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Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2018
Mar. 31, 2017
Statement Of Financial Position [Abstract]    
Preferred Stock, Par Value $ 0.01 $ 0.01
Preferred Stock, Authorized 5,000,000 5,000,000
Preferred Stock, Issued 0 0
Common Stock, Par Value $ 0.01 $ 0.01
Common Stock, Authorized 100,000,000 100,000,000
Common Stock, Issued 48,282,784 48,453,268
Common Stock, Outstanding 48,282,784 48,453,268