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STOCK-BASED COMPENSATION, Stock Options (Details) - Jun. 30, 2015 - shares
Total
Stock Options [Member] | Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expiration term (in years) 10 years
Equity Compensation Plan [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares authorized (in shares) 10,500,000
Number of shares available for grant (in shares) 3,075,004