CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-lived intangible assets
Finite-lived intangible assets, net	$ 92,815	$ 104,657
Other intangible assets
Finite and infinite lived intangible assets, gross	46,116	28,815
Finite and infinite lived intangible assets, net	138,931	133,472
Total amortization expense	25,200	26,900	$ 25,200
Non-amortizable, indefinite lived intangible assets	29,700	11,300
Customer Contracts [Member]
Finite-lived intangible assets
Finite-lived intangible assets, gross	214,201	214,125
Less: Accumulated amortization	(121,386)	(109,468)
Finite-lived intangible assets, net	$ 92,815	104,657
Patents [Member]
Finite and Indefinite Lived Intangible Assets by Major Class [Domain]
Useful life of intangible assets	15 years
Intangible Assets Excluding Goodwill and Customer Contracts [Member]
Finite-lived intangible assets
Less: Accumulated amortization	$ (10,375)	(12,512)
Other intangible assets
Finite and infinite lived intangible assets, gross	56,491	41,327
Finite and infinite lived intangible assets, net	46,116	28,815
Trademarks and Tradenames [Member]
Other intangible assets
Finite and infinite lived intangible assets, net	32,800	16,600
International franchises [Member] | Customer Contracts [Member]
Finite-lived intangible assets
Finite-lived intangible assets, net	14,900	16,800
Other intangible assets
Finite and infinite lived intangible assets, net	$ 4,200	$ 4,100
Minimum [Member] | Customer Contracts [Member]
Finite and Indefinite Lived Intangible Assets by Major Class [Domain]
Useful life of intangible assets	7 years
Minimum [Member] | Noncompete Agreements [Member]
Finite and Indefinite Lived Intangible Assets by Major Class [Domain]
Useful life of intangible assets	3 years
Maximum [Member] | Customer Contracts [Member]
Finite and Indefinite Lived Intangible Assets by Major Class [Domain]
Useful life of intangible assets	20 years
Maximum [Member] | Noncompete Agreements [Member]
Finite and Indefinite Lived Intangible Assets by Major Class [Domain]
Useful life of intangible assets	20 years