Goodwill and Intangible Assets (Detail) - (Table 2) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 3,045	$ 4,045
Goodwill, Impairment Loss		1,000	$ 0	$ 3,045
Re-acquired right [Member]
Cost Basis		35,200	35,200
Accumulated amortization		7,601	9,539
Net Carrying Amount		27,599	25,661
Trademarks [Member]
Cost Basis		100,333	100,333
Accumulated amortization		0	0
Net Carrying Amount		96,288	97,288
Total [Member]
Cost Basis		204,026	193,886
Accumulated amortization		48,677	46,455
Net Carrying Amount		151,304	144,386
Trade names [Member]
Cost Basis		9,220	4,590
Accumulated amortization		4,760	3,335
Net Carrying Amount		4,460	1,255
Customer relationships [Member]
Cost Basis		47,019	41,509
Accumulated amortization		24,127	21,341
Net Carrying Amount		22,892	20,168
Licensing agreements [Member]
Cost Basis		5,600	5,600
Accumulated amortization		5,600	5,600
Net Carrying Amount		0	0
Non-compete agreement [Member]
Cost Basis		2,440	2,440
Accumulated amortization		2,375	2,426
Net Carrying Amount		65	14
Re-acquired right [Member]
Cost Basis		4,200	4,200
Accumulated amortization		4,200	4,200
Net Carrying Amount		0	0
Other [Member]
Cost Basis		14	14
Accumulated amortization		14	14
Net Carrying Amount		0	0
Total [Member]
Cost Basis		68,493	58,353
Accumulated amortization		41,076	36,916
Net Carrying Amount		$ 27,417	$ 21,437
Minimum [Member] | Trade names [Member]
Estimated Lives		6	6
Minimum [Member] | Licensing agreements [Member]
Estimated Lives		3	3
Maximum [Member] | Trade names [Member]
Estimated Lives		10	10
Maximum [Member] | Licensing agreements [Member]
Estimated Lives		6	6