Financial Instruments With Off-Balance-Sheet Risk And Concentrations Of Credit Risk (Narrative) (Details)	Dec. 31, 2019 USD ($)
Financial Instruments With Off-Balance-Sheet Risk And Concentrations Of Credit Risk [Abstract]
Standby letters of credit expire in 2020	$ 3,400,000
Standby letters of credit expire in 2021	$ 124,000

Credit Commitment Amount Expire In Next Twelve Months

No definition available.

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