BUSINESS DESCRIPTION & SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Advertising Costs and Cash Flow (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
BUSINESS DESCRIPTION & SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Advertising Expense	$ 18,800	$ 11,100	$ 11,500
Interest Paid, Net	123,031	120,897	129,508
Income taxes paid (received), net	836	(553)	(8,374)
Interest Paid, Capitalized	5,590	1,660	3,737
Acquired equipment	13,888	2,534	$ 6,227
Accrued capital expenditures	$ 52,900	$ 17,400