FAIR VALUE - RECURRING BASIS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Financial assets:
Available-for-sale debt securities, Fair Value	$ 486,847		$ 486,847			$ 471,355
Mortgage loans held for sale, at fair value	40,028	$ 13,883	40,028	$ 13,883	$ 39,384	19,224	$ 11,313	$ 8,971
Consumer loans held for sale	164		164		$ 3,431	598
Consumer loans receivable held for investment	667		667			998
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	3,015		3,015			3,188
U.S. Treasury securities and U.S. Government agencies
Financial assets:
Available-for-sale debt securities, Fair Value	139,796		139,796			134,640
Private label mortgage backed security
Financial assets:
Available-for-sale debt securities, Fair Value	3,023		3,023			3,495
Mortgage backed securities - residential
Financial assets:
Available-for-sale debt securities, Fair Value	273,281		273,281			255,847
Collateralized mortgage obligations
Financial assets:
Available-for-sale debt securities, Fair Value	57,598		57,598			63,371
Corporate bonds
Financial assets:
Available-for-sale debt securities, Fair Value	9,649		9,649			10,002
Trust preferred security
Financial assets:
Available-for-sale debt securities, Fair Value	3,500		3,500			4,000
Freddie Mac preferred stock
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	485		485			714
Community Reinvestment Act mutual fund
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	2,530		2,530			2,474
Recurring basis
Financial assets:
Available-for-sale debt securities, Fair Value	486,847		486,847			471,355
Mortgage loans held for sale, at fair value	40,028		40,028			19,224
Consumer loans held for investment	667		667
Consumer loans held for sale	164		164			598
Consumer loans receivable held for investment						998
Rate lock loan commitments	4,436		4,436			789
Mandatory forward contracts	659		659
Interest rate swap agreements	15,324		15,324			5,062
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	3,015		3,015			3,188
Financial Liabilities:
Mandatory forward contracts						131
Interest rate swap agreements	15,491		15,491			5,166
Transfers between Level 1, 2 or 3	0	$ 0	0	$ 0
Recurring basis | U.S. Treasury securities and U.S. Government agencies
Financial assets:
Available-for-sale debt securities, Fair Value	139,796		139,796			134,640
Recurring basis | Private label mortgage backed security
Financial assets:
Available-for-sale debt securities, Fair Value	3,023		3,023			3,495
Recurring basis | Mortgage backed securities - residential
Financial assets:
Available-for-sale debt securities, Fair Value	273,281		273,281			255,847
Recurring basis | Collateralized mortgage obligations
Financial assets:
Available-for-sale debt securities, Fair Value	57,598		57,598			63,371
Recurring basis | Corporate bonds
Financial assets:
Available-for-sale debt securities, Fair Value	9,649		9,649			10,002
Recurring basis | Trust preferred security
Financial assets:
Available-for-sale debt securities, Fair Value	3,500		3,500			4,000
Recurring basis | Freddie Mac preferred stock
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	485		485			714
Recurring basis | Community Reinvestment Act mutual fund
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	2,530		2,530			2,474
Recurring basis | Fair Value, Inputs, Level 1
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	2,530		2,530			2,474
Recurring basis | Fair Value, Inputs, Level 1 | Community Reinvestment Act mutual fund
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	2,530		2,530			2,474
Recurring basis | Fair Value, Inputs, Level 2
Financial assets:
Available-for-sale debt securities, Fair Value	480,324		480,324			463,860
Mortgage loans held for sale, at fair value	40,028		40,028			19,224
Rate lock loan commitments	4,436		4,436			789
Mandatory forward contracts	659		659
Interest rate swap agreements	15,324		15,324			5,062
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	485		485			714
Financial Liabilities:
Mandatory forward contracts						131
Interest rate swap agreements	15,491		15,491			5,166
Recurring basis | Fair Value, Inputs, Level 2 | U.S. Treasury securities and U.S. Government agencies
Financial assets:
Available-for-sale debt securities, Fair Value	139,796		139,796			134,640
Recurring basis | Fair Value, Inputs, Level 2 | Mortgage backed securities - residential
Financial assets:
Available-for-sale debt securities, Fair Value	273,281		273,281			255,847
Recurring basis | Fair Value, Inputs, Level 2 | Collateralized mortgage obligations
Financial assets:
Available-for-sale debt securities, Fair Value	57,598		57,598			63,371
Recurring basis | Fair Value, Inputs, Level 2 | Corporate bonds
Financial assets:
Available-for-sale debt securities, Fair Value	9,649		9,649			10,002
Recurring basis | Fair Value, Inputs, Level 2 | Freddie Mac preferred stock
Equity securities with readily determinable fair value:
Equity securities with readily determinable fair value	485		485			714
Recurring basis | Fair Value, Inputs, Level 3
Financial assets:
Available-for-sale debt securities, Fair Value	6,523		6,523			7,495
Consumer loans held for investment	667		667
Consumer loans held for sale	164		164			598
Consumer loans receivable held for investment						998
Recurring basis | Fair Value, Inputs, Level 3 | Private label mortgage backed security
Financial assets:
Available-for-sale debt securities, Fair Value	3,023		3,023			3,495
Recurring basis | Fair Value, Inputs, Level 3 | Trust preferred security
Financial assets:
Available-for-sale debt securities, Fair Value	$ 3,500		$ 3,500			$ 4,000