Discontinued Operations (Narrative) (Details) - USD ($)		3 Months Ended			9 Months Ended
	Jun. 10, 2019	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Discontinued Operations
(Loss) income from discontinued operations, net of tax		$ (309,000)		$ 847,000	$ (122,192,000)	$ 3,487,000
Interest expense		0
Revolving Credit Facility [Member]
Discontinued Operations
Mandatory prepayment	$ 109,600,000
Tranche A -1 Term Loans [Member]
Discontinued Operations
Voluntary prepayment	44,400,000
Sale | MSLO
Discontinued Operations
Cash consideration	166,000,000
Earnout on performance target achieved during first three year	$ 40,000,000
Pre-tax loss					(2,008,000)
Non-cash impairment charges			$ 161,200,000		161,224,000
(Loss) income from discontinued operations, net of tax		(309,000)	$ 161,200,000	847,000	(122,192,000)	3,487,000
Interest expense				$ 1,773,000	3,570,000	$ 5,066,000
Transaction costs					$ 6,000,000
Sale | MSLO | Maximum
Discontinued Operations
Transaction costs		$ 100,000