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Line of Credit (Detail Textuals) - USD ($)
9 Months Ended
Dec. 31, 2015
Mar. 31, 2015
Line of Credit Facility [Line Items]    
Outstanding amount of line of credit facility $ 213,000,000 $ 199,000,000
Line of credit facility    
Line of Credit Facility [Line Items]    
Maximum amount of line of credit facility $ 225,000,000  
Line of credit facility, Basis Spread on Variable Rate 3.00%  
Line of credit facility, Description of Variable Rate Basis 30-day LIBOR  
Line of credit facility, Floor rate 1.00%  
Interest rate 4.00% 4.00%
Outstanding amount of line of credit facility $ 213,000,000 $ 199,000,000
Amount available under the line of credit $ 12,000,000 $ 26,000,000