Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Restricted Cash (Details)

v2.4.0.6
Restricted Cash (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Mar. 31, 2011
Restricted Cash (Textual) [Abstract]    
Restricted cash and cash equivalents related to insurance policy $ 5.2 $ 5.3
Restricted cash and cash equivalents for expected contribution to AICF $ 138.7