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INVESTMENT SECURITIES
12 Months Ended
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES INVESTMENT SECURITIES
The following table presents the amortized cost and fair value of the investment securities portfolio as of the dates indicated:
($ in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
December 31, 2022
Securities held-to-maturity:
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities$153,033 $— $(29,807)$123,226 
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations61,404 — (11,946)49,458 
Municipal securities114,204 — (24,428)89,776 
Total securities held-to-maturity$328,641 $ $(66,181)$262,460 
Securities available-for-sale:
SBA loan pool securities$11,241 $— $(54)$11,187 
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities40,431 — (225)40,206 
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations99,075 — (5,884)93,191 
Non-agency residential mortgage-backed securities90,832 — (10,340)80,492 
Collateralized loan obligations492,203 — (15,600)476,603 
Corporate debt securities175,781 32 (9,195)166,618 
Total securities available-for-sale$909,563 $32 $(41,298)$868,297 
December 31, 2021
Securities available-for-sale:
SBA loan pool securities$14,679 $— $(88)$14,591 
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities190,382 2,898 $(1,311)191,969 
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations242,458 1,171 (2,088)241,541 
Municipal securities117,913 2,641 (1,539)119,015 
Non-agency residential mortgage-backed securities56,014 11 — 56,025 
Collateralized loan obligations521,275 — (2,311)518,964 
Corporate debt securities162,002 11,603 (7)173,598 
Total securities available-for-sale$1,304,723 $18,324 $(7,344)$1,315,703 

During the first quarter of 2022, certain longer-duration fixed-rate mortgage-backed securities and municipal securities with an amortized cost basis of $346.0 million were transferred from the available-for-sale portfolio to the held-to-maturity portfolio. At the time of the transfer, the securities had an unrealized gross loss of $16.6 million, which became part of the securities' amortized cost basis. This amount, along with the unrealized loss included in accumulated other comprehensive income, is then amortized over the life of the security as an adjustment to its yield using the interest method. As a result, there is no impact on the consolidated statements of operations.
At December 31, 2022, our investment securities portfolio consisted of agency securities, municipal securities, mortgage-backed securities, collateralized loan obligations, and corporate debt securities. The expected maturities of these types of securities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
There was no allowance for credit losses for debt securities held-to-maturity and available-for-sale as of December 31, 2022 and 2021. We do not consider unrealized losses on these securities to be attributable to credit-related factors, as the unrealized losses have occurred as a result of changes in non-credit related factors such as interest rates, market spreads, and market conditions subsequent to purchase.
Accrued interest receivable on debt securities held-to-maturity and available-for-sale totaled $9.2 million and $4.7 million at December 31, 2022 and December 31, 2021, and is included within other assets in the accompanying consolidated statements of financial condition.
At December 31, 2022 and 2021, there were no holdings of any one issuer, other than the U.S. government agency and sponsored enterprises, in an amount greater than 10% of our stockholders’ equity.

Pledged Securities
Investment securities with carrying values of $356.5 million and $28.9 million as of December 31, 2022 and 2021 were pledged to secure FHLB advances, public deposits and for other purposes as required or permitted by law.

Securities Available-for-Sale
The following table presents proceeds from sales and calls of securities available-for-sale and the associated gross gains and losses realized through earnings upon the sales and calls of securities available-for-sale for the periods indicated:
Year Ended December 31,
($ in thousands)202220212020
Gross realized gains on sales and calls$209 $— $2,011 
Gross realized losses on sales and calls(7,901)— — 
Net realized (losses) gains on sales and calls$(7,692)$ $2,011 
Proceeds from sales and calls$167,295 $191,230 $68,829 

The following table summarizes the investment securities available-for-sale with unrealized losses by security type and length of time in a continuous, unrealized loss position as of the dates indicated:
Less Than 12 Months12 Months or LongerTotal
($ in thousands)Fair ValueGross Unrealized LossesFair ValueGross Unrealized LossesFair ValueGross Unrealized Losses
December 31, 2022
Securities available-for-sale:
SBA loan pool securities
$2,260 $(3)$8,927 $(51)$11,187 $(54)
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
40,206 (225)— — 40,206 (225)
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
76,441 (2,533)16,750 (3,351)93,191 (5,884)
Non-agency residential mortgage-backed securities
80,492 (10,340)— — 80,492 (10,340)
Collateralized loan obligations
235,936 (7,492)240,667 (8,108)476,603 (15,600)
Corporate debt securities
159,492 (8,374)4,180 (821)163,672 (9,195)
Total securities available-for-sale
$594,827 $(28,967)$270,524 $(12,331)$865,351 $(41,298)
December 31, 2021
Securities available-for-sale:
SBA loan pool securities$— $— $14,591 $(88)$14,591 $(88)
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
67,588 (1,311)— — 67,588 (1,311)
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
85,290 (1,184)17,754 (904)103,044 (2,088)
Municipal securities44,748 (919)10,762 (620)55,510 (1,539)
Collateralized loan obligations
81,962 (38)253,002 (2,273)334,964 (2,311)
Corporate debt securities
4,993 (7)— — 4,993 (7)
Total securities available-for-sale
$284,581 $(3,459)$296,109 $(3,885)$580,690 $(7,344)
At December 31, 2022, our securities available-for-sale portfolio consisted of 77 securities, of which 76 securities were in an unrealized loss position. At December 31, 2021, our securities available-for-sale portfolio consisted of 119 securities, of which 46 securities were in an unrealized loss position.
During the years ended December 31, 2022, 2021 and 2020, there was no provision for credit losses related to securities available-for-sale. We monitor our securities portfolio to ensure it has adequate credit support. We consider the lowest credit rating for identification of credit impairment for collateralized loan obligations and other securities. The decline in fair value of our securities since acquisition was attributable to a combination of rising interest rates and general volatility in credit market conditions. We do not currently intend to sell any of the securities in an unrealized loss position and further believe, it is more likely than not, that we will not be required to sell these securities before their anticipated recovery. As of December 31, 2022, all of our collateralized loan obligations investment securities in an unrealized loss position received an investment grade credit rating.
The following table presents the amortized cost and fair value of the investment securities portfolio, based on the earlier of contractual maturity dates or next repricing date, as of December 31, 2022:
Held-to-MaturityAvailable-for-Sale
($ in thousands)Amortized CostFair ValueAmortized CostFair Value
Earlier of maturity or next repricing date:
Within one year$— $— $509,099 $493,321 
One to five years— — 171,497 161,681 
Five to ten years28,675 24,039 42,590 37,796 
Greater than ten years299,966 238,421 186,377 175,499 
Total$328,641 $262,460 $909,563 $868,297 
Contractual maturities may not reflect the actual maturities of the investments. The average lives for mortgage-backed securities and collateralized loan obligations will likely be shorter than their contractual maturities due to prepayments and amortization.
The following table presents the fair value and weighted average yields using amortized cost of the securities held-to-maturity portfolio as of December 31, 2022, based on the earlier of contractual maturity dates or next repricing dates:
One year or lessMore than One Year through Five YearsMore than Five Years through Ten YearsMore than Ten YearsTotal
($ in thousands)Fair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average Yield
Securities held-to-maturity:
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities$— — %$— — %$7,987 2.52 %$115,239 2.70 %$123,226 2.69 %
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations— — %— — %— — %49,458 2.64 %49,458 2.64 %
Municipal securities— — %— — %16,052 2.19 %73,724 2.71 %89,776 2.62 %
Total securities held-to-maturity$  %$  %$24,039 2.29 %$238,421 2.69 %$262,460 2.65 %

The following table presents the fair value and weighted average yields using amortized cost of the securities available-for-sale portfolio, as of December 31, 2022, based on the earlier of contractual maturity dates or next repricing dates:
One year or lessMore than One Year through Five YearsMore than Five Years through Ten YearsMore than Ten YearsTotal
($ in thousands)Fair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average YieldFair
Value
Weighted-Average Yield
Securities available-for-sale:
SBA loan pool securities
$11,187 3.18 %$— — %$— — %$— — %$11,187 3.18 %
U.S. government agency and U.S. government sponsored enterprise residential mortgage-backed securities
— — %— — %— — %40,206 5.59 %40,206 5.59 %
U.S. government agency and U.S. government sponsored enterprise collateralized mortgage obligations
5,531 4.65 %7,941 3.24 %24,918 2.76 %54,801 4.80 %93,191 4.04 %
Non-agency residential mortgage-backed securities
— — %— — %— — %80,492 3.68 %80,492 3.68 %
Collateralized loan obligations
476,603 5.85 %— — %— — %— — %476,603 5.85 %
Corporate debt securities
— — %153,740 4.82 %12,878 5.73 %— — %166,618 4.89 %
Total securities available-for-sale
$493,321 5.78 %$161,681 4.74 %$37,796 3.69 %$175,499 4.42 %$868,297 5.20 %