Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Comprehensive Income (Parenthetical)

v2.4.0.6
Consolidated Statements of Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]      
Defined benefit pension and other postretirement plans, tax $ 50 $ 1,726 $ 502