SEGMENT AND GEOGRAPHICAL INFORMATION - Schedule of Geographical Operating Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 178,793	$ 156,417	$ 184,800	$ 191,546	$ 166,146	$ 200,890	$ 245,906	$ 203,196	$ 711,556	$ 816,138	$ 819,596
Operating Income									107,027	170,068	215,491
Identifiable Assets	2,860,996				2,780,666				2,860,996	2,780,666
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									354,395	390,396	419,402
Operating Income									58,945	83,357	138,528
Identifiable Assets	2,288,642				2,282,480				2,288,642	2,282,480
New Zealand
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales									357,161	425,742	400,194
Operating Income									48,082	86,711	$ 76,963
Identifiable Assets	$ 572,354				$ 498,186				$ 572,354	$ 498,186