Allowance for Credit Losses - Loans on Nonaccrual Status and Loans Past Due 90 Days or More and Still Accruing (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	$ 146,774	$ 54,057
End of Period Nonaccrual	66,291	146,774
Nonaccrual With No Related Allowance	37,469	71,410
Past Due 90+ Days Still Accruing		503
Interest Income Recognized on Nonaccrual	1,128	826
Commercial \| Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	101,070	25,356
End of Period Nonaccrual	31,488	101,070
Nonaccrual With No Related Allowance	28,046	60,401
Past Due 90+ Days Still Accruing		0
Interest Income Recognized on Nonaccrual	158	22
Commercial \| Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	16,985	10,911
End of Period Nonaccrual	15,239	16,985
Nonaccrual With No Related Allowance	5,707	6,436
Past Due 90+ Days Still Accruing		0
Interest Income Recognized on Nonaccrual	74	101
Commercial \| Commercial construction
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	384	737
End of Period Nonaccrual	2,471	384
Nonaccrual With No Related Allowance	2,020	285
Past Due 90+ Days Still Accruing		0
Interest Income Recognized on Nonaccrual	(28)	0
Commercial \| Business banking
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	17,122	9,863
End of Period Nonaccrual	9,641	17,122
Nonaccrual With No Related Allowance	1,696	3,890
Past Due 90+ Days Still Accruing		371
Interest Income Recognized on Nonaccrual	427	275
Consumer \| Consumer real estate
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	11,117	6,063
End of Period Nonaccrual	7,294	11,117
Nonaccrual With No Related Allowance	0	398
Past Due 90+ Days Still Accruing		132
Interest Income Recognized on Nonaccrual	496	423
Consumer \| Other consumer
Financing Receivable, Nonaccrual [Line Items]
Beginning of Period Nonaccrual	96	1,127
End of Period Nonaccrual	158	96
Nonaccrual With No Related Allowance	0	0
Past Due 90+ Days Still Accruing		0
Interest Income Recognized on Nonaccrual	$ 1	$ 4

Amount of interest income on financing receivable on nonaccrual status.

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Amount of financing receivable on nonaccrual status with no allowance for credit loss.

+ References

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Amount of financing receivable 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of financing receivable on nonaccrual status.

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