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COMMITMENTS AND CONTINGENCIES (Narrative) (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Unfunded lines of credit and undisbursed construction loan funds $ 396.7 $ 411.0
Investment in non-marketable equity securities 4.6 3.5
Letter Of Credit [Member]    
Line of Credit Facility [Line Items]    
Letters of credit outstanding $ 12.7 $ 13.1