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Equity Incentive Plan - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 17, 2013
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Equity incentive plan name 2013 Omnibus Incentive Plan              
Number of shares repurchased               846,400
Shares repurchased, amount               $ 13,297
Average price of shares purchased (in usd per share)               $ 15.71
Share-based compensation expense   $ 598 $ 662 $ 2,234 $ 2,088      
Share-based compensation expense, tax related benefit   $ 221 $ 245 $ 827 $ 773      
Weighted average fair value of each option granted (in usd per share)       $ 4.53 $ 3.59      
Options outstanding (in shares)   1,529,300 1,500,100 1,529,300 1,500,100 1,498,000 1,513,500  
Remaining contractual life (years)       7 years 7 years 10 months 24 days 7 years 8 months 8 years 7 months 6 days  
Stock Options                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized   $ 2,718 $ 3,851 $ 2,718 $ 3,851      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       1 year 7 months 21 days 2 years      
Stock Options | Minimum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Remaining contractual life (years)       5 years 5 years      
Stock Options | Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Remaining contractual life (years)       7 years 7 years      
Restricted Stock                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   $ 4,451 $ 4,163 $ 4,451 $ 4,163      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       1 year 8 months 16 days 2 years      
Non-vested (in shares)   248,750 310,470 248,750 310,470 310,470 403,965  
Restricted Stock | Minimum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       5 years 5 years      
Restricted Stock | Maximum                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period       7 years 7 years      
2013 Omnibus Incentive Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Equity incentive plan description provides for awards of restricted stock, restricted stock units, stock options, stock appreciation rights and cash awards to directors, emeritus directors, officers, employees and advisory directors              
Number of shares authorized (in shares) 2,962,400              
Shares held for awards of stock options and stock appreciation rights (in shares) 2,116,000              
Shares held for awards of restricted stock and restricted stock units (in shares) 846,400