GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Mortgage Servicing Rights) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Servicing Asset at Amortized Value, Balance [Roll Forward]
Additions—through purchase		$ 62	$ 27
Servicing Contracts [Member]
Morgage Servicing Rights at Amortized Value [Line Items]
Loans Serviced For Others		2,840,000		$ 2,770,000
Custodial Accounts		3,500		$ 3,200
Servicing Asset at Amortized Value, Balance [Roll Forward]
Balance, net of valuation allowance, beginning of the period		17,206	15,223
Additions—amounts capitalized		1,953	2,010
Amortization	[1]	(1,231)	(1,853)
Servicing Asset at Fair Value, Other Changes in Fair Value		(18)	0
Balance, net of valuation allowance, end of the period	[2]	18,008	$ 15,407
Valuation allowance, end of period		$ 0

[1] Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income within mortgage banking operations and any unamortized balance is fully amortized if the loan repays in full.

[2] There was no valuation allowance on mortgage servicing rights as of both March 31, 2022 and 2021.