SECURITIES, Contractual Maturity (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	$ 16,503,000		$ 16,503,000
Due after one year through five years	22,785,000		22,785,000
Due after five years through ten years	279,970,000		279,970,000
Due after ten years	13,113,000		13,113,000
Amortized cost	566,351,000		566,351,000		$ 409,267,000
Fair value of available-for-sale securities by contractual maturity [Abstract]
Due in one year or less	16,599,000		16,599,000
Due after one year through five years	23,106,000		23,106,000
Due after five years through ten years	279,110,000		279,110,000
Due after ten years	13,272,000		13,272,000
Fair value	572,785,000		572,785,000		421,190,000
Sale of mortgage-backed securities		$ 0	25,526,000	$ 0
Realized gain on sale of mortgage-backed securities	0	$ 0	1,096,000	$ 0
Mortgage-backed Securities of Government Sponsored Agencies [Member]
Amortized cost of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	233,980,000		233,980,000
Amortized cost	233,980,000		233,980,000		347,579,000
Fair value of available-for-sale securities by contractual maturity [Abstract]
Without single maturity date	240,698,000		240,698,000
Fair value	240,698,000		$ 240,698,000		$ 357,876,000
Sale of mortgage-backed securities	25,500,000
Realized gain on sale of mortgage-backed securities	$ 1,096,000