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Incentive Plans Incentive Plans: Narrative (Details)
12 Months Ended
Jun. 30, 2017
USD ($)
plan
$ / shares
shares
Jun. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
$ / shares
shares
Dec. 31, 2013
shares
Dec. 31, 2010
shares
Dec. 31, 2006
shares
Dec. 31, 2003
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of share-based compensation plans | plan 2            
Share-based compensation expense | $ $ 1,500,000 $ 1,100,000 $ 1,500,000        
Income tax benefit recognized for share-based compensation plans | $ $ (57,000) $ (222,000) $ (397,000)        
Treasury stock, Shares used to fund Equity Incentive Plans for restricted stock 10,235,313 9,872,115          
2013 Equity Incentive Plan [Member] | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan       300,000      
Annual limitation on awards granted to an individual under Equity Incentive Plan 60,000            
2013 Equity Incentive Plan [Member] | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan       300,000      
Annual limitation on awards granted to an individual under Equity Incentive Plan 45,000            
Equity Incentive Plans              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options granted, weighted average grant date fair value | $ / shares $ 19.58 $ 0.00 $ 14.59        
Stock options, Exercised 102,000 80,500 52,500        
Stock options, Granted 26,000 0 369,000        
Stock options, Forfeitured 186,750 3,000 3,000        
Unrecognized share-based compensation expense, stock options | $ $ 900,000 $ 1,500,000          
Equity Incentive Plans | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options granted, weighted average grant date fair value | $ / shares $ 6.50   $ 6.06        
Term used to calculate expected volatility 84 months            
Stock options, Exercised 102,000 80,500 52,500        
Stock options, Granted 26,000 0 369,000        
Stock options, Forfeitured 186,750 3,000 3,000        
Number of shares available for grant 145,000 136,750          
Share-based compensation cost not yet recognized, weighted average period for recognition (less than) 1 year 7 months 2 years 2 months          
Forfeiture rate for Equity Incentive Plans 20.00% 20.00%          
Expected term 7 years 4 months 24 days 0 years 7 years 2 months 12 days        
Expected volatility   0.00% 53.70%        
Equity Incentive Plans | Employee Stock Option [Member] | Minimum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Expected volatility 41.40%            
Equity Incentive Plans | Employee Stock Option [Member] | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 5 years            
Maximum term for stock awards 10 years            
Expected volatility 41.70%            
Equity Incentive Plans | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period     185,000        
Number of shares available for grant 265,750 276,850          
Share-based compensation cost not yet recognized, weighted average period for recognition (less than) 1 year 8 months 2 years 2 months          
Forfeiture rate for Equity Incentive Plans 20.00% 20.00%          
Restricted stock, Vesting and distribution 87,750 10,000 65,000        
Restricted stock, Forfeited 15,250 0 1,500        
Restricted stock, grants in period 24,000 0 185,000        
Unrecognized share-based compensation expense, restricted stock | $ $ 1,132,000 $ 1,700,000          
Restricted stock, Fair value of shares vested and distributed | $ $ 1,700,000 $ 171,000 $ 1,100,000        
Equity Incentive Plans | Restricted Stock [Member] | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 5 years            
2010 Equity Incentive Plan | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan         586,250    
Annual limitation on awards granted to an individual under Equity Incentive Plan 117,250            
2010 Equity Incentive Plan | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan         288,750    
Annual limitation on awards granted to an individual under Equity Incentive Plan 43,312            
Treasury stock, Shares used to fund Equity Incentive Plans for restricted stock       300,000 288,750    
2006 Equity Incentive Plan | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan           365,000  
Annual limitation on awards granted to an individual under Equity Incentive Plan 73,000            
2006 Equity Incentive Plan | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan           185,000  
Annual limitation on awards granted to an individual under Equity Incentive Plan 27,750            
Treasury stock, Shares used to fund Equity Incentive Plans for restricted stock           185,000  
Stock Option Plans              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Stock options granted, weighted average grant date fair value | $ / shares $ 0.00 $ 0.00 $ 0.00        
Stock options, Exercised 0 0 0        
Stock options, Granted 0 0 0        
Stock options, Forfeitured 12,500 7,500 25,000        
Unrecognized share-based compensation expense, stock options | $ $ 0            
Stock Option Plans | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Term used to calculate expected volatility 84 months            
Stock options, Forfeitured 12,500 7,500 25,000        
Stock Option Plans | Employee Stock Option [Member] | Maximum              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 5 years            
Maximum term for stock awards 10 years            
2003 Stock Option Plan | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares authorized for Equity Incentive Plan             352,500
Award Vesting Term 1 | Equity Incentive Plans | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 2 years   2 years        
Restricted stock, award vesting percentage 50.00%   50.00%        
Award Vesting Term 1 | Equity Incentive Plans | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 2 years   2 years        
Restricted stock, award vesting percentage 50.00%   50.00%        
Award Vesting Term 2 | Equity Incentive Plans | Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 4 years   4 years        
Restricted stock, award vesting percentage 50.00%   50.00%        
Award Vesting Term 2 | Equity Incentive Plans | Restricted Stock [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period 4 years   4 years        
Restricted stock, award vesting percentage 50.00%   50.00%