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Investment Securities Available for Sale, at Fair Value (Tables)
3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities Reconciliation The Company's investment securities available for sale consisted of the following as of March 31, 2023 and December 31, 2022, respectively (dollar amounts in thousands):
 March 31, 2023December 31, 2022
Amortized CostUnrealizedFair ValueAmortized CostUnrealizedFair Value
 GainsLossesGainsLosses
Fair Value Option
Agency RMBS$106,116 $1,084 $— $107,200 $— $— $— $— 
Non-Agency RMBS44,483 8,878 (13,434)39,927 48,958 9,436 (13,469)44,925 
CMBS32,025 — (1,357)30,668 32,033 — (1,900)30,133 
ABS
683 — (191)492 797 59 — 856 
Total investment securities available for sale - fair value option
183,307 9,962 (14,982)178,287 81,788 9,495 (15,369)75,914 
CECL Securities
Non-Agency RMBS25,663 — (1,379)24,284 25,616 — (1,971)23,645 
Total investment securities available for sale - CECL Securities
25,663 — (1,379)24,284 25,616 — (1,971)23,645 
Total
$208,970 $9,962 $(16,361)$202,571 $107,404 $9,495 $(17,340)$99,559 
Schedule of Investments Securities Sold The following table summarizes our investment securities sold during the three months ended March 31, 2022 (dollar amounts in thousands):
Three Months Ended March 31, 2022
Sales Proceeds Realized GainsRealized LossesNet Realized Gains (Losses)
Non-Agency RMBS$24,374 $374 $— $374 
Total $24,374 $374 $— $374 
Schedule of Weighted Average Lives of Investment Securities
The following table sets forth the weighted average lives of our investment securities available for sale as of March 31, 2023 and December 31, 2022, respectively (dollar amounts in thousands):
Weighted Average LifeMarch 31, 2023December 31, 2022
0 to 5 years$35,025 $39,655 
Over 5 to 10 years152,858 46,558 
10+ years14,688 13,346 
Total$202,571 $99,559 
Investment Securities Available-for-sale in an Unrealized Loss Position
The following table presents the Company's CECL Securities in an unrealized loss position with no credit losses reported, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2023 and December 31, 2022, respectively (dollar amounts in thousands):

March 31, 2023Less than 12 monthsGreater than 12 monthsTotal
Carrying
Value
Gross
Unrealized
Losses
Carrying
Value
Gross
Unrealized
Losses
Carrying
Value
Gross
Unrealized
Losses
Non-Agency RMBS$15,997 $(533)$8,287 $(846)$24,284 $(1,379)
Total
$15,997 $(533)$8,287 $(846)$24,284 $(1,379)

December 31, 2022Less than 12 monthsGreater than 12 monthsTotal
 Carrying
Value
Gross
Unrealized
Losses
Carrying
Value
Gross
Unrealized
Losses
Carrying
Value
Gross
Unrealized
Losses
Non-Agency RMBS$23,609 $(1,966)$36 $(5)$23,645 $(1,971)
Total $23,609 $(1,966)$36 $(5)$23,645 $(1,971)