STOCK-BASED INCENTIVE COMPENSATION - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares
Aggregate Intrinsic Value
Weighted Average Remaining Contractual Life at December 31, 2019	2 years 1 month 17 days
Stock Options
Options
Balance at December 31, 2018 | shares	0
Acquired in Merger | shares	812,564.75
Granted | shares	0
Exercised | shares	(158,269.75)
Forfeited and expired | shares	(9,320)
Balance at December 31, 2019 | shares	644,975
Exercisable at December 31, 2019 | shares	597,856
Weighted Average Exercise Price
Balance at December 31, 2018 | $ / shares	$ 0.00
Acquired in Merger | $ / shares	13.88
Granted | $ / shares	0.00
Exercised | $ / shares	7.64
Forfeited and expired | $ / shares	17.72
Balance at December 31, 2019 | $ / shares	15.36
Exercisable at December 31, 2019 | $ / shares	$ 15.76
Aggregate Intrinsic Value
Balance at December 31, 2018 | $	$ 0
Acquired in Merger | $	3,935
Granted | $	0
Exercised | $	995
Exercisable at December 31, 2019 | $	2,524
Forfeited and expired | $	29
Balance at December 31, 2019 | $	$ 2,754
Weighted Average Remaining Contractual Life at December 31, 2019	2 years 5 months
Weighted Average Remaining Contractual Life Exercisable at December 31, 2019	1 year 11 months