LEASES - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($) lease item	Feb. 01, 2021 USD ($)
LEASES
Operating lease assets		$ 45.6
Operating lease liabilities		$ 45.3
Number of leases terminated | lease	3
Number of branches combined to other locations | item	3
Decrease in operating lease liability	$ (3.7)
Early termination fee	$ 4.0