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Securities

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Securities

Securities

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

						As of December 31, 2023
						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
						(In Thousands)
Available-for-sale:
U.S. treasuries						$	14,158					$	7					$	(389)					$	13,776
U.S. government agency securities - government-sponsored enterprises						27,986						35						(455)						27,566
Municipal securities						40,407						—						(4,526)						35,881
Residential mortgage-backed securities - government issued						69,441						1,000						(2,385)						68,056
Residential mortgage-backed securities - government-sponsored enterprises						131,321						281						(10,769)						120,833
Commercial mortgage-backed securities - government issued						2,995						—						(470)						2,525
Commercial mortgage-backed securities - government-sponsored enterprises						32,774						65						(4,470)						28,369
						$	319,082					$	1,388					$	(23,464)					$	297,006

						As of December 31, 2022
						Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
						(In Thousands)
Available-for-sale:
U.S. treasuries						$	4,977					$	—					$	(532)					$	4,445
U.S. government agency securities - government-sponsored enterprises						13,666						70						(531)						13,205
Municipal securities						45,088						90						(5,867)						39,311
Residential mortgage-backed securities - government issued						21,790						—						(2,359)						19,431
Residential mortgage-backed securities - government-sponsored enterprises						119,265						—						(12,942)						106,323
Commercial mortgage-backed securities - government issued						3,450						—						(518)						2,932
Commercial mortgage-backed securities - government-sponsored enterprises						31,515						—						(5,138)						26,377
						$	239,751					$	160					$	(27,887)					$	212,024

The amortized cost and fair value of securities held-to-maturity and the corresponding amounts of gross unrecognized gains and losses were as follows:

						As of December 31, 2023
						Amortized Cost						Gross Unrecognized Gains						Gross Unrecognized Losses						Fair Value
						(In Thousands)
Held-to-maturity:
Municipal securities						$	4,210					$	4					$	(41)					$	4,173
Residential mortgage-backed securities - government issued						1,211						—						(76)						1,135
Residential mortgage-backed securities - government-sponsored enterprises						1,078						—						(53)						1,025
Commercial mortgage-backed securities - government-sponsored enterprises						2,004						—						(82)						1,922
						$	8,503					$	4					$	(252)					$	8,255

						As of December 31, 2022
						Amortized Cost						Gross Unrecognized Gains						Gross Unrecognized Losses						Fair Value
						(In Thousands)
Held-to-maturity:
Municipal securities						$	7,467					$	7					$	(70)					$	7,404
Residential mortgage-backed securities - government issued						1,625						—						(107)						1,518
Residential mortgage-backed securities - government-sponsored enterprises						1,537						—						(93)						1,444
Commercial mortgage-backed securities - government-sponsored enterprises						2,006						—						(102)						1,904
						$	12,635					$	7					$	(372)					$	12,270

U.S. Treasuries contain treasury bonds issued by the United States Treasury. U.S. government agency securities - government-sponsored enterprises represent securities issued by Federal National Mortgage Association (“FNMA”) and the SBA. Municipal securities include securities issued by various municipalities located primarily within Wisconsin and are primarily general obligation bonds that are tax-exempt in nature. Residential and commercial mortgage-backed securities - government issued represent securities guaranteed by the Government National Mortgage Association. Residential and commercial mortgage-backed securities - government-sponsored enterprises include securities guaranteed by the Federal Home Loan Mortgage Corporation, FNMA, and the FHLB. There were 16 and seven sales of available-for-sale securities that occurred during the years ended December 31, 2023 and 2021, respectively. There were no sales of available-for-sale securities that occurred during the year ended December 31, 2022.

Total proceeds and gross realized gains and losses from sales of securities available-for-sale were as follows:

						For the Year Ended December 31,
						2023						2022						2021
						(In Thousands)
Gross gains						$	68					$	—					$	92
Gross losses						(113)						—						(63)
Net (losses) gains on sale of available-for-sale securities						$	(45)					$	—					$	29
Proceeds from sale of available-for-sale securities						$	5,085					$	—					$	14,955

At December 31, 2023 and 2022, securities with a fair value of $45.4 million and $35.9 million, respectively, were pledged to secure various obligations, including interest rate swap contracts and municipal deposits.

The amortized cost and fair value of securities by contractual maturity at December 31, 2023 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations with or without call or prepayment penalties.

						Available-for-Sale												Held-to-Maturity
						Amortized Cost						Fair Value						Amortized Cost						Fair Value
						(In Thousands)
Due in one year or less						$	22,576					$	22,569					$	1,060					$	1,057
Due in one year through five years						18,970						17,646						3,150						3,116
Due in five through ten years						12,653						11,915						—						—
Due in over ten years						28,352						25,093						—						—
						82,551						77,223						4,210						4,173
Residential mortgage-backed securities						200,762						188,889						2,289						2,160
Commercial mortgage-backed securities						35,769						30,894						2,004						1,922
						$	319,082					$	297,006					$	8,503					$	8,255

The tables below show the Corporation’s gross unrealized losses and fair value of available-for-sale investments, aggregated by investment category and length of time that individual investments were in a continuous loss position at December 31, 2023 and 2022.

The Corporation also has not specifically identified available-for-sale securities in a loss position that it intends to sell in the near term and does not believe that it will be required to sell any such securities. The Corporation reviews its securities on a quarterly basis to assess declines in fair value for credit losses. Consideration is given to such factors as the credit rating of the borrower, market conditions such as current interest rates, any adverse conditions specific to the security and delinquency status on contractual payments. For the years ended December 31, 2023 and 2022, management concluded that in all instances securities with fair value less than carrying value was due to market and other factors; thus no credit loss provision was required.

A summary of unrealized loss information for securities available-for-sale, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows:

						December 31, 2023
						Less than 12 Months												12 Months or Longer												Total
						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
						(In Thousands)
Available-for-sale:
U.S. treasuries						$	—					$	—					$	4,595					$	389					$	4,595					$	389
U.S. government agency securities - government-sponsored enterprises						13,370						30						3,076						425						16,446						455
Municipal securities						—						—						35,881						4,526						35,881						4,526
Residential mortgage-backed securities - government issued						13,178						160						13,819						2,225						26,997						2,385
Residential mortgage-backed securities - government-sponsored enterprises						19,925						285						78,086						10,484						98,011						10,769
Commercial mortgage-backed securities - government issued						—						—						2,525						470						2,525						470
Commercial mortgage-backed securities - government-sponsored enterprises						893						20						26,465						4,450						27,358						4,470
						$	47,366					$	495					$	164,447					$	22,969					$	211,813					$	23,464

						December 31, 2022
						Less than 12 Months												12 Months or Longer												Total
						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
						(In Thousands)
Available-for-sale:
U.S. treasuries						$	—					$	—					$	4,446					$	532					$	4,446					$	532
U.S. government agency obligations - government-sponsored enterprises						—						—						2,969						531						2,969						531
Municipal securities						26,759						3,132						10,133						2,735						36,892						5,867
Residential mortgage-backed securities - government issued						9,624						436						9,807						1,923						19,431						2,359
Residential mortgage-backed securities - government-sponsored enterprises						71,474						6,433						34,849						6,509						106,323						12,942
Commercial mortgage-backed securities - government issued						1,236						112						1,696						406						2,932						518
Commercial mortgage-backed securities - government-sponsored enterprises						7,758						984						18,619						4,154						26,377						5,138
						$	116,851					$	11,097					$	82,519					$	16,790					$	199,370					$	27,887

The tables below show the Corporation’s gross unrealized losses and fair value of held-to-maturity investments, aggregated by investment category and length of time that individual investments were in a continuous loss position at December 31, 2023 and 2022. At December 31, 2023, the Corporation held 29 held-to-maturity securities that were in an unrealized loss position, 24 of which have been in a continuous loss position for twelve months or greater. Management assesses held-to-maturity securities for credit losses on a quarterly basis. The assessment includes review of credit ratings, identification of delinquency and evaluation of market factors. Based on this analysis, management concludes the decline in fair value is due to market factors, specifically changes in interest rates. Accordingly, no credit loss provision was recorded in the Consolidated Statements of Income for the years ended December 31, 2023, 2022, and 2021.

A summary of unrecognized loss information for securities held-to-maturity, categorized by security type and length of time for which the security has been in a continuous unrealized loss position, follows:

						December 31, 2023
						Less than 12 Months												12 Months or Longer												Total
						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
						(In Thousands)
Held-to-maturity:
Municipal securities						$	1,424					$	4					$	2,234					$	37					$	3,658					$	41
Residential mortgage-backed securities - government issued						—						—						1,135						76						1,135						76
Residential mortgage-backed securities - government-sponsored enterprises						—						—						1,025						53						1,025						53
Commercial mortgage backed securities - government-sponsored enterprises						—						—						1,922						82						1,922						82
						$	1,424					$	4					$	6,316					$	248					$	7,740					$	252

						December 31, 2022
						Less than 12 Months												12 Months or Longer												Total
						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses						Fair Value						Unrealized Losses
						(In Thousands)
Held-to-maturity:
Municipal securities						$	6,035					$	52					$	267					$	18					$	6,302					$	70
Residential mortgage-backed securities - government issued						1,518						107						—						—						1,518						107
Residential mortgage-backed securities - government-sponsored enterprises						1,444						93						—						—						1,444						93
Commercial mortgage-backed securities - government-sponsored enterprises						1,904						102						—						—						1,904						102
						$	10,901					$	354					$	267					$	18					$	11,168					$	372

On January 1, 2023, the Corporation adopted ASU 2016-13, which replaced the legacy GAAP other-than-temporary impairment (“OTTI”) model with a credit loss model. ASU 2016-13 requires an allowance on lifetime expected credit losses on held to maturity debt securities. As of January 1, 2023 and December 31, 2023, the Corporation estimated the expected credit losses to be immaterial based on the composition of the securities portfolio.

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The entire disclosure for investments in certain debt and equity securities.

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