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Goodwill and Intangible Assets (Detail) - (Table 2) - USD ($)	3 Months Ended					6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Dec. 31, 2017	Mar. 31, 2015	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Finite-Lived Trade Names, Gross	$ 9,220,000					$ 9,220,000
Other Finite-Lived Intangible Assets, Gross	14,000					14,000
Finite-Lived Contractual Rights, Gross	4,200,000					4,200,000
Finite-Lived Customer Lists, Gross	47,019,000					47,019,000
Finite-Lived Noncompete Agreements, Gross	2,440,000					2,440,000
Finite-Lived Intangible Assets, Accumulated Amortization	49,930,000					49,930,000
Impairment of Intangible Assets, Finite-lived						0
Accumulated amortization	58,368,000					58,368,000
Finite-Lived Intangible Assets, Gross	68,493,000					68,493,000
Indefinite-Lived Contractual Rights	26,762,000					26,762,000
Loss/(gain) on disposal of fixed assets	4,050,000		$ 0	$ 1,000,000	$ 3,045,000	4,050,000	$ 0
Finite-Lived Intangible Assets, Net	18,563,000					18,563,000
Indefinite-Lived Trademarks	92,238,000					92,238,000
Intangible Assets, Gross (Excluding Goodwill)	204,026,000					204,026,000
Intangibles – net	137,563,000		$ 147,312,000			137,563,000	$ 147,312,000	$ 143,311,000
Re-acquired right [Member]
Accumulated amortization	8,438,000					8,438,000
Indefinite-lived Intangible Assets (Excluding Goodwill)	35,200,000					35,200,000
Trademarks [Member]
Accumulated amortization	0					0
Indefinite-lived Intangible Assets (Excluding Goodwill)	100,333,000					100,333,000
Trade names [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	8,168,000					8,168,000
Finite-Lived Intangible Assets, Net	1,052,000					1,052,000
Customer relationships [Member]
Estimated Lives		10 years
Finite-Lived Intangible Assets, Accumulated Amortization	29,508,000					29,508,000
Finite-Lived Intangible Assets, Net	17,511,000					17,511,000
Licensing agreements [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	5,600,000					5,600,000
Finite-Lived Intangible Assets, Net	0					0
Finite-Lived License Agreements, Gross	5,600,000					5,600,000
Non-compete agreement [Member]
Estimated Lives		5 years
Finite-Lived Intangible Assets, Accumulated Amortization	2,440,000					2,440,000
Finite-Lived Intangible Assets, Net	0					0
Re-acquired right [Member]
Estimated Lives		2 years
Finite-Lived Intangible Assets, Accumulated Amortization	4,200,000					4,200,000
Finite-Lived Intangible Assets, Net	0					0
Other [Member]
Estimated Lives		3 years
Finite-Lived Intangible Assets, Accumulated Amortization	14,000					14,000
Finite-Lived Intangible Assets, Net	$ 0					$ 0
Minimum [Member] | Trade names [Member]
Estimated Lives						6 years
Minimum [Member] | Licensing agreements [Member]
Estimated Lives						3 years
Maximum [Member] | Trade names [Member]
Estimated Lives						10 years
Maximum [Member] | Licensing agreements [Member]
Estimated Lives						6 years

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- Definition

The accumulated amount of amortization of a major intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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