Securities

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Available for Sale Debt Securities

The following tables present the amortized cost, gross unrealized holding gains, gross unrealized holding losses, ACL on securities and fair value of securities by major security type and class of security:


(Dollars in thousands)
December 31, 2021	Amortized Cost	Unrealized Gains	Unrealized Losses	Allowance for Credit Losses	Fair Value
Available for Sale Debt Securities:
Obligations of U.S. government-sponsored enterprises	$200,953	$12	($4,511)	$—	$196,454
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	828,319	6,850	(10,207)	—	824,962

Individual name issuer trust preferred debt securities	9,373	—	(235)	—	9,138
Corporate bonds	13,155	—	(850)	—	12,305
Total available for sale debt securities	$1,051,800	$6,862	($15,803)	$—	$1,042,859


(Dollars in thousands)
December 31, 2020	Amortized Cost	Unrealized Gains	Unrealized Losses	Allowance for Credit Losses	Fair Value
Available for Sale Debt Securities:
Obligations of U.S. government-sponsored enterprises	$131,186	$628	($145)	$—	$131,669
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	725,890	14,942	(527)	—	740,305

Individual name issuer trust preferred debt securities	13,341	—	(672)	—	12,669
Corporate bonds	11,153	—	(1,225)	—	9,928
Total available for sale debt securities	$881,570	$15,570	($2,569)	$—	$894,571

Accrued interest receivable on available for sale debt securities totaled $2.3 million and $2.4 million, respectively, as of December 31, 2021 and 2020.

At December 31, 2021 and 2020, securities with a fair value of $332.0 million and $291.9 million, respectively, were pledged as collateral for FHLB borrowings, potential borrowings with the FRBB, certain public deposits and for other purposes. See Note 12 for additional discussion of FHLB borrowings.

The schedule of maturities of available for sale debt securities is presented below. Mortgage-backed securities are included based on weighted average maturities, adjusted for anticipated prepayments. All other debt securities are included based on contractual maturities. Actual maturities may differ from amounts presented because certain issuers have the right to call or prepay obligations with or without call or prepayment penalties.


(Dollars in thousands)	Available for Sale
December 31, 2021	Amortized Cost	Fair Value
Due in one year or less	$159,936	$159,288
Due after one year to five years	383,094	381,503
Due after five years to ten years	403,300	397,503
Due after ten years	105,470	104,565
Total securities	$1,051,800	$1,042,859

Included in the above table are debt securities with an amortized cost balance of $223.0 million and a fair value of $217.4 million at December 31, 2021 that are callable at the discretion of the issuers. Final maturities of the callable securities range from 2 years to 15 years, with call features ranging from 1 month to 2 years.

The following table summarizes amounts relating to sales of securities:


(Dollars in thousands)
For the periods ended December 31,	2021	2020	2019
Proceeds from sales	$—	$—	$11,877

Gross realized gains	$—	$—	$—
Gross realized losses	—	—	(53)
Net realized losses on securities	$—	$—	($53)

Assessment of Available for Sale Debt Securities for Impairment

Management assesses the decline in fair value of investment securities on a regular basis. Unrealized losses on debt securities may occur from current market conditions, increases in interest rates since the time of purchase, a structural change in an investment, volatility of earnings of a specific issuer, or deterioration in credit quality of the issuer. Management evaluates both qualitative and quantitative factors to assess whether an impairment exists.

The following tables summarize temporarily impaired securities, segregated by length of time the securities have been in a continuous unrealized loss position:


(Dollars in thousands)	Less than 12 Months			12 Months or Longer			Total
December 31, 2021	#	Fair Value	Unrealized Losses	#	Fair Value	Unrealized Losses	#	Fair Value	Unrealized Losses
Obligations of U.S. government-sponsored enterprises	12	$152,733	($3,313)	6	$43,202	($1,198)	18	$195,935	($4,511)
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	41	514,419	(7,270)	21	108,983	(2,937)	62	623,402	(10,207)
Individual name issuer trust preferred debt securities	—	—	—	3	9,138	(235)	3	9,138	(235)
Corporate bonds	—	—	—	4	12,305	(850)	4	12,305	(850)
Total temporarily impaired securities	53	$667,152	($10,583)	34	$173,628	($5,220)	87	$840,780	($15,803)


(Dollars in thousands)	Less than 12 Months			12 Months or Longer			Total
December 31, 2020	#	Fair Value	Unrealized Losses	#	Fair Value	Unrealized Losses	#	Fair Value	Unrealized Losses
Obligations of U.S. government-sponsored enterprises	6	$63,856	($145)	—	$—	$—	6	$63,856	($145)
Mortgage-backed securities issued by U.S. government agencies and U.S. government-sponsored enterprises	16	107,283	(527)	—	—	—	16	107,283	(527)
Individual name issuer trust preferred debt securities	—	—	—	5	12,669	(672)	5	12,669	(672)
Corporate bonds	—	—	—	3	9,928	(1,225)	3	9,928	(1,225)
Total temporarily impaired securities	22	$171,139	($672)	8	$22,597	($1,897)	30	$193,736	($2,569)

Deterioration in credit quality of the underlying issuers of the securities, deterioration in the condition of the financial services industry, worsening of the current economic environment, or declines in real estate values, among other things, may further affect the fair value of these securities and increase the potential that certain unrealized losses be designated as credit losses, and the Corporation may incur write-downs.

Obligations of U.S. Government Agency and U.S. Government-Sponsored Enterprise Securities, including Mortgage-Backed Securities

The gross unrealized losses on U.S. government agency and U.S. government-sponsored debt securities, including mortgage-backed securities, were primarily attributable to relative changes in interest rates since the time of purchase. The contractual cash flows for these securities are guaranteed by U.S. government agencies and U.S. government-sponsored enterprises. The issuers of these securities continue to make timely principal and interest payments and none of these securities were past due at December 31, 2021. Management believes that the unrealized losses on these debt securities are a function of changes in investment spreads and interest rate movements and not changes in credit quality. Management expects to recover the entire amortized cost basis of these securities. Furthermore, the Corporation does not intend to sell these securities and it is likely that the Corporation will not be required to sell these securities before recovery of their cost basis, which may be maturity. Therefore, no ACL on securities was recorded at December 31, 2021.

Individual Name Issuer Trust Preferred Debt Securities

Included in debt securities in an unrealized loss position at December 31, 2021 were three trust preferred securities issued by three individual companies in the banking sector. Based on the information available through the filing date of this report, all individual name issuer trust preferred debt securities held in our portfolio continue to accrue interest and make payments as expected with no payment deferrals or defaults on the part of the issuers. Management reviewed the collectability of these securities taking into consideration such factors as the financial condition of the issuers, reported regulatory capital ratios of the issuers, credit ratings, including ratings in effect as of the reporting period date as well as credit rating changes between the reporting period date and the filing date of this report, and other information. As of December 31, 2021, there were two individual name issuer trust preferred debt securities with an amortized cost of $4.0 million and unrealized losses of $129 thousand that were rated below investment grade by S&P. We noted no additional downgrades to below investment grade between December 31, 2021 and the filing date of this report. Management believes the unrealized losses on these debt securities are primarily attributable to changes in the investment spreads and interest rates and not material changes in the credit quality of the issuers of the debt securities. Management expects to recover the entire amortized cost basis of these securities. Furthermore, the Corporation does not intend to sell these securities and it is likely that the Corporation will not be required to sell these securities before recovery of their cost basis, which may be maturity. Therefore, no ACL on securities was recorded at December 31, 2021.

Corporate Bonds

At December 31, 2021, the Corporation had four corporate bond holdings with unrealized losses totaling $850 thousand. These investment grade corporate bonds were issued by large corporations in the financial services industry. The issuers of these securities continue to make timely interest payments and none of these securities were

past due at December 31, 2021. Management reviewed the collectability of these securities taking into consideration such factors as the financial condition of the issuers, reported regulatory capital ratios of the issuers, credit ratings, including ratings in effect as of the reporting period date, as well as credit rating changes between the reporting period date and the filing date of this report, and other information. Management believes the unrealized losses on these debt securities are primarily attributable to changes in the investment spreads and interest rates and not changes in the credit quality of the issuers of the debt securities. Management expects to recover the entire amortized cost basis of these securities. Furthermore, the Corporation does not intend to sell these securities and it is likely that the Corporation will not be required to sell these securities before recovery of their cost basis, which may be maturity. Therefore, no allowance for credit losses was recorded at December 31, 2021.