SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash Paid For:
Interest	$ 34,844	$ 36,402	$ 44,226
Income taxes	23,794	11	12
Non-Cash Activity:
Accounts payable for purchase of property, plant and equipment	44,281	8,325	5,731
Right-of-use assets acquired by operating lease	$ 1,315	189	278
Market value of common units issued under deferred compensation plans before tax withholding requirements		$ 1,082	$ 3,837