XML 54 R33.htm IDEA: XBRL DOCUMENT v3.22.0.1
Securities (Tables)
 12 Months Ended
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]  
Schedule of amortized cost, gross unrealized gains, gross unrealized losses and fair value by major categories of AFS debt securities
The following tables present the amortized cost, gross unrealized gains and losses, and fair value by major categories of AFS debt securities as of December 31, 2021 and 2020:
($ in thousands)December 31, 2021
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
AFS debt securities:
U.S. Treasury securities$1,049,238 $130 $(16,687)$1,032,681 
U.S. government agency and U.S. government-sponsored enterprise debt securities1,333,984 2,697 (34,710)1,301,971 
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities1,242,043 15,791 (28,854)1,228,980 
Residential mortgage-backed securities2,968,789 8,629 (49,135)2,928,283 
Municipal securities519,381 10,065 (6,288)523,158 
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities498,920 3,000 (5,477)496,443 
Residential mortgage-backed securities889,937 971 (8,977)881,931 
Corporate debt securities657,516 8,738 (16,589)649,665 
Foreign government bonds260,447 767 (3,481)257,733 
Asset-backed securities74,674 185 (301)74,558 
CLOs592,250 52 (2,352)589,950 
Total AFS debt securities$10,087,179 $51,025 $(172,851)$9,965,353 
($ in thousands)December 31, 2020
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
AFS debt securities:
U.S. Treasury securities$50,310 $451 $— $50,761 
U.S. government agency and U.S. government-sponsored enterprise debt securities806,814 8,765 (1,260)814,319 
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities1,125,174 34,306 (5,710)1,153,770 
Residential mortgage-backed securities1,634,553 27,952 (1,611)1,660,894 
Municipal securities382,573 13,588 (88)396,073 
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities234,965 6,107 (1,230)239,842 
Residential mortgage-backed securities288,520 1,761 (506)289,775 
Corporate debt securities406,323 3,493 (3,848)405,968 
Foreign government bonds183,828 163 (1,460)182,531 
Asset-backed securities63,463 10 (242)63,231 
CLOs294,000 — (6,506)287,494 
Total AFS debt securities$5,470,523 $96,596 $(22,461)$5,544,658 
Schedule of fair value and associated gross unrealized losses of AFS debt securities
The following tables present the fair value and the associated gross unrealized losses of the Company’s AFS debt securities, aggregated by investment category and the length of time that the securities have been in a continuous unrealized loss position, as of December 31, 2021 and 2020:
($ in thousands)December 31, 2021
Less Than 12 Months12 Months or MoreTotal
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
AFS debt securities:
U.S. Treasury securities$935,776 $(14,689)$47,881 $(1,998)$983,657 $(16,687)
U.S. government agency and U.S. government-sponsored enterprise debt securities773,647 (18,000)402,907 (16,710)1,176,554 (34,710)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities440,734 (13,589)257,745 (15,265)698,479 (28,854)
Residential mortgage-backed securities2,138,542 (37,691)330,522 (11,444)2,469,064 (49,135)
Municipal securities177,065 (5,682)17,003 (606)194,068 (6,288)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities301,925 (4,158)40,013 (1,319)341,938 (5,477)
Residential mortgage-backed securities707,792 (8,966)6,431 (11)714,223 (8,977)
Corporate debt securities183,916 (3,084)251,494 (13,505)435,410 (16,589)
Foreign government bonds27,097 (5)133,279 (3,476)160,376 (3,481)
Asset-backed securities24,885 (301)— — 24,885 (301)
CLOs221,586 (64)291,712 (2,288)513,298 (2,352)
Total AFS debt securities$5,932,965 $(106,229)$1,778,987 $(66,622)$7,711,952 $(172,851)
($ in thousands)December 31, 2020
Less Than 12 Months12 Months or MoreTotal
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
AFS debt securities:
U.S. Treasury securities$352,521 $(1,260)$— $— $352,521 $(1,260)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities:
Commercial mortgage-backed securities292,596 (5,656)3,543 (54)296,139 (5,710)
Residential mortgage-backed securities342,561 (1,611)— — 342,561 (1,611)
Municipal securities24,529 (88)— — 24,529 (88)
Non-agency mortgage-backed securities:
Commercial mortgage-backed securities58,738 (1,230)7,920 — 66,658 (1,230)
Residential mortgage-backed securities90,156 (506)— — 90,156 (506)
Corporate debt securities251,674 (3,645)9,798 (203)261,472 (3,848)
Foreign government bonds106,828 (1,460)— — 106,828 (1,460)
Asset-backed securities— — 34,104 (242)34,104 (242)
CLOs— — 287,494 (6,506)287,494 (6,506)
Total AFS debt securities$1,519,603 $(15,456)$342,859 $(7,005)$1,862,462 $(22,461)
Schedule of the gross realized gains and tax expense related to the sales of AFS debt securities
The following table presents gross realized gains and tax expense related to the sales of AFS debt securities for the years ended December 31, 2021, 2020 and 2019:
($ in thousands)Year Ended December 31,
202120202019
Gross realized gains$1,568 $12,299 $3,930 
Related tax expense$464 $3,636 $1,162 
Schedule of contractual maturities of AFS debt securities
The following table presents the contractual maturities of AFS debt securities as of December 31, 2021. Expected maturities will differ from contractual maturities on certain securities as the issuers and borrowers of the underlying collateral may have the right to call or prepay obligations with or without prepayment penalties.
($ in thousands)Amortized CostFair Value
Due within one year$1,482,716 $1,440,069 
Due after one year through five years1,191,837 1,189,880 
Due after five years through ten years1,413,217 1,408,494 
Due after ten years5,999,409 5,926,910 
Total AFS debt securities$10,087,179 $9,965,353 
Schedule of restricted equity securities
The following table presents the restricted equity securities on the Consolidated Balance Sheet as of December 31, 2021 and 2020:
($ in thousands)December 31,
20212020
FRBSF stock
$60,184 $59,249 
FHLB stock17,250 23,797 
Total restricted equity securities$77,434 $83,046