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SHARE-BASED COMPENSATION (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2014
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Apr. 18, 2017
Apr. 22, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award vesting period     3 years        
Stock options granted     0 0 0    
Intrinsic value of options exercised     $ 688 $ 15 $ 71    
Proceeds from exercise of stock options     422 105 52    
Tax benefit realized from stock options exercised     0 0 0    
Unrecognized compensation cost from non-vested stock options     $ 0        
Dividend yield     0.00%        
Estimated forfeiture rate     10.00%        
Fair value of awards granted     $ 3 3 2    
2011 Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Additional shares authorized for plan 1,000,000 700,000          
Shares authorized for equity compensation plan           3,275,392 2,275,392
Shares available for future issuance under plan     623,437        
Minimum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award expiration period     7 years        
Maximum [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Award expiration period     10 years        
Restricted Stock Units (RSUs) [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Unrecognized compensation cost from non-vested awards, weighted-average period     2 years 3 months 4 days        
Number of unvested units     928,066        
Annual unit vesting rate     33.33%        
Fair value of awards granted     $ 4,600 $ 2,700 $ 2,000    
Weighted average share price of awards granted     $ 7.17 $ 5.36 $ 7.59    
Compensation expense for awards     $ 2,200 $ 2,700 $ 4,500    
Unrecognized compensation costs related to awards     $ 4,900