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GOODWILL AND OTHER INTANGIBLE ASSETS - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Other intangible assets
Gross Value	$ 133,704		$ 133,704		$ 188,589
Accumulated Amortization	21,739		21,739		70,685
Net Value	111,965		111,965		117,904
Intangible assets	30,473		30,473		30,473
Intangible Assets, Gross (Excluding Goodwill)	164,177		164,177		219,062
Intangible Assets, Net (Excluding Goodwill)	142,438		142,438		148,377
Amortization expense	2,900	$ 3,300	5,900	$ 7,200
Water rights
Other intangible assets
Intangible assets	7,031		7,031		7,031
Trademarks
Other intangible assets
Intangible assets	23,442		23,442		23,442
Customer relationships
Other intangible assets
Gross Value	116,078		116,078		171,245
Accumulated Amortization	15,723		15,723		66,402
Net Value	100,355		100,355		104,843
Patents
Other intangible assets
Gross Value	10,110		10,110		10,110
Accumulated Amortization	1,918		1,918		1,417
Net Value	8,192		8,192		8,693
Other intangibles
Other intangible assets
Gross Value	7,516		7,516		7,234
Accumulated Amortization	4,098		4,098		2,866
Net Value	$ 3,418		$ 3,418		$ 4,368