Condensed Financial Information-Parent Only (Schedule Of Condensed Cash Flow Statement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income	$ 110,653	$ 80,084	$ 51,559
Net amortization of investment securities discounts/premiums	3,458	15,825	20,337
(Increase) decrease in other assets	(17,030)	2,350	(10,422)
(Decrease) increase in other liabilities	(18,399)	9,489	10,920
Stock-based compensation expense	8,626	6,429	5,689
Net cash provided by operating activities	83,892	120,685	66,880
Financing activities
Proceeds from the exercise of common stock options	3,428	866	258
Proceeds of senior debt offering		98,160
Repurchases of common stock	(40,000)
Net cash provided by financing activities	478,279	509,016	1,116,563
Net increase (decrease) in cash and cash equivalents	256,269	(598,957)	390,170
Cash and cash equivalents, beginning of period	345,515
Cash and cash equivalents, end of period	601,784	345,515
The Bancorp, Inc. [Member]
Operating activities
Net income	110,653	80,084	51,559
Net amortization of investment securities discounts/premiums	368
(Increase) decrease in other assets	(3,164)	484	724
(Decrease) increase in other liabilities	(423)	1,810	(4)
Stock-based compensation expense	8,626	6,429	5,689
Equity in undistributed income loss	(122,372)	(90,006)	(59,030)
Net cash provided by operating activities	(6,312)	(1,199)	(1,062)
Financing activities
Proceeds from the exercise of common stock options	3,428	866	258
Proceeds of senior debt offering		98,314
Repurchases of common stock	(40,000)
Net cash provided by financing activities	(36,572)	99,180	258
Net increase (decrease) in cash and cash equivalents	(42,884)	97,981	(804)
Cash and cash equivalents, beginning of period	111,267	13,286	14,090
Cash and cash equivalents, end of period	$ 68,383	$ 111,267	$ 13,286