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Securities
9 Months Ended
Sep. 30, 2020
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 September 30, 2020
Amortized CostGross
Unrealized Gains
Gross
Unrealized Losses
Fair Value
 (In Thousands)
Available-for-sale:
U.S. government agency securities - government-sponsored enterprises
$21,601 $10 $(74)$21,537 
Municipal securities13,520 462 (19)13,963 
Residential mortgage-backed securities - government issued11,018 527 — 11,545 
Residential mortgage-backed securities - government-sponsored enterprises107,765 2,691 (9)110,447 
Commercial mortgage-backed securities - government issued5,848 194 — 6,042 
Commercial mortgage-backed securities - government-sponsored enterprises12,639 811 — 13,450 
Other securities
2,205 85 — 2,290 
 $174,596 $4,780 $(102)$179,274 
 As of December 31, 2019
Amortized CostGross
Unrealized Gains
Gross
Unrealized Losses
Fair Value
 (In Thousands)
Available-for-sale:
U.S. government agency securities - government-sponsored enterprises
$23,616 $152 $(10)$23,758 
Municipal securities160 — — 160 
Residential mortgage-backed securities - government issued16,119 234 (5)16,348 
Residential mortgage-backed securities - government-sponsored enterprises
111,561 847 (406)112,002 
Commercial mortgage-backed securities - government issued6,705 45 (87)6,663 
Commercial mortgage-backed securities - government-sponsored enterprises11,953 23 (9)11,967 
Other securities
2,205 30 — 2,235 
 $172,319 $1,331 $(517)$173,133 

The amortized cost and fair value of securities held-to-maturity and the corresponding amounts of gross unrealized gains and losses were as follows:
 As of September 30, 2020
Amortized CostGross
Unrealized Gains
Gross
Unrealized Losses
Fair Value
 (In Thousands)
Held-to-maturity:
Municipal securities$18,591 $470 $(21)$19,040 
Residential mortgage-backed securities - government issued4,121 131 — 4,252 
Residential mortgage-backed securities - government-sponsored enterprises
4,173 180 — 4,353 
Commercial mortgage-backed securities - government-sponsored enterprises2,012 307 — 2,319 
 $28,897 $1,088 $(21)$29,964 
 As of December 31, 2019
Amortized CostGross
Unrealized Gains
Gross
Unrealized Losses
Fair Value
 (In Thousands)
Held-to-maturity:
Municipal securities$19,727 $335 $(8)$20,054 
Residential mortgage-backed securities - government issued5,776 19 (9)5,786 
Residential mortgage-backed securities - government-sponsored enterprises
5,183 51 (23)5,211 
Commercial mortgage-backed securities - government-sponsored enterprises
2,014 123 — 2,137 
 $32,700 $528 $(40)$33,188 

U.S. government agency securities - government-sponsored enterprises represent securities issued by the 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. Other securities represent certificates of deposit of insured banks and savings institutions with an original maturity greater than three months. There were no sales of available-for-sale securities that occurred during the three months ended September 30, 2020 and one sale that occurred during the nine months ended September 30, 2020. There were 37 and 46 sales of available-for-sale securities that occurred during the three and nine months ended September 30, 2019, respectively.

At September 30, 2020 and December 31, 2019, securities with a fair value of $79.8 million and $30.3 million, respectively, were pledged to secure various obligations, including interest rate swap contracts, outstanding FHLB advances, additional FHLB availability, the Federal Reserve Discount Window, and municipal deposits. At September 30, 2020, pledged securities with a fair value of $129.3 million were available to secure various obligations. No pledged securities were available to secure various obligations as of December 31, 2019.
The amortized cost and fair value of securities by contractual maturity at September 30, 2020 are shown below. Actual maturities may differ from contractual maturities because issuers have the right to call or prepay certain obligations with or without call or prepayment penalties.
Available-for-SaleHeld-to-Maturity
 Amortized CostFair ValueAmortized CostFair Value
(In Thousands)
Due in one year or less$— $— $2,804 $2,823 
Due in one year through five years8,148 8,439 12,085 12,344 
Due in five through ten years33,651 35,229 10,872 11,513 
Due in over ten years132,797 135,606 3,136 3,284 
 $174,596 $179,274 $28,897 $29,964 

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 September 30, 2020 and December 31, 2019. At September 30, 2020, the Corporation held 12 available-for-sale securities that were in an unrealized loss position. Such securities have not experienced credit rating downgrades; however, they have generally declined in value due to the current interest rate environment. At September 30, 2020, the Corporation held one available-for-sale security that had been in a continuous unrealized loss position for twelve months or greater.

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 monitor its exposure to other-than-temporary impairment. Consideration is given to such factors as the length of time and extent to which the security has been in an unrealized loss position, changes in security ratings, and an evaluation of the present value of expected future cash flows, if necessary. Based on the Corporation’s evaluation, it is expected that the Corporation will recover the entire amortized cost basis of each security. Accordingly, no other-than-temporary impairment was recorded in the unaudited Consolidated Statements of Income for the three and nine months ended September 30, 2020 and 2019.

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:
 As of September 30, 2020
 Less than 12 Months12 Months or LongerTotal
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
 (In Thousands)
Available-for-sale:
U.S. government agency securities - government-sponsored enterprises
$12,933 $41 $4,086 $33 $17,019 $74 
Municipal securities
$2,460 $19 $— $— $2,460 $19 
Residential mortgage-backed securities - government-sponsored enterprises
15,115 — — 15,115 
 $30,508 $69 $4,086 $33 $34,594 $102 
 As of December 31, 2019
 Less than 12 Months12 Months or LongerTotal
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
 (In Thousands)
Available-for-sale:
U.S. government agency securities - government-sponsored enterprises
$4,363 $10 $— $— $4,363 $10 
Residential mortgage-backed securities - government issued
4,619 — — 4,619 
Residential mortgage-backed securities - government-sponsored enterprises
36,972 253 11,304 153 48,276 406 
Commercial mortgage-backed securities - government issued
— — 4,727 87 4,727 87 
Commercial mortgage-backed securities - government-sponsored enterprises
2,245 1,047 3,292 
 $48,199 $272 $17,078 $245 $65,277 $517 

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 September 30, 2020 and December 31, 2019. At September 30, 2020, the Corporation held two held-to-maturity securities that were in an unrealized loss position. Such securities have not experienced credit rating downgrades; however, they have generally declined in value due to the current interest rate environment. There was one held-to-maturity security that had been in a continuous loss position for twelve months or greater as of September 30, 2020. It is expected that the Corporation will recover the entire amortized cost basis of each held-to-maturity security based upon an evaluation of aforementioned factors. Accordingly, no other-than-temporary impairment was recorded in the unaudited Consolidated Statements of Income for the three and nine months ended September 30, 2020 and 2019.

A summary of unrealized 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:
 As of September 30, 2020
 Less than 12 Months12 Months or LongerTotal
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
 (In Thousands)
Held-to-maturity:
Municipal securities
$271 $18 $213 $$484 $21 
 As of December 31, 2019
 Less than 12 Months12 Months or LongerTotal
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
Fair ValueUnrealized
Losses
 (In Thousands)
Held-to-maturity:
Municipal securities
$499 $$— $— $499 $
Residential mortgage-backed securities - government issued
— — 1,887 1,887 
Residential mortgage-backed securities - government-sponsored enterprises
1,364 2,144 18 3,508 23 
 $1,863 $13 $4,031 $27 $5,894 $40