EARNINGS PER SHARE - Summary of Basic Earnings Per Share (Details) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2017	Nov. 30, 2017	Jun. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2017 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Net income | $			$ 15,975	$ 16,342	$ 39,267	$ 32,980
Weight average common shares - basic (in shares) | shares			45,650	37,895	45,578	37,895
Basic earnings per share (in dollars per share) | $ / shares			$ 0.35	$ 0.43	$ 0.86	$ 0.87
Stock split conversion ratio	36	36