Fair Value Accounting (Changes In Level 3 Fair Value Measurements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Losses included in earnings attributable to the change in unrealized losses relating to assets/liabilities	$ 2,700	$ 2,100	$ 6,200	$ 2,400
Visa Derivative
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(3,974)	(5,412)	(4,330)	(5,768)
Included in earnings	(2,328)	0	(2,328)	0
Unrealized gains (losses) included in other comprehensive income	0	0	0	0
Additions	0	0	0	0
Settlements	359		715
Sales and settlements		359		715
Transfer from amortization method to fair value				0
Measurement period adjustments related to Global One acquisition		0		0
Ending balance	(5,943)	(5,053)	(5,943)	(5,053)
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	(2,328)	0	(2,328)	0
Earnout Liabilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(11,348)	(11,421)	(11,348)	(14,000)
Included in earnings	0	(1,707)	0	(1,707)
Unrealized gains (losses) included in other comprehensive income	0	0	0	0
Additions	0	0	0	0
Settlements	0		0
Sales and settlements		0		0
Transfer from amortization method to fair value				0
Measurement period adjustments related to Global One acquisition		(813)		1,766
Ending balance	(11,348)	(13,941)	(11,348)	(13,941)
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	(1,707)	0	(1,707)
GGL / SBA Loans Servicing Asset
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	3,971	4,178	4,101	0
Included in earnings	(312)	(376)	(734)	(694)
Unrealized gains (losses) included in other comprehensive income	0	0	0	0
Additions	527	495	819	539
Settlements	0		0
Sales and settlements		0		0
Transfer from amortization method to fair value				4,452
Measurement period adjustments related to Global One acquisition		0		0
Ending balance	4,186	4,297	4,186	4,297
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	(312)	(376)	(734)	(694)
Investment Securities Available for Sale
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,852	1,851	1,935	1,796
Included in earnings	0	0	0	0
Unrealized gains (losses) included in other comprehensive income	5	76	(78)	131
Additions	0	0	0	0
Settlements	0		0
Sales and settlements		0		0
Transfer from amortization method to fair value				0
Measurement period adjustments related to Global One acquisition		0		0
Ending balance	1,857	1,927	1,857	1,927
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	0	0	0	0
Private Equity Investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	12,715	23,679	15,771	25,493
Included in earnings	(37)	(1,352)	(3,093)	(3,166)
Unrealized gains (losses) included in other comprehensive income	0	0	0
Additions	0	0	0	0
Settlements	0		0
Sales and settlements		(6,629)		(6,629)
Transfer from amortization method to fair value				0
Measurement period adjustments related to Global One acquisition		0		0
Ending balance	12,678	15,698	12,678	15,698
Total net losses for the period included in earnings attributable to the change in unrealized losses relating to assets/liabilities still held	$ (37)	$ 0	$ (3,093)	$ 0