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Allowance for Credit Losses (Schedule Of Financial Difficulty and Modification) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 110,716	$ 138,114
% of total class of financing receivable	0.29%	0.37%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 19,169	$ 3,712
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	110,716	138,114
Financing Receivable, Modified in Period, Nonaccrual, Amount	8,978	3,462
Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	92,016	128,915
Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	2,298	181
60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	2,956	3,367
90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	4,468	2,189
Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	4,691	1,043
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	2,752
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	37,438	52,586
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,945	1,702
Other -Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	31,078	77,384
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	9,903	977
Combination - Interest Rate Reduction and Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	34,597
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,305
Term Extension and Other-than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	340	7,101
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,805	1,033
Interest Rate Reduction and Other -Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	2,572
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,459
Commercial real estate | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 7,387	$ 32,461
% of total class of financing receivable	0.12%	0.50%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 1,305
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	7,387	$ 32,461
Financing Receivable, Modified in Period, Nonaccrual, Amount	0	0
Commercial real estate | Non-owner occupied term, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	7,387	30,338
Commercial real estate | Non-owner occupied term, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial real estate | Non-owner occupied term, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	2,123
Commercial real estate | Non-owner occupied term, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial real estate | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 4,657	$ 1,741
% of total class of financing receivable	0.09%	0.03%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 2,752
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	4,657	$ 1,741
Financing Receivable, Modified in Period, Nonaccrual, Amount	3,280	666
Commercial real estate | Owner occupied term, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	1,377	1,075
Commercial real estate | Owner occupied term, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial real estate | Owner occupied term, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial real estate | Owner occupied term, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial real estate | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 1,989
% of total class of financing receivable	0.10%
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	$ 1,989
Financing Receivable, Modified in Period, Nonaccrual, Amount	0
Commercial real estate | Construction & development, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	1,989
Commercial real estate | Construction & development, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0
Commercial real estate | Construction & development, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0
Commercial real estate | Construction & development, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0
Commercial real estate | Interest Rate Reduction | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 0	0
Financing receivable, modified, weighted average interest rate decrease from modification	0.00%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial real estate | Interest Rate Reduction | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 3,708	$ 666
Financing receivable, modified, weighted average interest rate decrease from modification	3.71%	4.00%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 2,752
Commercial real estate | Interest Rate Reduction | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 0
Financing receivable, modified, weighted average interest rate decrease from modification	1.00%
Commercial real estate | Term Extension | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 94	$ 32,461
Financing receivable, modified, weighted average term increase from modification	6 months
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial real estate | Term Extension | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 215	507
Financing receivable, modified, weighted average term increase from modification	2 years 10 months 24 days
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial real estate | Term Extension | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 0
Financing receivable, modified, weighted average term increase from modification	7 months
Commercial real estate | Other -Than-Insignificant Payment Delay | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 7,293	0
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	2,048
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Other -Than-Insignificant Payment Delay | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	734	568
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	51	22
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Other -Than-Insignificant Payment Delay | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	0
Commercial real estate | Combination - Interest Rate Reduction and Term Extension | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,305
Commercial real estate | Combination - Interest Rate Reduction and Term Extension | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Combination - Interest Rate Reduction and Term Extension | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	1,989
Commercial real estate | Term Extension and Other-than-Insignificant Payment Delay | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Term Extension and Other-than-Insignificant Payment Delay | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Term Extension and Other-than-Insignificant Payment Delay | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Commercial real estate | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Non-owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Owner occupied term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial real estate | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Construction & development, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Commercial | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 11,065	$ 4,786
% of total class of financing receivable	0.20%	0.09%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 1,459
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	11,065	$ 4,786
Financing Receivable, Modified in Period, Nonaccrual, Amount	4,868	1,002
Commercial | Term, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	6,197	3,784
Commercial | Term, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial | Term, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial | Term, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 55,407	$ 43,956
% of total class of financing receivable	2.00%	1.81%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 162	$ 1,422
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	55,407	43,956
Financing Receivable, Modified in Period, Nonaccrual, Amount	581	1,693
Commercial | Lines of credit & other, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	51,811	42,263
Commercial | Lines of credit & other, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	2,048	0
Commercial | Lines of credit & other, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	967	0
Commercial | Lines of credit & other, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Commercial | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 2,273	$ 1,495
% of total class of financing receivable	0.14%	0.09%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 387	$ 280
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	2,273	1,495
Financing Receivable, Modified in Period, Nonaccrual, Amount	249	101
Commercial | Leases & equipment finance, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	1,567	915
Commercial | Leases & equipment finance, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	250	181
Commercial | Leases & equipment finance, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	207	119
Commercial | Leases & equipment finance, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	179
Commercial | Interest Rate Reduction | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 0	$ 377
Financing receivable, modified, weighted average interest rate decrease from modification	2.52%	4.15%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial | Interest Rate Reduction | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 983	$ 0
Financing receivable, modified, weighted average interest rate decrease from modification	7.59%	0.00%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial | Interest Rate Reduction | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	$ 0
Financing receivable, modified, weighted average interest rate decrease from modification		0.00%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Term Extension | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 4,210	$ 4,409
Financing receivable, modified, weighted average term increase from modification	11 months	3 months
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Commercial | Term Extension | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 23,040	$ 13,152
Financing receivable, modified, weighted average term increase from modification	9 months	11 months
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 162	$ 1,422
Commercial | Term Extension | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 2,273	$ 1,495
Financing receivable, modified, weighted average term increase from modification	11 months	8 months
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 387	$ 280
Commercial | Other -Than-Insignificant Payment Delay | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	3,913	0
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	535	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Other -Than-Insignificant Payment Delay | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	157	30,804
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	32	30,080
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0	0
Commercial | Other -Than-Insignificant Payment Delay | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0	0
Commercial | Combination - Interest Rate Reduction and Term Extension | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	370
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Combination - Interest Rate Reduction and Term Extension | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	31,227
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Combination - Interest Rate Reduction and Term Extension | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Term Extension and Other-than-Insignificant Payment Delay | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Term Extension and Other-than-Insignificant Payment Delay | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0	0
Commercial | Term Extension and Other-than-Insignificant Payment Delay | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0	0
Commercial | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	2,572
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,459
Commercial | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Lines of credit & other, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Commercial | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Leases & equipment finance, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Residential | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 27,938	$ 53,675
% of total class of financing receivable	0.47%	0.87%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 13,104	$ 2,010
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	27,938	53,675
Financing Receivable, Modified in Period, Nonaccrual, Amount	0	0
Residential | Mortgage, net | Current and Other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	21,688	50,540
Residential | Mortgage, net | Greater than 30 to 59 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	0	0
Residential | Mortgage, net | 60 to 89 Days Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	1,782	1,125
Residential | Mortgage, net | 90 Days or More and Accruing (2)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months	4,468	2,010
Residential | Interest Rate Reduction | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 0	$ 0
Financing receivable, modified, weighted average interest rate decrease from modification	7.54%	0.00%
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Residential | Term Extension | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	$ 7,606	$ 562
Financing receivable, modified, weighted average term increase from modification	7 years	11 years 10 months 24 days
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 1,396	$ 0
Residential | Other -Than-Insignificant Payment Delay | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	18,981	46,012
Financing Receivable, Excluding Accrued Interest, Modified, Increase (Decrease) from Modification	1,545	3,391
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	9,903	977
Residential | Combination - Interest Rate Reduction and Term Extension | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	1,011
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	0
Residential | Term Extension and Other-than-Insignificant Payment Delay | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	340	7,101
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	1,805	$ 1,033
Residential | Interest Rate Reduction and Other -Than-Insignificant Payment Delay | Mortgage, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings, net of deferred fees and costs	0
Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default	$ 0
Owner occupied term, net | Term Extension | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, weighted average term increase from modification		2 months
Non-owner occupied term, net | Interest Rate Reduction | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, weighted average interest rate decrease from modification		0.00%
Non-owner occupied term, net | Term Extension | Term, net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, weighted average term increase from modification		1 year 4 months 24 days

X

- Definition

Financing Receivable, Excluding Accrued Interest, Modified, after 12 Months, Nonaccrual

+ References

No definition available.

+ Details

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Namespace Prefix:	colb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of increase (decrease) in amortized cost excluding accrued interest, of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

Name:	us-gaap_FinancingReceivableExcludingAccruedInterestModifiedIncreaseDecreaseFromModification
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amortized cost excluding accrued interest, of financing receivable 12 months after modification for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
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