Allowance for Loan Losses (Accruing and Non-Accruing Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 130,458	$ 133,187
Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	12,424,268	10,113,988
Financing Receivable, Recorded Investment, Past Due	69,544	99,399
Financing Receivable, Modifications, Recorded Investment	83,119	79,476
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,950	6,146	5,004
Impaired Financing Receivable, Related Allowance	5,950	6,146
Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,403,824	3,404,111
Financing Receivable, Recorded Investment, Past Due	75,356	91,504
Financing Receivable, Modifications, Recorded Investment	12,100	2,917
Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,224	5,551
Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	35,239	50,794
Commercial and Industrial Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,318	5,559
Commercial and Industrial Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,123	4,449
Commercial and Industrial Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	18	6
Commercial and Industrial Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	177	1,104
Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	45,648	57,657
Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	17,607	15,932
Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,542	1,730
Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,499	39,995
Commercial Real Estate Construction Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	339	5,049
Commercial Real Estate Construction Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	905
Commercial Real Estate Construction Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	339	4,144
Commercial Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	53,305	68,265
Commercial Loan | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,730	21,286
Commercial Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,560	1,736
Commercial Loan | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,015	45,243
Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,880	27,790
Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,905	27,285
Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	975	505
Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	23,201	12,371
Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,379	6,725
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,932	245
Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,890	5,401
Consumer Credit Card Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	854	1,113
Consumer Credit Card Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	854	1,113
Residential Mortgage
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	27,218	23,648
Residential Mortgage | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,251	23,067
Residential Mortgage | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,633	431
Residential Mortgage | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	334	150
Residential Mortgage | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment		150
Consumer Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	77,153	64,922
Consumer Loan | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	58,389	58,190
Consumer Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,540	1,181
Consumer Loan | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,224	5,551
Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	84,600	69,077
Financing Receivable, Recorded Investment, Past Due	26,792	45,170
Financing Receivable, Modifications, Recorded Investment	111,392	114,247
Accruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	62,333	54,705
Financing Receivable, Recorded Investment, Past Due	5,545	6,086
Financing Receivable, Modifications, Recorded Investment	67,878	60,791
Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,910	2,526
Financing Receivable, Recorded Investment, Past Due	694	136
Financing Receivable, Modifications, Recorded Investment	8,604	2,662
Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,895	5,527
Financing Receivable, Recorded Investment, Past Due	0	24
Financing Receivable, Modifications, Recorded Investment	8,895	5,551
Accruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	14,357	11,846
Financing Receivable, Recorded Investment, Past Due	20,553	38,948
Financing Receivable, Modifications, Recorded Investment	34,910	50,794
Accruing TDRs | Commercial and Industrial Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,755	1,800
Financing Receivable, Recorded Investment, Past Due	177	1,621
Financing Receivable, Modifications, Recorded Investment	6,932	3,421
Accruing TDRs | Commercial and Industrial Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,740	1,438
Financing Receivable, Recorded Investment, Past Due	0	879
Financing Receivable, Modifications, Recorded Investment	6,740	2,317
Accruing TDRs | Commercial and Industrial Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	15	0
Accruing TDRs | Commercial and Industrial Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	362
Financing Receivable, Recorded Investment, Past Due	177	742
Financing Receivable, Modifications, Recorded Investment	177	1,104
Accruing TDRs | Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	18,008	17,431
Financing Receivable, Recorded Investment, Past Due	21,328	35,118
Financing Receivable, Modifications, Recorded Investment	39,336	52,549
Accruing TDRs | Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	12,885	10,442
Financing Receivable, Recorded Investment, Past Due	952	382
Financing Receivable, Modifications, Recorded Investment	13,837	10,824
Accruing TDRs | Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	1,730
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	1,730
Accruing TDRs | Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,123	5,259
Financing Receivable, Recorded Investment, Past Due	20,376	34,736
Financing Receivable, Modifications, Recorded Investment	25,499	39,995
Accruing TDRs | Commercial Real Estate Construction Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	339	1,546
Financing Receivable, Recorded Investment, Past Due	0	3,446
Financing Receivable, Modifications, Recorded Investment	339	4,992
Accruing TDRs | Commercial Real Estate Construction Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	848
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	848
Accruing TDRs | Commercial Real Estate Construction Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	339	698
Financing Receivable, Recorded Investment, Past Due	0	3,446
Financing Receivable, Modifications, Recorded Investment	339	4,144
Accruing TDRs | Commercial Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	25,102	20,777
Financing Receivable, Recorded Investment, Past Due	21,505	40,185
Financing Receivable, Modifications, Recorded Investment	46,607	60,962
Accruing TDRs | Commercial Loan | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	19,625	12,728
Financing Receivable, Recorded Investment, Past Due	952	1,261
Financing Receivable, Modifications, Recorded Investment	20,577	13,989
Accruing TDRs | Commercial Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15	1,730
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	15	1,730
Accruing TDRs | Commercial Loan | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,462	6,319
Financing Receivable, Recorded Investment, Past Due	20,553	38,924
Financing Receivable, Modifications, Recorded Investment	26,015	45,243
Accruing TDRs | Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	23,095	23,711
Financing Receivable, Recorded Investment, Past Due	813	1,374
Financing Receivable, Modifications, Recorded Investment	23,908	25,085
Accruing TDRs | Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	22,254	23,342
Financing Receivable, Recorded Investment, Past Due	726	1,238
Financing Receivable, Modifications, Recorded Investment	22,980	24,580
Accruing TDRs | Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	841	369
Financing Receivable, Recorded Investment, Past Due	87	136
Financing Receivable, Modifications, Recorded Investment	928	505
Accruing TDRs | Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	20,986	10,872
Financing Receivable, Recorded Investment, Past Due	876	218
Financing Receivable, Modifications, Recorded Investment	21,862	11,090
Accruing TDRs | Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,239	5,313
Financing Receivable, Recorded Investment, Past Due	269	194
Financing Receivable, Modifications, Recorded Investment	6,508	5,507
Accruing TDRs | Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,186	182
Financing Receivable, Recorded Investment, Past Due	607	0
Financing Receivable, Modifications, Recorded Investment	6,793	182
Accruing TDRs | Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,561	5,377
Financing Receivable, Recorded Investment, Past Due	0	24
Financing Receivable, Modifications, Recorded Investment	8,561	5,401
Accruing TDRs | Consumer Credit Card Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	775	1,046
Financing Receivable, Recorded Investment, Past Due	60	66
Financing Receivable, Modifications, Recorded Investment	835	1,112
Accruing TDRs | Consumer Credit Card Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	775	1,046
Financing Receivable, Recorded Investment, Past Due	60	66
Financing Receivable, Modifications, Recorded Investment	835	1,112
Accruing TDRs | Residential Mortgage
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	14,642	12,671
Financing Receivable, Recorded Investment, Past Due	3,538	3,327
Financing Receivable, Modifications, Recorded Investment	18,180	15,998
Accruing TDRs | Residential Mortgage | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	13,440	12,276
Financing Receivable, Recorded Investment, Past Due	3,538	3,327
Financing Receivable, Modifications, Recorded Investment	16,978	15,603
Accruing TDRs | Residential Mortgage | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	868	245
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	868	245
Accruing TDRs | Residential Mortgage | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	334	150
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	334	150
Accruing TDRs | Consumer Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	59,498	48,300
Financing Receivable, Recorded Investment, Past Due	5,287	4,985
Financing Receivable, Modifications, Recorded Investment	64,785	53,285
Accruing TDRs | Consumer Loan | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	42,708	41,977
Financing Receivable, Recorded Investment, Past Due	4,593	4,825
Financing Receivable, Modifications, Recorded Investment	47,301	46,802
Accruing TDRs | Consumer Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,895	796
Financing Receivable, Recorded Investment, Past Due	694	136
Financing Receivable, Modifications, Recorded Investment	8,589	932
Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	9,892	9,535
Financing Receivable, Recorded Investment, Past Due	9,174	9,405
Financing Receivable, Modifications, Recorded Investment	19,066	18,940
Nonaccruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,949	9,434
Financing Receivable, Recorded Investment, Past Due	7,292	9,251
Financing Receivable, Modifications, Recorded Investment	15,241	18,685
Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,614	101
Financing Receivable, Recorded Investment, Past Due	1,882	154
Financing Receivable, Modifications, Recorded Investment	3,496	255
Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	329	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	329	0
Nonaccruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	329	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	329	0
Nonaccruing TDRs | Commercial and Industrial Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3	183
Financing Receivable, Recorded Investment, Past Due	383	1,955
Financing Receivable, Modifications, Recorded Investment	386	2,138
Nonaccruing TDRs | Commercial and Industrial Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	177
Financing Receivable, Recorded Investment, Past Due	383	1,955
Financing Receivable, Modifications, Recorded Investment	383	2,132
Nonaccruing TDRs | Commercial and Industrial Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3	6
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	3	6
Nonaccruing TDRs | Commercial and Industrial Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccruing TDRs | Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,372	1,208
Financing Receivable, Recorded Investment, Past Due	4,940	3,900
Financing Receivable, Modifications, Recorded Investment	6,312	5,108
Nonaccruing TDRs | Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	394	1,208
Financing Receivable, Recorded Investment, Past Due	3,376	3,900
Financing Receivable, Modifications, Recorded Investment	3,770	5,108
Nonaccruing TDRs | Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	978	0
Financing Receivable, Recorded Investment, Past Due	1,564	0
Financing Receivable, Modifications, Recorded Investment	2,542	0
Nonaccruing TDRs | Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccruing TDRs | Commercial Real Estate Construction Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	57
Financing Receivable, Modifications, Recorded Investment	0	57
Nonaccruing TDRs | Commercial Real Estate Construction Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	57
Financing Receivable, Modifications, Recorded Investment	0	57
Nonaccruing TDRs | Commercial Real Estate Construction Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccruing TDRs | Commercial Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,375	1,391
Financing Receivable, Recorded Investment, Past Due	5,323	5,912
Financing Receivable, Modifications, Recorded Investment	6,698	7,303
Nonaccruing TDRs | Commercial Loan | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	394	1,385
Financing Receivable, Recorded Investment, Past Due	3,759	5,912
Financing Receivable, Modifications, Recorded Investment	4,153	7,297
Nonaccruing TDRs | Commercial Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	981	6
Financing Receivable, Recorded Investment, Past Due	1,564	0
Financing Receivable, Modifications, Recorded Investment	2,545	6
Nonaccruing TDRs | Commercial Loan | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccruing TDRs | Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,687	2,483
Financing Receivable, Recorded Investment, Past Due	285	222
Financing Receivable, Modifications, Recorded Investment	1,972	2,705
Nonaccruing TDRs | Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,663	2,483
Financing Receivable, Recorded Investment, Past Due	262	222
Financing Receivable, Modifications, Recorded Investment	1,925	2,705
Nonaccruing TDRs | Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	24	0
Financing Receivable, Recorded Investment, Past Due	23	0
Financing Receivable, Modifications, Recorded Investment	47	0
Nonaccruing TDRs | Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,339	1,269
Financing Receivable, Recorded Investment, Past Due	0	12
Financing Receivable, Modifications, Recorded Investment	1,339	1,281
Nonaccruing TDRs | Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	871	1,206
Financing Receivable, Recorded Investment, Past Due	0	12
Financing Receivable, Modifications, Recorded Investment	871	1,218
Nonaccruing TDRs | Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	139	63
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	139	63
Nonaccruing TDRs | Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	329	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	329	0
Nonaccruing TDRs | Consumer Credit Card Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15	0
Financing Receivable, Recorded Investment, Past Due	4	1
Financing Receivable, Modifications, Recorded Investment	19	1
Nonaccruing TDRs | Consumer Credit Card Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15	0
Financing Receivable, Recorded Investment, Past Due	4	1
Financing Receivable, Modifications, Recorded Investment	19	1
Nonaccruing TDRs | Residential Mortgage
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,476	4,392
Financing Receivable, Recorded Investment, Past Due	3,562	3,258
Financing Receivable, Modifications, Recorded Investment	9,038	7,650
Nonaccruing TDRs | Residential Mortgage | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,006	4,360
Financing Receivable, Recorded Investment, Past Due	3,267	3,104
Financing Receivable, Modifications, Recorded Investment	8,273	7,464
Nonaccruing TDRs | Residential Mortgage | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	470	32
Financing Receivable, Recorded Investment, Past Due	295	154
Financing Receivable, Modifications, Recorded Investment	765	186
Nonaccruing TDRs | Residential Mortgage | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0	0
Financing Receivable, Recorded Investment, Past Due	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Nonaccruing TDRs | Consumer Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,517	8,144
Financing Receivable, Recorded Investment, Past Due	3,851	3,493
Financing Receivable, Modifications, Recorded Investment	12,368	11,637
Nonaccruing TDRs | Consumer Loan | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,555	8,049
Financing Receivable, Recorded Investment, Past Due	3,533	3,339
Financing Receivable, Modifications, Recorded Investment	11,088	11,388
Nonaccruing TDRs | Consumer Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	633	95
Financing Receivable, Recorded Investment, Past Due	318	154
Financing Receivable, Modifications, Recorded Investment	951	249
Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	6,645	7,201
Total Tdr Allowance | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,195	3,379
Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	228	0
Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	48	0
Total Tdr Allowance | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,222	3,822
Total Tdr Allowance | Commercial and Industrial Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	90	665
Total Tdr Allowance | Commercial and Industrial Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	72	665
Total Tdr Allowance | Commercial and Industrial Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	18	0
Total Tdr Allowance | Commercial and Industrial Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0	0
Total Tdr Allowance | Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,172	3,054
Total Tdr Allowance | Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	159	32
Total Tdr Allowance | Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	134	0
Total Tdr Allowance | Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,879	3,022
Total Tdr Allowance | Commercial Real Estate Construction Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	295	800
Total Tdr Allowance | Commercial Real Estate Construction Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0	0
Total Tdr Allowance | Commercial Real Estate Construction Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	295	800
Total Tdr Allowance | Commercial Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,557	4,519
Total Tdr Allowance | Commercial Loan | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	231	697
Total Tdr Allowance | Commercial Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	152	0
Total Tdr Allowance | Commercial Loan | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,174	3,822
Total Tdr Allowance | Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	1,243	1,014
Total Tdr Allowance | Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance		1,014
Total Tdr Allowance | Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	65	0
Total Tdr Allowance | Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	243	223
Total Tdr Allowance | Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance		223
Total Tdr Allowance | Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	9	0
Total Tdr Allowance | Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	27	0
Total Tdr Allowance | Consumer Credit Card Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	296	312
Total Tdr Allowance | Consumer Credit Card Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance		312
Total Tdr Allowance | Residential Mortgage
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	1,306	1,133
Total Tdr Allowance | Residential Mortgage | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance		1,133
Total Tdr Allowance | Residential Mortgage | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2	0
Total Tdr Allowance | Residential Mortgage | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	21	0
Total Tdr Allowance | Consumer Loan
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,088	2,682
Total Tdr Allowance | Consumer Loan | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,964	2,682
Total Tdr Allowance | Consumer Loan | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	$ 76	$ 0