DISCONTINUED OPERATIONS (Narrative) (Details) - USD ($)		3 Months Ended								12 Months Ended
	Jun. 10, 2019	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
Discontinued Operations
(Loss) income from discontinued operations, net of tax		$ (2,871,000)	$ (309,000)	$ (1,309,000)	$ (120,574,000)	$ 3,496,000	$ 847,000	$ 1,388,000	$ 1,253,000	$ (125,063,000)	$ 6,984,000	$ 104,615,000
Interest expense												0
Prepaid expenses and other current assets		$ 6,839,000				$ 7,243,000				6,839,000	7,243,000
Revolving Credit Facility [Member]
Discontinued Operations
Mandatory prepayment	$ 109,600,000
Tranche A -1 Term Loans [Member]
Discontinued Operations
Voluntary prepayment	44,400,000
MSLO
Discontinued Operations
Accretion and guaranteed expenses												900,000
Sale | MSLO
Discontinued Operations
Cash consideration	166,000,000
Earnout on performance target achieved during first three year	$ 40,000,000
Pre-tax loss										(4,273,000)
Non-cash impairment charges					$ 161,200,000					161,224,000
(Loss) income from discontinued operations, net of tax										(125,063,000)	6,984,000	104,615,000
Interest expense										3,570,000	$ 6,888,000	$ 891,000
Transaction costs										$ 6,000,000