SECURITIES: (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Debt Securities, Available-for-sale

The fair value of securities available-for-sale and related gross unrealized gains and losses recognized in accumulated other comprehensive income were as follows:

	December 31, 2021
	Amortized		Unrealized
(Dollar amounts in thousands)	Cost		Gains		Losses		Fair Value
U.S. Government entity mortgage-backed securities	$	118,176	$	2,688	$	(741)	$	120,123
Mortgage-backed securities, residential	628,920		4,387		(6,879)		626,428
Mortgage-backed securities, commercial	15,480		191		—		15,671
Collateralized mortgage obligations	175,501		1,272		(1,768)		175,005
State and municipal obligations	362,843		17,833		(578)		380,098
Municipal taxable	38,445		396		(215)		38,626
U.S. Treasury	205		—		(1)		204
Collateralized debt obligations	—		3,359		—		3,359
Other securities	5,220		—		—		5,220
TOTAL	$	1,344,790	$	30,126	$	(10,182)	$	1,364,734

	December 31, 2020
	Amortized		Unrealized
(Dollar amounts in thousands)	Cost		Gains		Losses		Fair Value
U.S. Government entity mortgage-backed securities	$	92,710	$	5,105	$	(1)	$	97,814
Mortgage-backed securities, residential	346,606		8,794		(279)		355,121
Mortgage-backed securities, commercial	17,931		559		—		18,490
Collateralized mortgage obligations	209,556		4,761		(157)		214,160
State and municipal obligations	285,837		20,294		—		306,131
Municipal taxable	22,440		702		(3)		23,139
U.S. Treasury	2,750		3		—		2,753
Collateralized debt obligations	—		3,136		—		3,136
TOTAL	$	977,830	$	43,354	$	(440)	$	1,020,744

Schedule Of Gross Gain Or Loss realised

Below is a summary of the gross gains and losses realized by the Corporation on investment sales and calls during the years ended December 31, 2021, 2020 and 2019, respectively.

(Dollar amounts in thousands)	2021		2020		2019
Proceeds	$	12,886	$	36,696	$	11,210
Gross gains	274		290		55
Gross losses	(160)		(57)		(11)

Schedule of contractual maturities of debt securities

Contractual maturities of debt securities at year-end 2021 were as follows. Securities not due at a single maturity or with no maturity date, primarily mortgage-backed and collateralized mortgage obligations, are shown separately.

	Available-for-Sale
	Amortized		Fair
(Dollar amounts in thousands)	Cost		Value
Due in one year or less	$	16,769	$	16,956
Due after one but within five years	47,479		48,391
Due after five but within ten years	83,680		87,192
Due after ten years	376,961		395,091
	524,889		547,630
Mortgage-backed securities and collateralized mortgage obligations	819,901		817,104
TOTAL	$	1,344,790	$	1,364,734

Schedule of gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss position

The following tables show the securities' gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss position, at December 31, 2021 and 2020.

	December 31, 2021
	Less Than 12 Months				More Than 12 Months				Total
			Unrealized				Unrealized				Unrealized
(Dollar amounts in thousands)	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
U.S. Government entity mortgage-backed securities	$	48,939	$	(739)	146		(2)		$	49,085	$	(741)
Mortgage-backed securities, residential	436,726		(5,281)		60,807		(1,598)		497,533		(6,879)
Collateralized mortgage obligations	73,530		(1,327)		12,505		(441)		86,035		(1,768)
State and municipal obligations	54,040		(578)		—		—		54,040		(578)
Municipal taxable	15,048		(195)		729		(20)		15,777		(215)
U.S. Treasury	204		(1)		—		—		204		(1)
Total temporarily impaired securities	$	628,487	$	(8,121)	$	74,187	$	(2,061)	$	702,674	$	(10,182)

 

	December 31, 2020
	Less Than 12 Months				More Than 12 Months				Total
			Unrealized				Unrealized				Unrealized
(Dollar amounts in thousands)	Fair Value		Losses		Fair Value		Losses		Fair Value		Losses
U.S. Government entity mortgage-backed securities	$	—	$	—	$	944	$	(1)	$	944	$	(1)
Mortgage-backed securities, residential	76,962		(279)		—		—		76,962		(279)
Collateralized mortgage obligations	12,282		(108)		3,767		(49)		16,049		(157)
Municipal taxable	747		(3)		—		—		747		(3)
U.S. Treasury	250		—		—		—		250		—
Total temporarily impaired securities	$	90,241	$	(390)	$	4,711	$	(50)	$	94,952	$	(440)

Rollforward of the credit losses recognized in earnings

The table below presents a rollforward of the credit losses recognized in earnings for the years presented: 

(Dollar amounts in thousands)	2021		2020		2019
Beginning balance, January 1,	$	2,974	$	2,974	$	2,974
Reductions for securities called during the period	—		—		—
Ending balance, December 31,	$	2,974	$	2,974	$	2,974