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Income Taxes (Summary Of Changes In Valuation Allowance) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Income Taxes [Abstract]
Beginning balance	$ 5,701	$ 6,280
Allowances written off	(1,446)	(579)
Ending balance	$ 4,255	$ 5,701

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- Definition

Deferred Tax Assets, Changes In Domestic Valuation Allowance.

+ References

No definition available.

+ Details

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Namespace Prefix:	tbbk_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Deferred Tax Assets, Domestic Valuation Allowance

+ References

No definition available.

+ Details

Name:	tbbk_DeferredTaxAssetsDomesticValuationAllowance
Namespace Prefix:	tbbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration