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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)

12 Months Ended

Dec. 31, 2022

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Schedule of components of other comprehensive income (loss)

The following table presents the components of other comprehensive income (loss) for the years ended December 31, 2022, 2021 and 2020, by component:

(Dollars in thousands)			Before Tax						Tax Effect						Net of Tax
Year ended December 31, 2022
Net change in fair value of investment securities:
Net unrealized losses on investment securities arising during the period			$	(204,250)					$	(54,109)					$	(150,141)
Less: Amortization of unrealized losses on investment securities transferred to HTM			6,218						1,520						4,698
Net change in fair value of investment securities			(198,032)						(52,589)						(145,443)
Net change in fair value of derivative:
Net unrealized gains arising during the period			6,326						1,681						4,645
Net change in fair value of derivative			6,326						1,681						4,645
Defined benefit retirement plan and SERPs:
Net actuarial gains arising during the period			2,007						537						1,470
Amortization of net actuarial losses			304						81						223
Amortization of net transition obligation			18						4						14
Settlement			4,884						1,817						3,067
Defined benefit retirement plan and SERPs			7,213						2,439						4,774
Other comprehensive loss			$	(184,493)					$	(48,469)					$	(136,024)

(Dollars in thousands)			Before Tax						Tax Effect						Net of Tax
Year ended December 31, 2021
Net change in fair value of investment securities:
Net unrealized losses on investment securities arising during the period			$	(41,237)					$	(11,030)					$	(30,207)
Less: Reclassification adjustment for gains realized in net income			(150)						(40)						(110)
Net change in fair value of investment securities			(41,387)						(11,070)						(30,317)
Defined benefit retirement plan and SERPs:
Net actuarial gains arising during the period			2,014						544						1,470
Amortization of net actuarial losses			1,036						291						745
Amortization of net transition obligation			18						4						14
Defined benefit retirement plan and SERPs			3,068						839						2,229
Other comprehensive loss			$	(38,319)					$	(10,231)					$	(28,088)

(Dollars in thousands)			Before Tax						Tax Effect						Net of Tax
Year ended December 31, 2020
Net change in fair value of investment securities:
Net unrealized gains on investment securities arising during the period			$	15,939					$	4,260					$	11,679
Less: Reclassification adjustment for losses realized in net income			201						54						147
Net change in fair value of investment securities			16,140						4,314						11,826
Defined benefit retirement plan and SERPs:
Net actuarial losses arising during the period			(1,488)						(508)						(980)
Amortization of net actuarial losses			1,160						310						850
Amortization of net transition obligation			18						5						13
Amortization of prior service cost			14						4						10
Defined benefit retirement plan and SERPs			(296)						(189)						(107)
Other comprehensive income			$	15,844					$	4,125					$	11,719

Schedule of changes in each component of AOCI, net of tax

The following table presents the changes in each component of AOCI, net of tax, for the years ended December 31, 2022, 2021 and 2020:

(Dollars in thousands)			Investment Securities						Derivatives						Defined Benefit Plans						AOCI
Year ended December 31, 2022
Balance at beginning of period			$	(3,666)					$	—					$	(4,294)					$	(7,960)
Other comprehensive (loss) income before reclassifications			(150,141)						4,645						1,470						(144,026)
Amounts reclassified from AOCI			4,698						—						3,304						8,002
Net other comprehensive income (loss)			(145,443)						4,645						4,774						(136,024)
Balance at end of period			$	(149,109)					$	4,645					$	480					$	(143,984)

(Dollars in thousands)			Investment Securities												Defined Benefit Plans						AOCI
Year ended December 31, 2021
Balance at beginning of period			$	26,651											$	(6,523)					$	20,128
Other comprehensive (loss) income before reclassifications			(30,207)												1,470						(28,737)
Amounts reclassified from AOCI			(110)												759						649
Net other comprehensive income (loss)			(30,317)												2,229						(28,088)
Balance at end of period			$	(3,666)											$	(4,294)					$	(7,960)

(Dollars in thousands)			Investment Securities												Defined Benefit Plans						AOCI
Year ended December 31, 2020
Balance at beginning of period			$	14,825											$	(6,416)					$	8,409
Other comprehensive income (loss) before reclassifications			11,679												(980)						10,699
Amounts reclassified from AOCI			147												873						1,020
Total other comprehensive income (loss)			11,826												(107)						11,719
Balance at end of period			$	26,651											$	(6,523)					$	20,128

Schedule of amounts reclassified out of each component of AOCI

The following table presents the amounts reclassified out of each component of AOCI for the years ended December 31, 2022, 2021 and 2020:

			Amount Reclassified from AOCI																		Affected Line Item in the
			Year ended December 31,																		Statement Where Net
Details about AOCI Components			2022						2021						2020						Income is Presented
			(Dollars in thousands)
Sale of available-for-sale investment securities:
Realized gains (losses) on available-for-sale investment securities			$	—					$	150					$	(201)					Net gains (losses) on sales of investment securities
Tax effect			—						(40)						54						Income tax benefit (expense)
Net of tax			$	—					$	110					$	(147)
Amortization of unrealized losses on investment securities transferred to HTM			$	(6,218)					$	—					$	—					Interest and dividends on investment securities
Tax effect			1,520						—						—						Income tax expense
Net of tax			$	(4,698)					$	—					$	—
Defined benefit plan items:
Amortization of net actuarial losses			$	(304)					$	(1,036)					$	(1,160)					Other operating expense - other (1)
Amortization of net transition obligation			(18)						(18)						(18)						Other operating expense - other (1)
Amortization of prior service cost			—						—						(14)						Other operating expense - other (1)
Settlement			(4,884)						—						—						Other operating expense - other (1)
Total before tax			(5,206)						(1,054)						(1,192)
Tax effect			1,902						295						319						Income tax expense
Net of tax			$	(3,304)					$	(759)					$	(873)
Total reclassifications, net of tax			$	(8,002)					$	(649)					$	(1,020)

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Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss).

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Tabular disclosure of the components of accumulated other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 50
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section 45
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900

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Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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