COMMITMENTS AND CONTINGENCIES (Commitments Without Recorded Liability) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for Unfunded Loan Commitments	$ 9,900,000		$ 9,900,000		$ 13,300,000
Mortgage loan applications, day interest rate is locked			45 days
Minimum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked			30 days
Maximum [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Mortgage loan applications, day interest rate is locked			60 days
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	3,341,992,000		$ 3,341,992,000		3,207,072,000
Financial Standby Letter of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	20,491,000		20,491,000		18,415,000
Loan Origination Commitments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	147,138,000		147,138,000		101,426,000
Risk Participation Agreement [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	40,557,000		40,557,000		40,949,000
Loans Held for Sale Origination Commitments [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	127,481,000		127,481,000		169,653,000
Commitments to Sell Loans Secured by one to four Residential Properties [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	67,060,000		67,060,000		79,414,000
Counterparty default losses on forward contracts	0	$ 0	0	$ 0
Commitments to Sell Mortgage Backed Securities [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contract or Notional Amount	151,500,000		151,500,000		204,000,000
Amount funded out of a total commitment to invest [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Commitment	4,500,000		4,500,000		2,800,000
Other Commitments [Line Items]
Other Commitment	4,500,000		4,500,000		2,800,000
Other Commitment, 2021 Agreement	180,000		180,000
Other Commitment, 2021 Agreement	180,000		180,000
Amount unfunded out of a total commitment to invest [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Commitment	5,500,000		5,500,000		7,200,000
Other Commitments [Line Items]
Other Commitment	5,500,000		5,500,000		$ 7,200,000
Other Commitment, 2021 Agreement	4,300,000		4,300,000
Other Commitment, 2021 Agreement	4,300,000		4,300,000
Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Other Commitment	4,500,000		4,500,000
Other Commitments [Line Items]
Other Commitment	$ 4,500,000		$ 4,500,000