Unrecognized prior service cost 1 1 3 3
Amortization of Actuarial loss 252 129 758 387
Net pension expense (income) $ 62 $ (78) $ 186 $ (234)