COMMON STOCK - Initial Public Offering (Details) $ / shares in Units, $ in Thousands				1 Months Ended	12 Months Ended
	Jun. 10, 2016 $ / shares	May 26, 2016 $ / shares	Jul. 22, 2015 $ / shares shares	Jun. 30, 2016 $ / shares	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Initial Public Offering
Offering expenses of IPO paid in period					$ 449	$ 7,202
Special dividend paid (dollars per share) | $ / shares				$ 4.30
Common shares
Initial Public Offering
Stock split, conversion ratio			11.139
Special dividend declared (dollars per share) | $ / shares		$ 4.30
Special dividend paid (dollars per share) | $ / shares	$ 4.30
Common shares | IPO
Initial Public Offering
Public offering price per share | $ / shares			$ 15.00
Proceeds from issuance of common stock, net						81,762
Underwriting discounts and commissions						6,375
Offering expenses of IPO, aggregate						2,934
Offering expenses of IPO paid in period						$ 827
Common shares | IPO, excluding over-allotment options
Initial Public Offering
Shares sold | shares			6,071,429
Common shares | Over-Allotment Option
Initial Public Offering
Shares sold | shares			910,714