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 March 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Available-for-sale:
U.S. government agency securities - government-sponsored enterprises	$	23,089	$	143	$	(15	)	$	23,217
Municipal securities	4,862		116		—			4,978
Residential mortgage-backed securities - government issued	13,267		667		—			13,934
Residential mortgage-backed securities - government-sponsored enterprises	108,507		3,633		—			112,140
Commercial mortgage-backed securities - government issued	6,411		85		(30		)	6,466
Commercial mortgage-backed securities - government-sponsored enterprises	11,904		674		—			12,578
Other securities	2,205		46		—			2,251
	$	170,245	$	5,364	$	(45	)	$	175,564



	As of December 31, 2019
	Amortized Cost		Gross 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 securities	160		—		—			160
Residential mortgage-backed securities - government issued	16,119		234		(5		)	16,348
Residential mortgage-backed securities - government-sponsored enterprises	111,561		847		(406		)	112,002
Commercial mortgage-backed securities - government issued	6,705		45		(87		)	6,663
Commercial mortgage-backed securities - government-sponsored enterprises	11,953		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 March 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
Held-to-maturity:
Municipal securities	$	18,800	$	299	$	(36	)	$	19,063
Residential mortgage-backed securities - government issued	5,336		151		—			5,487
Residential mortgage-backed securities - government-sponsored enterprises	4,624		151		—			4,775
Commercial mortgage-backed securities - government-sponsored enterprises	2,014		273		—			2,287
	$	30,774	$	874	$	(36	)	$	31,612



	As of December 31, 2019
	Amortized Cost		Gross 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 issued	5,776		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 one and no sales of available-for-sale securities that occurred during the three months ended March 31, 2020 and 2019, respectively.

At March 31, 2020 and December 31, 2019, securities with a fair value of $67.9 million and $30.3 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 March 31, 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-Sale				Held-to-Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In Thousands)
Due in one year or less	$	1,160	$	1,167	$	1,465	$	1,471
Due in one year through five years	7,264		7,459		12,613		12,750
Due in five through ten years	33,217		34,677		12,654		13,198
Due in over ten years	128,604		132,261		4,042		4,193
	$	170,245	$	175,564	$	30,774	$	31,612

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 March 31, 2020 and December 31, 2019. At March 31, 2020, the Corporation held four 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 March 31, 2020, the Corporation held three available-for-sale securities 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 months ended March 31, 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 March 31, 2020
	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. government agency securities - government-sponsored enterprises	$	4,318	$	15	$	—	$	—	$	4,318	$	15
Commercial mortgage-backed securities - government issued	—		—		3,962		30		3,962		30
	$	4,318	$	15	$	3,962	$	30	$	8,280	$	45



	As of December 31, 2019
	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. government agency securities - government-sponsored enterprises	$	4,363	$	10	$	—	$	—	$	4,363	$	10
Residential mortgage-backed securities - government issued	4,619		5		—		—		4,619		5
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		4		1,047		5		3,292		9
	$	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 March 31, 2020 and December 31, 2019. At March 31, 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 were no held-to-maturity securities that had been in a continuous loss position for twelve months or greater as of March 31, 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 months ended March 31, 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 March 31, 2020
	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	$	470	$	36	$	—	$	—	$	470	$	36



	As of December 31, 2019
	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	$	499	$	8	$	—	$	—	$	499	$	8
Residential mortgage-backed securities - government issued	—		—		1,887		9		1,887		9
Residential mortgage-backed securities - government-sponsored enterprises	1,364		5		2,144		18		3,508		23
	$	1,863	$	13	$	4,031	$	27	$	5,894	$	40