Annual report pursuant to Section 13 and 15(d)

LEASES - Rent Expense, Net (Details)

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LEASES - Rent Expense, Net (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
LEASES      
Rent expense under operating lease $ 6.3 $ 6.3 $ 6.0