SECURITIES: (Details 3) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Less Than 12 Months
Fair Value	$ 131,633	$ 130,116
Unrealized Losses	(773)	(1,288)
More Than 12 Months
Fair Value	80,966	405,894
Unrealized Losses	(1,061)	(13,926)
Total
Fair Value	212,599	536,010
Unrealized Losses	(1,834)	(15,214)
U.S. Government entity mortgage-backed securities
Less Than 12 Months
Fair Value	29,183
Unrealized Losses	(150)
More Than 12 Months
Fair Value	0
Unrealized Losses	0
Total
Fair Value	29,183
Unrealized Losses	(150)
Mortgage-backed securities, residential
Less Than 12 Months
Fair Value	55,665	3,052
Unrealized Losses	(243)	(4)
More Than 12 Months
Fair Value	18,724	11,356
Unrealized Losses	(107)	(467)
Total
Fair Value	74,389	14,408
Unrealized Losses	(350)	(471)
Mortgage-backed securities, commercial
Less Than 12 Months
Fair Value		39,997
Unrealized Losses		(553)
More Than 12 Months
Fair Value		111,423
Unrealized Losses		(3,477)
Total
Fair Value		151,420
Unrealized Losses		(4,030)
Collateralized mortgage obligations
Less Than 12 Months
Fair Value	33,398	52,838
Unrealized Losses	(314)	(455)
More Than 12 Months
Fair Value	61,781	241,373
Unrealized Losses	(907)	(8,969)
Total
Fair Value	95,179	294,211
Unrealized Losses	(1,221)	(9,424)
State and municipal obligations
Less Than 12 Months
Fair Value	8,996	34,229
Unrealized Losses	(61)	(276)
More Than 12 Months
Fair Value	461	41,742
Unrealized Losses	(47)	(1,013)
Total
Fair Value	9,457	75,971
Unrealized Losses	$ (108)	$ (1,289)