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Fair Value Measurements (Tables)
6 Months Ended
Jun. 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:
 June 30, 2022
 Level 1Level 2Level 3Total
 (in thousands)
Loans held for sale$ $17,528 $ $17,528 
Available for sale investment securities:
Equity securities    
U.S. Government securities371,266   371,266 
State and municipal securities 1,083,477  1,083,477 
Corporate debt securities 393,561  393,561 
Collateralized mortgage obligations 148,103  148,103 
Residential mortgage-backed securities 195,359  195,359 
Commercial mortgage-backed securities 587,072  587,072 
Total available for sale investment securities371,266 2,407,572  2,778,838 
Other assets:
Investments held in Rabbi Trust23,669   23,669 
Derivative assets813 93,045  93,858 
Total assets$395,748 $2,518,145 $ $2,913,893 
Other liabilities:
Deferred compensation liabilities$23,669 $ $ $23,669 
Derivative liabilities765 168,272  169,037 
Total liabilities$24,434 $168,272 $ $192,706 
 December 31, 2021
 Level 1Level 2Level 3Total
 (in thousands)
Loans held for sale$— $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 $— $115,020 
Schedule of Changes in Assets and Liabilities Measured at Fair Value on a Recurring Basis using Level 3 Inputs
The following table presents the changes in the Corporation's available for sale investment securities measured at fair value on a recurring basis using unobservable inputs (Level 3):
ARCs
Three months ended June 30, 2022(in thousands)
Balance at March 31, 2022$ 
Sales  
Unrealized adjustment to fair value (1)
 
Balance at June 30, 2022$ 
Three months ended June 30, 2021
Balance at March 31, 2021$76,204 
Unrealized adjustment to fair value (1)
(1,370)
Balance at June 30, 2021$74,834 
Six months ended June 30, 2022
Balance at December 31, 2021$74,667 
Sales(74,823)
Unrealized adjustment to fair value (1)
156 
Balance at June 30, 2022$ 
Six months ended June 30, 2021
Balance at December 31, 2020$98,206 
Sales(24,619)
Unrealized adjustment to fair value (1)
1,247 
Balance at June 30, 2021$74,834 
(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:
 June 30, 2022December 31, 2021
 (in thousands)
Loans, net$137,267 $118,458 
OREO4,786 1,817 
MSRs (1)
49,804 35,393 
Total assets$191,857 $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 5 - 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 June 30, 2022 and December 31, 2021.
 June 30, 2022
Estimated Fair Value
Carrying AmountLevel 1Level 2Level 3Total
(in thousands)
FINANCIAL ASSETS
Cash and cash equivalents$449,674 $449,674 $ $ $449,674 
FRB and FHLB stock62,146  62,146  62,146 
Federal funds sold30,500 30,500   30,500 
Loans held for sale 17,528  17,528  17,528 
AFS securities 2,778,838 371,266 2,407,572  2,778,838 
HTM securities1,338,963  1,215,325  1,215,325 
Loans, net18,672,386   17,993,585 17,993,585 
Accrued interest receivable64,457 64,457   64,457 
Other assets 505,136 357,501 93,045 54,590 505,136 
FINANCIAL LIABILITIES  
Demand and savings deposits$19,340,633 $19,340,633 $ $ $19,340,633 
Brokered deposits243,172 223,172 20,167  243,339 
Time deposits1,560,061  1,552,555  1,552,555 
Accrued interest payable6,010 6,010   6,010 
Short-term borrowings456,185 456,185   456,185 
Long-term borrowings557,130  490,331  490,331 
Other liabilities 343,794 161,198 168,272 14,324 343,794 
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 
Short-term borrowings416,764 416,764 — — 416,764 
Long-term borrowings621,345 — 605,719 — 605,719 
Other liabilities288,862 188,219 86,110 14,533 288,862