Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	$ 221,784	$ 91,202
Measurement of fair value on a recurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	8,284,723	6,720,001
Loans held-for-sale	221,784	91,202
Measurement of fair value on a recurring basis \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	0	0
Loans held-for-sale	0	0
Measurement of fair value on a recurring basis \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	8,284,219	6,719,568
Loans held-for-sale	221,784	91,202
Measurement of fair value on a recurring basis \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	504	433
Loans held-for-sale	0	0
Carrying Amount \| Measurement of fair value on a recurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	244	108,584
Net loans and leases	31,164,287	31,699,285
Securitization receivable	19,949	19,689
Deferred fees on commitments to extend credit	20,002	19,300
Total financial instrument assets	31,709,277	32,428,743
Deposits	5,524,381	7,455,556
Long-term borrowings	1,374,732	2,354,448
Deferred fees on standby letters of credit		56
Total financial instrument liabilities	6,899,113	9,810,060
Carrying Amount \| Measurement of fair value on a recurring basis \| FHLB and FRB stocks
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	320,436	442,440
Carrying Amount \| Measurement of fair value on a recurring basis \| Investment securities held-to-maturity
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	184,359	139,445
Estimated Fair Value \| Measurement of fair value on a recurring basis
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	248	112,525
Net loans and leases	31,434,749	31,804,513
Securitization receivable	19,916	19,466
Deferred fees on commitments to extend credit	20,002	19,300
Total financial instrument assets	31,988,905	32,543,088
Deposits	5,534,751	7,460,577
Long-term borrowings	1,416,355	2,368,469
Deferred fees on standby letters of credit		56
Total financial instrument liabilities	6,951,106	9,829,102
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	0	0
Net loans and leases	0	0
Securitization receivable	0	0
Deferred fees on commitments to extend credit	0	0
Total financial instrument assets	0	0
Deposits	0	0
Long-term borrowings	0	0
Deferred fees on standby letters of credit		0
Total financial instrument liabilities	0	0
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	0	110,252
Net loans and leases	0	0
Securitization receivable	0	0
Deferred fees on commitments to extend credit	20,002	19,300
Total financial instrument assets	530,579	713,160
Deposits	5,534,751	7,460,577
Long-term borrowings	1,416,355	2,368,469
Deferred fees on standby letters of credit		56
Total financial instrument liabilities	6,951,106	9,829,102
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Loans held-for-sale	248	2,273
Net loans and leases	31,434,749	31,804,513
Securitization receivable	19,916	19,466
Deferred fees on commitments to extend credit	0	0
Total financial instrument assets	31,458,326	31,829,928
Deposits	0	0
Long-term borrowings	0	0
Deferred fees on standby letters of credit		0
Total financial instrument liabilities	0	0
Estimated Fair Value \| Measurement of fair value on a recurring basis \| FHLB and FRB stocks
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	320,436	442,440
Estimated Fair Value \| Measurement of fair value on a recurring basis \| FHLB and FRB stocks \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	0	0
Estimated Fair Value \| Measurement of fair value on a recurring basis \| FHLB and FRB stocks \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	320,436	442,440
Estimated Fair Value \| Measurement of fair value on a recurring basis \| FHLB and FRB stocks \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	0	0
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Investment securities held-to-maturity
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	193,554	144,844
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Investment securities held-to-maturity \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	0	0
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Investment securities held-to-maturity \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	190,141	141,168
Estimated Fair Value \| Measurement of fair value on a recurring basis \| Investment securities held-to-maturity \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Investment securities available-for-sale	$ 3,413	$ 3,676

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Deferred Fees, Liability, Fair Value Disclosure

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Represents the fair value of various categories of unpaid commercial loans and other financial instruments.

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- Definition

Loans And Leases Receivable, Net, Fair Value Disclosure

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- Definition

Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

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