Allowance for Loan and Lease Losses (Note Restructurings During Period) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) loans	Dec. 31, 2014 USD ($) loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 144,843	$ 151,479
Commercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	104,978	118,166
Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,881	3,037
Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	84,540	101,121
Commercial | Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,840	2,823
Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,174	10,528
Commercial | Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,360	623
Commercial | Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,183	34
Noncommercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	39,865	33,313
Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	784	1,391
Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	32,556	27,252
Noncommercial | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	5,305	3,675
Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 114,192	$ 104,607
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	50	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 8,326	$ 1,180
Financing Receivable, Modifications, Number of Contracts | loans	372	248
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 37,183	$ 30,869
PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 30,600	$ 46,872
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	15
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 96	$ 214
Financing Receivable, Modifications, Number of Contracts | loans	18	79
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,752	$ 12,206
Principal Forgiveness [Member] | Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 364
Financing Receivable, Modifications, Number of Contracts | loans	6	12
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,052	$ 2,375
Principal Forgiveness [Member] | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 364
Financing Receivable, Modifications, Number of Contracts | loans	3	6
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 185	$ 1,973
Principal Forgiveness [Member] | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	2	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 776	$ 250
Principal Forgiveness [Member] | Non-PCI Loans | Commercial | Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 118
Principal Forgiveness [Member] | Non-PCI Loans | Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 91	$ 0
Principal Forgiveness [Member] | Non-PCI Loans | Noncommercial | Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 34
Principal Forgiveness [Member] | PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0
Principal Forgiveness [Member] | PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0
Extended Maturity [Member] | Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	3	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 334	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	27	63
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 4,858	$ 8,404
Extended Maturity [Member] | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 18	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 18	$ 187
Extended Maturity [Member] | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 316	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	12	18
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 3,144	$ 4,848
Extended Maturity [Member] | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	5	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,380	$ 2,274
Extended Maturity [Member] | Non-PCI Loans | Commercial | Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	4	6
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 146	$ 198
Extended Maturity [Member] | Non-PCI Loans | Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	7
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 226
Extended Maturity [Member] | Non-PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	19
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 110	$ 572
Extended Maturity [Member] | Non-PCI Loans | Noncommercial | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 8	$ 0
Extended Maturity [Member] | Non-PCI Loans | Noncommercial | Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans		1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	3	6
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 52	$ 99
Extended Maturity [Member] | PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 53
Financing Receivable, Modifications, Number of Contracts | loans	1	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 178	$ 700
Extended Maturity [Member] | PCI Loans | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 332
Extended Maturity [Member] | PCI Loans | Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 51
Extended Maturity [Member] | PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 53
Financing Receivable, Modifications, Number of Contracts | loans	1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 178	$ 317
Interest Rate Below Market Reduction [Member] | Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	24	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 6,327	$ 486
Financing Receivable, Modifications, Number of Contracts | loans	218	137
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 24,728	$ 17,345
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	3	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 122	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	21	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 992	$ 372
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	3	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 3,969	$ 441
Financing Receivable, Modifications, Number of Contracts | loans	37	44
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 13,900	$ 12,642
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Commercial | Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	2	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 122	$ 337
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Commercial | Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,619	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	15	13
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,301	$ 751
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	2	12
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 253	$ 389
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	14	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 607	$ 45
Financing Receivable, Modifications, Number of Contracts | loans	116	41
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 5,695	$ 2,444
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Noncommercial | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	6	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 136	$ 217
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Noncommercial | Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 10	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	18	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 146	$ 193
Interest Rate Below Market Reduction [Member] | Non-PCI Loans | Noncommercial | Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,183	$ 0
Interest Rate Below Market Reduction [Member] | PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	6
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 96	$ 161
Financing Receivable, Modifications, Number of Contracts | loans	14	47
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,187	$ 9,847
Interest Rate Below Market Reduction [Member] | PCI Loans | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 116
Interest Rate Below Market Reduction [Member] | PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 138
Financing Receivable, Modifications, Number of Contracts | loans	0	16
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 5,783
Interest Rate Below Market Reduction [Member] | PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 96	$ 23
Financing Receivable, Modifications, Number of Contracts | loans	14	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,187	$ 3,948
Discharge of Debt [Member] | Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	23	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,665	$ 330
Financing Receivable, Modifications, Number of Contracts | loans	121	36
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 6,545	$ 2,745
Discharge of Debt [Member] | Non-PCI Loans | Commercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 3	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	4	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 38	$ 0
Discharge of Debt [Member] | Non-PCI Loans | Commercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	2	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 644	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	4	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,897	$ 949
Discharge of Debt [Member] | Non-PCI Loans | Noncommercial | Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 62
Financing Receivable, Modifications, Number of Contracts | loans	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 62
Discharge of Debt [Member] | Non-PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	4	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 242	$ 268
Financing Receivable, Modifications, Number of Contracts | loans	29	12
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,454	$ 1,067
Discharge of Debt [Member] | Non-PCI Loans | Noncommercial | Commercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	3	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 146	$ 0
Discharge of Debt [Member] | Non-PCI Loans | Noncommercial | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	7	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 75	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	25	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 296	$ 4
Discharge of Debt [Member] | Non-PCI Loans | Noncommercial | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	9	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 701	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	56	17
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,714	$ 663
Discharge of Debt [Member] | PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	3	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 387	$ 1,659
Discharge of Debt [Member] | PCI Loans | Noncommercial | Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	2	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 282	$ 1,659
Discharge of Debt [Member] | PCI Loans | Noncommercial | Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loans	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0
Financing Receivable, Modifications, Number of Contracts | loans	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0