DEBT - SUMMARY (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt
Total Debt	$ 614.7	$ 629.0
Less: Current portion	(65.0)	(65.0)
Total Long-term Debt	549.7	564.0
Less: Deferred loan fees	(14.0)	(14.3)
Total Long-term Debt, net of deferred loan fees	535.7	549.7
3.66 %, payable through 2023
Debt
Total Debt	$ 13.7	13.7
Interest rate (as a percent)	3.66%
4.16 %, payable through 2027
Debt
Total Debt	$ 28.8	28.8
Interest rate (as a percent)	4.16%
3.37 %, payable through 2027
Debt
Total Debt	$ 69.2	69.2
Interest rate (as a percent)	3.37%
3.14%, payable through 2031
Debt
Total Debt	$ 142.0	151.2
Interest rate (as a percent)	3.14%
4.31 %, payable through 2032
Debt
Total Debt	$ 25.4	25.4
Interest rate (as a percent)	4.31%
5.34 %, payable through 2028
Debt
Total Debt	$ 14.3	15.4
Interest rate (as a percent)	5.34%
5.27 %, payable through 2029
Debt
Total Debt	$ 16.5	17.6
Interest rate (as a percent)	5.27%
1.22 %, payable through 2043
Debt
Total Debt	$ 174.1	174.1
Interest rate (as a percent)	1.22%
1.35 %, payable through 2044
Debt
Total Debt	$ 130.7	$ 133.6
Interest rate (as a percent)	1.35%
Revolving Credit Facility
Debt
Maximum borrowing capacity under revolving credit facility	$ 650.0