INCOME TAXES - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019	Aug. 06, 2018
Deferred Tax Assets, Valuation Allowance	$ 432				$ 2,265				$ 432	$ 2,265		$ 100
Deferred Tax Assets, Net	38,326				27,964				38,326	27,964
Benefit/(provision) for income taxes	2,817	$ (64)	$ 653	$ (469)	(1,910)	$ (1,329)	$ (726)	$ (592)	$ 2,937	$ (4,557)	$ (17,425)
Effective income tax rate continuing operations									(93.00%)	22.70%	106.60%
Pre-tax consolidated income									$ 3,157	$ 20,051	$ 16,349
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									21.00%	21.00%	35.00%
Operating Loss Carryforwards, Limitations on Use									approximately $0.8 million per year.
Operating Loss Carryforwards	11,300								$ 11,300
ANI Canada [Member]
Deferred Tax Assets, Valuation Allowance	400				1,900				400	$ 1,900
Deferred Tax Assets, Net													$ 1,900
Operating Loss Carryforwards	$ 7,900				$ 300				$ 7,900	$ 300