XML 41 R29.htm IDEA: XBRL DOCUMENT v3.3.1.900
Credit Facility (Details) - USD ($)
$ in Millions
9 Months Ended
Dec. 31, 2015
Mar. 31, 2015
Credit facility    
Revolving Line of Credit    
Amount outstanding $ 0.0 $ 0.0
Revolving Line of Credit    
Revolving Line of Credit    
Term of debt instrument 2 years  
Maximum borrowing capacity $ 12.0  
Prime rate at the end of the period (as a percent) 3.50%  
Unused line fee (as a percent) 0.15%