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Schedule of Authorized And Issued Common Stock And Preferred Stock (Detail) (USD $)
Mar. 31, 2014
Mar. 31, 2013
Stockholders' Equity [Abstract]    
Common stock shares authorized 125,000,000 125,000,000
Common stock par value $ 0.10 $ 0.10
Common stock shares issued 49,730,442 49,485,832
Preferred stock shares authorized 3,000,000 3,000,000
Preferred stock par value      
Preferred stock shares issued