Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Oct. 31, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	Bancorp, Inc.
Entity Central Index Key	0001295401
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		56,910,521
Entity Shell Company	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Trading Symbol	TBBK
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	00-51018
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	23-3016517
Entity Address, Address Line One	409 Silverside Road
Entity Address, City or Town	Wilmington
Entity Address, Postal Zip Code	19809
Entity Address, State or Province	DE
City Area Code	302
Local Phone Number	385-5000
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock
Security Exchange Name	NASDAQ