Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Feb. 13, 2015	Dec. 31, 2014	Jan. 01, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 2,025,905	$ 1,888,475
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	1,186,498	1,029,426
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			$ 154,496		$ 316,327
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	59,182	60,660
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(276,937)	(296,480)
Ending balance	1,123,239	$ 1,109,933
Loans on the Cost Recovery Method
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on cost recovery method	12,200			$ 33,400
Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	726,123
Ending balance	697,045
Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	460,375
Ending balance	426,194
Construction and land development | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	78,079
Ending balance	48,208
Construction and land development | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	912
Ending balance	345
Mortgage | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	577,518
Ending balance	611,505
Mortgage | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	382,340
Ending balance	358,307
Other commercial real estate | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	40,193
Ending balance	14,353
Commercial and industrial | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	27,254
Ending balance	20,382
Consumer | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	3,014
Ending balance	$ 3,202
Capitol City Bank and Trust
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			154,496
Capitol City Bank and Trust | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			139,894
Capitol City Bank and Trust | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			14,602
Capitol City Bank and Trust | Construction and land development | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			4,116
Capitol City Bank and Trust | Mortgage | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			129,732
Capitol City Bank and Trust | Mortgage | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			13,251
Capitol City Bank and Trust | Other commercial real estate | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			3,202
Capitol City Bank and Trust | Commercial and industrial | Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			2,844
Capitol City Bank and Trust | Consumer | Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			$ 1,351