Allowance for Loan and Lease Losses (Note Restructurings During Period) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) loans	Sep. 30, 2014 USD ($) loans	Sep. 30, 2015 USD ($) loans	Sep. 30, 2014 USD ($) loans
PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	4	10	13	77
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 328	$ 3,952	$ 949	$ 12,228
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	4	1	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 448	$ 47	$ 519
PCI Loans | Loan term extension
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	1	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 670
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
PCI Loans | Loan term extension | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	1	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 348
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
PCI Loans | Loan term extension | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 322
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
PCI Loans | Interest only period provided
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
PCI Loans | Interest only period provided | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
PCI Loans | Below market interest rate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	3	9	11	46
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 3,604	$ 766	$ 9,841
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	1	1	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 67	$ 47	$ 94
PCI Loans | Below market interest rate | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 308
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
PCI Loans | Below market interest rate | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	6	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 3,377	$ 0	$ 5,539
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	1	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 67	$ 0	$ 94
PCI Loans | Below market interest rate | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	3	3	11	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 227	$ 766	$ 3,994
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 0	$ 47	$ 0
PCI Loans | Discharged from bankruptcy
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	0	2	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 183	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
PCI Loans | Discharged from bankruptcy | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			1	26
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 78	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
PCI Loans | Discharged from bankruptcy | Noncommerical | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 105	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	77	40	282	180
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 8,906	$ 5,344	$ 27,484	$ 27,743
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	10	5	19	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 2,391	$ 283	$ 2,808	$ 2,313
Non-PCI Loans | Loan term extension
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	4	8	14	42
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,520	$ 764	$ 3,097	$ 7,274
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 204	$ 0
Non-PCI Loans | Loan term extension | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 204	$ 189
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 204	$ 0
Non-PCI Loans | Loan term extension | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	1	7	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 75	$ 462	$ 1,406	$ 4,072
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Loan term extension | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	3	0	4	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,445	$ 0	$ 1,473	$ 2,040
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Loan term extension | Commercial | Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 144
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Loan term extension | Noncommerical | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	2	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 141	$ 0	$ 175
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Loan term extension | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	3	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 80	$ 0	$ 532
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Loan term extension | Noncommerical | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 9	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Loan term extension | Noncommerical | Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	2	1	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 81	$ 5	$ 122
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Interest only period provided
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	0	5	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 1,272	$ 2,995
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 592
Non-PCI Loans | Interest only period provided | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			2	6
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 68	$ 2,449
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 592
Non-PCI Loans | Interest only period provided | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			2	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,112	$ 375
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Interest only period provided | Commercial | Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 131
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Interest only period provided | Commercial | Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 40
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Interest only period provided | Noncommerical | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 92	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	45	28	172	101
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 5,008	$ 4,468	$ 18,029	$ 15,313
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	5	2	8	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,915	$ 221	$ 1,970	$ 1,371
Non-PCI Loans | Below market interest rate | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	4	0	14	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 193	$ 0	$ 626	$ 371
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	8	6	31	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,248	$ 3,062	$ 7,880	$ 11,399
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	1	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 176	$ 1,757	$ 1,276
Non-PCI Loans | Below market interest rate | Commercial | Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	2	0	2	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 124	$ 0	$ 124	$ 347
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	3	3	13	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,797	$ 462	$ 2,476	$ 772
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,757	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate | Commercial | Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,464	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans | Below market interest rate | Noncommerical | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	3	2	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 173	$ 253	$ 590
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	25	11	90	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,592	$ 609	$ 4,946	$ 1,402
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	4	1	7	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 158	$ 45	$ 213	$ 95
Non-PCI Loans | Below market interest rate | Noncommerical | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	1	0	6	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 37	$ 0	$ 140	$ 270
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Below market interest rate | Noncommerical | Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	2	5	13	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 17	$ 162	$ 120	$ 162
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Discharged from bankruptcy
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	27	4	91	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,286	$ 112	$ 5,086	$ 2,161
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	5	3	9	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 476	$ 62	$ 634	$ 350
Non-PCI Loans | Discharged from bankruptcy | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	2		2	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 21	$ 0	$ 21	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Discharged from bankruptcy | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	2	1	3	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 965	$ 0	$ 1,562	$ 970
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	1	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 275	$ 0	$ 275	$ 0
Non-PCI Loans | Discharged from bankruptcy | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	2	0	3	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 148	$ 0	$ 148	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans | Discharged from bankruptcy | Noncommerical | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 62
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 62	$ 0	$ 62
Non-PCI Loans | Discharged from bankruptcy | Noncommerical | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	6	0	20	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 395	$ 0	$ 938	$ 691
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 288
Non-PCI Loans | Discharged from bankruptcy | Noncommerical | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	9	2	47	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 666	$ 99	$ 2,230	$ 420
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	1	6	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 162	$ 0	$ 320	$ 0
Non-PCI Loans | Discharged from bankruptcy | Noncommerical | Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | loans	6	1	16	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 91	$ 13	$ 187	$ 18
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	0	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 39	$ 0	$ 39	$ 0