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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis The following tables present assets and liabilities measured at fair value on a recurring basis and reported on the consolidated balance sheets:
 September 30, 2022
 Level 1Level 2Level 3Total
 (in thousands)
Loans held for sale$ $14,411 $ $14,411 
Available for sale investment securities:
Equity securities    
U.S. Government securities218,184   218,184 
U.S. Government-sponsored agency securities 1,006  1,006 
State and municipal securities 1,038,185  1,038,185 
Corporate debt securities 399,615  399,615 
Collateralized mortgage obligations 142,401  142,401 
Residential mortgage-backed securities 214,252  214,252 
Commercial mortgage-backed securities 583,741  583,741 
Total available for sale investment securities218,184 2,379,200  2,597,384 
Other assets:
Investments held in Rabbi Trust22,933   22,933 
Derivative assets1,027 179,049  180,076 
Total assets$242,144 $2,572,660 $ $2,814,804 
Other liabilities:
Deferred compensation liabilities$22,933 $ $ $22,933 
Derivative liabilities1,006 314,438  315,444 
Total liabilities$23,939 $314,438 $ $338,377 

 December 31, 2021
 Level 1Level 2Level 3Total
 (in thousands)
Loans held for sale$— $35,768 $— $35,768 
Available for sale investment securities:
U.S. Government securities127,618 — — 127,618 
State and municipal securities— 1,188,670 — 1,188,670 
Corporate debt securities— 386,133 — 386,133 
Collateralized mortgage obligations— 209,359 — 209,359 
Residential mortgage-backed securities— 229,795 — 229,795 
Commercial mortgage-backed securities— 971,148 — 971,148 
Auction rate securities— — 74,667 74,667 
Total available for sale investment securities127,618 2,985,105 74,667 3,187,390 
Other assets:
Investments held in Rabbi Trust28,619 — — 28,619 
Derivative assets298 160,945 — 161,243 
Total assets$156,535 $3,181,818 $74,667 $3,413,020 
Other liabilities:
Deferred compensation liabilities$28,619 $— $— $28,619 
Derivative liabilities291 86,110 — 86,401 
Total liabilities$28,910 $86,110 $— $115,020 
Schedule of Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs
The following table presents the changes in the Corporation's available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3):
ARCs
Three months ended September 30, 2022(in thousands)
Balance at June 30, 2022$ 
Sales  
Unrealized adjustment to fair value (1)
 
Balance at September 30, 2022$ 
Three months ended September 30, 2021
Balance at June 30, 2021$74,834 
Unrealized adjustment to fair value (1)
299 
Balance at September 30, 2021$75,133 
Nine months ended September 30, 2022
Balance at December 31, 2021$74,667 
Sales(74,823)
Unrealized adjustment to fair value (1)
156 
Balance at September 30, 2022$ 
Nine months ended September 30, 2021
Balance at December 31, 2020$98,206 
Sales(24,619)
Unrealized adjustment to fair value (1)
1,546 
Balance at September 30, 2021$75,133 
(1) ARCs are classified as available for sale investment securities. As such, the unrealized adjustment to fair value was recorded as an unrealized holding gain (loss) and included as a component of "AFS at estimated fair value" on the consolidated balance sheets.
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis The following table presents Level 3 financial assets measured at fair value on a nonrecurring basis:
 September 30, 2022December 31, 2021
 (in thousands)
Loans, net$140,763 $118,458 
OREO5,877 1,817 
MSRs (1)
51,072 35,393 
Total assets$197,712 $155,668 
(1) Amounts shown are estimated fair value. MSRs are recorded on the Corporation's consolidated balance sheets at the lower of amortized cost or fair value. See "Note 6 - Mortgage Servicing Rights" for additional information.
Details of Book Value and Fair Value of Financial Instruments
The following tables detail the book values and the estimated fair values of the Corporation's financial instruments as of September 30, 2022 and December 31, 2021.
 September 30, 2022
Estimated Fair Value
Carrying AmountLevel 1Level 2Level 3Total
(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents$528,715 $528,715 $ $ $528,715 
FRB and FHLB stock81,914  81,914  81,914 
Loans held for sale 14,411  14,411  14,411 
AFS securities 2,597,384 218,184 2,379,200  2,597,384 
HTM securities1,339,310  1,141,710  1,141,710 
Loans, net19,428,361   18,817,452 18,817,452 
Accrued interest receivable72,821 72,821   72,821 
Other assets 653,358 417,360 179,049 56,949 653,358 
FINANCIAL LIABILITIES  
Demand and savings deposits$19,612,499 $19,612,499 $ $ $19,612,499 
Brokered deposits226,883 206,883 26,216  233,099 
Time deposits1,537,172  1,521,484  1,521,484 
Accrued interest payable5,739 5,739   5,739 
Federal funds purchased136,000 136,000   136,000 
Federal Home Loan Bank advances265,500 265,500   265,500 
Senior debt and subordinated debt539,461  455,833  455,833 
Other borrowings483,720 482,449 1,263  483,712 
Other liabilities 500,827 170,315 314,438 16,074 500,827 
December 31, 2021
Estimated Fair Value
Carrying AmountLevel 1Level 2Level 3Total
(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents$1,638,614 $1,638,614 $— $— $1,638,614 
FRB and FHLB stock57,635 — 57,635 — 57,635 
Loans held for sale35,768 — 35,768 — 35,768 
AFS securities3,187,390 127,618 2,985,105 74,667 3,187,390 
HTM securities980,384 — 965,867 — 965,867 
Loans, net18,076,349 — — 17,519,497 17,519,497 
Accrued interest receivable57,451 57,451 — — 57,451 
Other assets565,491 367,336 160,945 37,210 565,491 
FINANCIAL LIABILITIES
Demand and savings deposits$19,594,497 $19,594,497 $— $— $19,594,497 
Brokered deposits251,526 231,526 20,603 — 252,129 
Time deposits1,727,476 — 1,730,673 — 1,730,673 
Accrued interest payable7,000 7,000 — — 7,000 
Senior debt and subordinated debt620,406 — 604,780 — 604,780 
Other borrowings417,703 416,764 939 — 417,703 
Other liabilities288,862 188,219 86,110 14,533 288,862