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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, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Aug. 14, 2015
Aug. 13, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated share-based compensation expense $ 528 $ 701 $ 965 $ 1,805    
Stock-based Awards Payable in Cash            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Allocated share-based compensation expense $ 75 $ 40 $ 120 $ 331    
Restricted Stock            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 7 6 13 12    
Grant date fair value (usd per share) $ 19.12 $ 20.38 $ 17.55 $ 22.15    
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 56 0 56 0    
Grant date fair value (usd per share) $ 17.76 $ 0.00 $ 17.76 $ 0.00    
Award vesting period 3 years          
Exercise price (usd per share)         $ 60.00 $ 6.00
Performance-Based Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number granted (in shares) 28 0 28 0    
Grant date fair value (usd per share) $ 17.76 $ 0.00 $ 17.76 $ 0.00