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Goodwill and Intangible Assets (Detail) - (Table 2) - USD ($)	3 Months Ended					9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Dec. 31, 2017	Mar. 31, 2015	Sep. 30, 2019	Sep. 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	50,689,000					50,689,000
Finite-Lived Noncompete Agreements, Gross	2,440,000					2,440,000
Finite-Lived Intangible Assets, Accumulated Amortization	51,196,000					51,196,000
Impairment of Intangible Assets, Finite-lived						0
Accumulated amortization	59,932,000					59,932,000
Finite-Lived Intangible Assets, Gross	72,163,000					72,163,000
Indefinite-Lived Contractual Rights	26,464,000					26,464,000
Loss on disposal of fixed assets	0	$ 4,050,000	$ 0	$ 1,000,000	$ 3,045,000	4,050,000	$ 0
Finite-Lived Intangible Assets, Net	20,967,000					20,967,000
Indefinite-Lived Trademarks	115,498,000					115,498,000
Intangible Assets, Gross (Excluding Goodwill)	230,956,000					230,956,000
Intangibles – net	162,929,000		$ 146,313,000			162,929,000	$ 146,313,000	$ 143,311,000
Re-acquired right [Member]
Accumulated amortization	8,736,000					8,736,000
Indefinite-lived Intangible Assets (Excluding Goodwill)	35,200,000					35,200,000
Trademarks [Member]
Accumulated amortization	0					0
Loss on disposal of fixed assets						8,095,000
Indefinite-lived Intangible Assets (Excluding Goodwill)	123,593,000					123,593,000
Trade names [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	8,592,000					8,592,000
Finite-Lived Intangible Assets, Net	628,000					628,000
Customer relationships [Member]
Finite-Lived Intangible Assets, Accumulated Amortization	30,350,000					30,350,000
Finite-Lived Intangible Assets, Net	20,339,000					20,339,000
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] | Customer relationships [Member]
Estimated Lives						10 years
Minimum [Member] | Licensing agreements [Member]
Estimated Lives						3 years
Maximum [Member] | Trade names [Member]
Estimated Lives						10 years
Maximum [Member] | Customer relationships [Member]
Estimated Lives						20 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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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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