INCOME TAXES - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 31, 2019	Jan. 31, 2018
Operating Loss Carryforwards [Line Items]
Deferred income tax benefit						$ (1,244)	$ 1,250	$ (15,525)
Deferred tax liabilities, goodwill									$ 2,385	$ 937
Increase (decrease) in valuation allowance	$ (248)	$ (2,137)	$ 698	$ (1,635)			213	834
Deferred tax (benefit), indefinite lived assets						(297)
Increase in tax provision due to Tax Act								33,700
Increase (decrease) deferred tax benefit related to continuing operations					$ (29,234)			(36,556)
Deferred tax benefit of indefinite lived deferred tax liabilities due to US tax reform					12,758	0	0	12,758
Net deferred tax asset	5,934		7,075			5,934	7,075
Net operating loss carryforwards subject to expiration	110,587					110,587
Net operating loss carryforwards not subject to expiration	67,399					67,399
State net operating loss carryforwards expiry period	101,628					101,628
Alternative minimum tax credit carryforwards	951		1,902			951	1,902
General business tax credit carryforwards	6,273		6,192			6,273	6,192
Deferred tax expense (benefit) due to Tax Cuts and Jobs Act					(15,614)
Unrecognized tax benefit net of federal benefit on state issue			1		2		1	2
Unrecognized tax benefits	0					0
Uncertain tax positions, accrued interest	1		2		3	1	2	3
Uncertain tax positions, penalties	1		1		2	1	1	2
Accrued income tax expense	1		$ 2		$ 3	1	2	$ 3
Federal
Operating Loss Carryforwards [Line Items]
Net deferred tax asset	8,577					8,577
State
Operating Loss Carryforwards [Line Items]
Net deferred tax liability	(2,643)					(2,643)
Goodwill
Operating Loss Carryforwards [Line Items]
Deferred income tax benefit						(2,385)	$ (937)
Complete Disposal Company, Inc
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 1,756					$ 1,756