Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans (Details 10)

v2.4.0.6
Employee Benefit Plans (Details 10) (Other postretirement benefit plans [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Other postretirement benefit plans [Member]
     
Changes in the Company's benefit obligation, plan assets and funded status for the plan      
Projected benefit obligation at beginning of year $ 999 $ 999  
Interest cost 39 45 50
Actuarial gain 95 66  
Benefit payments (103) (111)  
Projected benefit obligation at end of year $ 1,030 $ 999 $ 999