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Stock-Based Compensation (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 01, 2020
Mar. 01, 2019
Aug. 23, 2017
Jun. 30, 2017
Mar. 31, 2018
Aug. 31, 2017
May 31, 2017
Aug. 31, 2016
May 31, 2016
Aug. 31, 2015
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Expired unexercised, number of shares                           474,443  
Exercisable stock options                         105,982 154,803  
Stock-based compensation charge (reversal), net                     $ 575 $ 621 $ 2,010 $ (68)  
Share-based compensation, number of shares exercised                           68,740  
Number of shares, forfeitures                         37,333    
Number of shares, exercised                       0      
Deferred tax asset       $ 900 $ 700           $ 700   $ 700   $ 900
Common stock, shares issued       56,369,737 56,855,187           56,855,187   56,855,187   56,369,737
Options exercise price range, lower limit                         $ 7.35    
Options exercise price range, upper limit                         24.46    
August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         $ 23.00    
Percentage of increase target price                         35.00%    
Closing price, per share     $ 9.38                        
Restricted Stock [Member] | Forecast [Member] | Chief Financial Officer [Member] | Tranche One [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vested number of shares of restricted stock   11,409                          
Restricted Stock [Member] | Forecast [Member] | Chief Financial Officer [Member] | Tranche Two [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vested number of shares of restricted stock 11,408                            
Stock Options [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Expired unexercised, number of shares                           474,443  
Granted, Number of shares                     0        
Unrecognized compensation cost         $ 0           $ 0   $ 0    
Stock Options [Member] | Employees [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Number of shares, forfeitures                         37,333 0  
Restricted Stock [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares         22,817 588,594   387,000              
Fair value of restricted stock vested                         $ 500 $ 700  
Unrecognized compensation cost         $ 4,000           4,000   4,000    
Cumulative unrecorded stock-based compensation charge                         $ 3,200    
Unrecognized compensation cost, expected recognition period, years                         2 years    
Vested number of shares of restricted stock           56,250   72,091              
Restricted Stock [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Expected volatility                         44.00%    
Expected life (in years)                         3 years    
Future dividends                         $ 0    
Expected volatility calculation term                         30 days    
Strike price                         $ 0    
Restricted Stock [Member] | August 2017 [Member] | Below $15 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         $ 15.00    
Vesting percentage                         0.00%    
Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting percentage                         33.00%    
Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting percentage                         66.00%    
Restricted Stock [Member] | August 2017 [Member] | At or above $23 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         $ 23.00    
Vesting percentage                         100.00%    
Restricted Stock [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares             150,000                
Restricted Stock [Member] | Executive Officer [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares           210,000                  
Restricted Stock [Member] | Executive Officer [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares               350,000              
Restricted Stock [Member] | Non-Employee Directors [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period                             3 years
Vested number of shares of restricted stock       61,995                      
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares           52,594                  
Restricted Stock [Member] | Non-Employee Directors [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares               37,000              
Restricted Stock [Member] | Executive Officers And Employees [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares           326,000                  
Restricted Stock [Member] | Employees [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares                   301,537          
Reversed stock-based compensation charge, shares                       301,537   301,537  
Restricted Stock [Member] | Former Chief Executive Officer [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Granted, Number of shares             200,000                
Restricted Stock [Member] | One-Third Shares Vest 2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         $ 2.60    
Restricted Stock [Member] | Two-Thirds Shares Vest 2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         2.80    
Restricted Stock [Member] | All Shares Vest 2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         3.00    
Restricted Stock [Member] | One-Third Shares Vest 2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         2.88    
Restricted Stock [Member] | Two-Thirds Shares Vest 2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         3.30    
Restricted Stock [Member] | All Shares Vest 2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, to be achieved                         $ 3.76    
Restricted Stock [Member] | Full Time Basis [Member] | Executive Officers And Employees [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting date                         Aug. 23, 2020    
Restricted Stock [Member] | Recipient Is A Director [Member] | Non-Employee Directors [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting date                         Aug. 23, 2018    
Restricted Stock [Member] | Amended [Member] | Non-Employee Directors [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Vesting period                             1 year
2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, linear interpolation                         $ 2.80    
2018 Fundamental EPS [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Number of common stock shares that will impact fundamental EPS calculation                 10,000,000            
Unrecognized compensation cost         $ 3,900           $ 3,900   $ 3,900    
2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS, linear interpolation                         $ 3.30    
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Risk-free rate                         1.275%    
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         $ 15.00    
Minimum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         19.00    
Minimum [Member] | 2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS                         2.60    
Minimum [Member] | 2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS                         $ 2.88    
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Risk-free rate                         1.657%    
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $15 and below $19 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         $ 19.00    
Maximum [Member] | Restricted Stock [Member] | August 2017 [Member] | At or above $19 and below $23 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Performance target, per share                         23.00    
Maximum [Member] | 2019 Fundamental EPS [Member] | August 2016 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS                         3.00    
Maximum [Member] | 2018 Fundamental EPS [Member] | August 2015 [Member]                              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Fundamental EPS                         $ 3.76