SECURITIES: (Details 3) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 90,241	$ 131,633
Unrealized Losses	(390)	(773)
More Than 12 Months
Fair Value	4,711	80,966
Unrealized Losses	(50)	(1,061)
Total
Fair Value	94,952	212,599
Unrealized Losses	(440)	(1,834)
U.S. Government entity mortgage-backed securities
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0
Unrealized Losses	0
More Than 12 Months
Fair Value	944
Unrealized Losses	(1)
Total
Fair Value	944
Unrealized Losses	(1)
Mortgage-backed securities, residential
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	76,962	29,183
Unrealized Losses	(279)	(150)
More Than 12 Months
Fair Value	0	0
Unrealized Losses	0	0
Total
Fair Value	76,962	29,183
Unrealized Losses	(279)	(150)
Mortgage-backed securities, commercial
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		55,665
Unrealized Losses		(243)
More Than 12 Months
Fair Value		18,724
Unrealized Losses		(107)
Total
Fair Value		74,389
Unrealized Losses		(350)
Collateralized mortgage obligations
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	12,282	33,398
Unrealized Losses	(108)	(314)
More Than 12 Months
Fair Value	3,767	61,781
Unrealized Losses	(49)	(907)
Total
Fair Value	16,049	95,179
Unrealized Losses	(157)	(1,221)
State and municipal obligations
Less Than 12 Months
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	747	8,996
Unrealized Losses	(3)	(61)
More Than 12 Months
Fair Value	0	461
Unrealized Losses	0	(47)
Total
Fair Value	747	9,457
Unrealized Losses	$ (3)	$ (108)