Amount excluding accrued interest, of allowance for credit loss on financing receivable.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Topic 326
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Amount excluding accrued interest, before allowance for credit loss, of financing receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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Loans and Allowance for Credit Losses - Schedule of Composition of Loans and Impact of Adoption (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 13,584,828		$ 13,786,479
Allowance for credit losses	(107,868)	$ (109,444)	(131,388)	$ (131,388)	$ (128,394)	$ (54,619)
Net loans	13,476,960		13,655,091
Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0
Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	13,584,828		13,786,479
Allowance for credit losses	(107,868)		(131,388)
Net loans	13,476,960		13,655,091
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,505,183		3,956,422
Allowance for credit losses	(26,160)	(25,731)	(30,567)	(28,393)	(29,618)	(21,359)
Commercial \| PPP Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	354,900		943,000
Commercial \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(192,390)
Commercial \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	3,312,793		3,757,700
Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,290,632		5,946,512
Allowance for credit losses	(65,097)	(65,469)	(75,810)	(75,912)	(71,069)	(20,535)
Commercial real estate \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(158,297)
Commercial real estate \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	6,132,335		5,774,811
BBCC
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses	(2,562)	(2,798)	(6,120)	(6,337)	(6,332)	(2,279)
BBCC \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	350,687
BBCC \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	350,687		370,423
Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,224,782		2,248,422
Allowance for credit losses	(9,526)	(10,419)	(12,608)	(13,924)	(14,244)	(2,299)
Residential real estate \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	0
Residential real estate \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	2,224,782		2,248,422
Consumer credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,564,231		1,635,123
Consumer credit \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	(1,564,231)
Indirect
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	860,785		913,902
Allowance for credit losses	(1,861)	(2,043)	(3,580)	(4,090)	(4,453)	(5,319)
Indirect \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	860,785
Indirect \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	860,785		913,902
Direct
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	149,124		164,807
Allowance for credit losses	(586)	(640)	(855)	(825)	(835)	(1,863)
Direct \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	149,124
Direct \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	149,124		164,807
Home equity
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	554,322		556,414
Allowance for credit losses	(2,076)	$ (2,344)	(1,848)	$ (1,907)	$ (1,843)	$ (965)
Home equity \| Segment Portfolio Reclassification
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	554,322
Home equity \| Segment Portfolio Reclassification, Adjusted Balance
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	554,322		556,414
Direct Finance Leases
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 26,000		$ 32,300