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STOCK BASED COMPENSATION PLANS - Company Nonvested Common Shares (Details) - $ / shares
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Shares      
Nonvested at June 30 128,498 18,604 43,811
Granted 135,585 131,558 155,927
Vested (141,527) (21,664) (181,134)
Nonvested at June 30 122,556 128,498 18,604
Weighted-Average Grant-Date Fair Value      
Nonvested at June 30 $ 2.97 $ 1.88 $ 1.59
Granted 4.25 3.04 2.00
Vested 3.33 2.70 1.89
Nonvested at June 30 $ 3.96 $ 2.97 $ 1.88