GOODWILL AND OTHER INTANGIBLE ASSETS (Finite-lived and Indefinite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Finite-lived intangible assets
Cost	$ 608,332	$ 610,711
Accumulated Amortization	288,925	264,911
Net	319,407	345,800
Total permits and other intangible assets, cost	730,800	734,039
Total permits and other intangible assets, net	441,875	469,128
Trademarks and trade names
Finite-lived intangible assets
Trademarks and trade names	122,468	123,328
Permits
Finite-lived intangible assets
Cost	177,583	174,721
Accumulated Amortization	79,358	74,347
Net	98,225	100,374
Customer and supplier relationships
Finite-lived intangible assets
Cost	393,487	399,224
Accumulated Amortization	179,824	158,972
Net	213,663	240,252
Other intangible assets
Finite-lived intangible assets
Cost	37,262	36,766
Accumulated Amortization	29,743	31,592
Net	$ 7,519	$ 5,174