Condensed Financial Information-Parent Only (Schedule Of Condensed Statements Of Operations) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Expense
Interest on subordinated debentures									$ 750,000	$ 714,000	$ 586,000
Non-interest expense	$ 47,722,000	$ 42,051,000	$ 39,519,000	$ 39,229,000	$ 37,620,000	$ 37,299,000	$ 37,310,000	$ 39,049,000	168,521,000	151,278,000	154,914,000
Income before income tax	6,505,000	28,374,000	14,169,000	23,446,000	8,754,000	83,243,000	8,364,000	19,420,000	72,494,000	119,781,000	40,394,000
Income tax expense	3,641,000	7,975,000	3,575,000	6,035,000	2,691,000	21,942,000	2,209,000	5,399,000	21,226,000	32,241,000	23,056,000
Net income	$ 1,854,000	$ 20,425,000	$ 11,350,000	$ 17,930,000	$ 7,119,000	$ 61,277,000	$ 6,141,000	$ 14,140,000	51,559,000	88,677,000	21,673,000
The Bancorp, Inc. [Member]
Income
Other income										517,000	31,852,000
Total income										517,000	31,852,000
Expense
Interest on subordinated debentures									750,000	714,000	586,000
Non-interest expense									6,721,000	4,528,000	37,465,000
Total expense									7,471,000	5,242,000	38,051,000
Equity in undistributed income of subsidiaries									59,030,000	93,402,000	25,097,000
Income before income tax									51,559,000	88,677,000	18,898,000
Income tax expense											(2,775,000)
Net income									$ 51,559,000	$ 88,677,000	$ 21,673,000