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Stock-Based Compensation Stock Option Awards (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Aug. 14, 2015
Aug. 13, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated share-based compensation expense $ 701 $ 988 $ 1,805 $ 1,738    
Stock-based Awards Payable in Cash [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated share-based compensation expense $ 40 $ 96 $ 331 $ 115    
Unrestricted Stock [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 6 9 12 9    
Grant date fair value (in shares) $ 20.38 $ 19.70 $ 22.15 $ 19.70    
Restricted Stock Units (RSUs) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price         $ 60.00 $ 6.00
Number granted (in shares) 0 0 0 22    
Grant date fair value (in shares) $ 0.00 $ 0.00 $ 0.00 $ 27.20    
Cash-Settled Restricted Stock Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 0 2 0 46    
Grant date fair value (in shares) $ 0.00 $ 22.10 $ 0.00 $ 26.96    
Performance Based Stock Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 0 0 0 22    
Grant date fair value (in shares) $ 0.00 $ 0.00 $ 0.00 $ 27.20    
Cash-Settled Performance Based Stock Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 0 2 0 46    
Grant date fair value (in shares) $ 0.00 $ 22.10 $ 0.00 $ 26.96