XML 48 R35.htm IDEA: XBRL DOCUMENT v2.4.0.6
Basis of Presentation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]    
Direct acquisition cost $ 1.7 $ 5.2
Legal fees related to lawsuit against IRS 0.8 2.7
Write-off of cost   $ 1.0