Segment Financials (Schedule Of Segment Reporting Information, By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest income	$ 38,656			$ 31,914			$ 109,323	$ 91,176
Interest expense	8,024			4,013			19,083	11,183
Net interest income	30,632			27,901			90,240	79,993
Provision for loan and lease losses	1,060			800			2,660	2,150
Non-interest income	90,970			29,007			137,105	71,399
Non-interest expense	37,299			43,883			113,658	119,029
Income from continuing operations before income taxes	83,243			12,225			111,027	30,213
Income taxes	21,942			5,455			29,550	(457)
Net income from continuing operations	61,301			6,770			81,477	30,670
Income from discontinued operations	(24)			511			81	3,438
Net income	61,277	$ 6,141	$ 14,140	7,281	$ 18,864	$ 7,963	81,558	34,108
Total assets	4,360,200						4,360,200		$ 4,708,147
Total liabilities	3,968,326						3,968,326		4,383,998
Specialty Finance [Member]
Segment Reporting Information [Line Items]
Interest income	24,957			21,631			70,184	59,861
Interest expense	1,760			848			3,569	2,627
Net interest income	23,197			20,783			66,615	57,234
Provision for loan and lease losses	1,060			800			2,660	2,150
Non-interest income	75,282			13,834			88,600	24,507
Non-interest expense	14,462			14,844			43,212	42,251
Income from continuing operations before income taxes	82,957			18,973			109,343	37,340
Net income from continuing operations	82,957			18,973			109,343	37,340
Net income	82,957			18,973			109,343	37,340
Total assets	1,820,221						1,820,221		1,865,572
Total liabilities	541,886						541,886		653,952
Payments [Member]
Segment Reporting Information [Line Items]
Interest allocation	13,699			10,283			39,139	31,315
Interest expense	5,723			2,709			14,247	7,567
Net interest income	7,976			7,574			24,892	23,748
Non-interest income	15,639			14,638			48,395	45,625
Non-interest expense	15,720			16,384			48,602	54,829
Income from continuing operations before income taxes	7,895			5,828			24,685	14,544
Net income from continuing operations	7,895			5,828			24,685	14,544
Net income	7,895			5,828			24,685	14,544
Total assets	36,685						36,685		29,615
Total liabilities	3,113,524						3,113,524		3,371,730
Corporate [Member]
Segment Reporting Information [Line Items]
Interest income	13,699			10,283			39,139	31,315
Interest allocation	(13,699)			(10,283)			(39,139)	(31,315)
Interest expense	541			456			1,267	989
Net interest income	(541)			(456)			(1,267)	(989)
Non-interest income	49			535			110	1,267
Non-interest expense	7,117			12,655			21,844	21,949
Income from continuing operations before income taxes	(7,609)			(12,576)			(23,001)	(21,671)
Income taxes	21,942			5,455			29,550	(457)
Net income from continuing operations	(29,551)			(18,031)			(52,551)	(21,214)
Net income	(29,551)			(18,031)			(52,551)	(21,214)
Total assets	2,277,268						2,277,268		2,508,647
Total liabilities	312,916						312,916		358,316
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Income from discontinued operations	(24)			511			81	3,438
Net income	(24)			$ 511			81	$ 3,438
Total assets	$ 226,026						$ 226,026		$ 304,313