Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Details 5)

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Employee Benefit Plans (Details 5) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Summary of increase/decrease in accumulated other comprehensive loss (income), net of income tax      
Total $ (92) $ 3,223 $ 707
Pension plans, defined benefit [Member]
     
Summary of increase/decrease in accumulated other comprehensive loss (income), net of income tax      
Net actuarial loss arising during the year 424 3,434  
Amortization of actuarial loss (653) (334)  
Amortization of prior service cost (3) (3)  
Total $ (232) $ 3,097