Allowance for Loan Losses Accruing and Non-Accruing Troubled Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015		Dec. 31, 2014		Mar. 31, 2014
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 135,631		$ 130,458		$ 139,736
Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	12,797,228		12,424,268		10,750,821
Financing Receivable, Recorded Investment, Past Due	58,809		69,544		76,092
Financing Receivable, Modifications, Recorded Investment	89,150	[1]	83,119	[1]	84,771	[1]
Impaired Financing Receivable, Related Allowance	13,297	[2]	5,950	[2]	8,561	[2]
Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2,260,731		2,403,824		3,158,489
Financing Receivable, Recorded Investment, Past Due	64,148		75,356		77,426
Financing Receivable, Modifications, Recorded Investment	13,146	[1]	12,100	[1]	5,181	[1]
Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,094		9,224		6,608
Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	33,335	[1]	35,239	[1]	49,784	[1]
Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			84,600		74,034
Financing Receivable, Recorded Investment, Past Due			26,792		43,705
Financing Receivable, Modifications, Recorded Investment			111,392		117,739
Accruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	68,990		62,333		57,403
Financing Receivable, Recorded Investment, Past Due	4,378		5,545		5,835
Financing Receivable, Modifications, Recorded Investment	73,368		67,878		63,238
Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	9,084		7,910		4,482
Financing Receivable, Recorded Investment, Past Due	597		694		571
Financing Receivable, Modifications, Recorded Investment	9,681		8,604		5,053
Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,888		8,895		6,132
Financing Receivable, Recorded Investment, Past Due	939		0		140
Financing Receivable, Modifications, Recorded Investment	8,827		8,895		6,272
Accruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,888		14,357		12,149
Financing Receivable, Recorded Investment, Past Due	25,180		20,553		37,299
Financing Receivable, Modifications, Recorded Investment	33,068		34,910		49,448
Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			9,892		11,702
Financing Receivable, Recorded Investment, Past Due			9,174		10,295
Financing Receivable, Modifications, Recorded Investment			19,066		21,997
Nonaccruing TDRs | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	11,083		7,949		11,251
Financing Receivable, Recorded Investment, Past Due	4,699		7,292		10,282
Financing Receivable, Modifications, Recorded Investment	15,782		15,241		21,533
Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,731		1,614		115
Financing Receivable, Recorded Investment, Past Due	1,734		1,882		13
Financing Receivable, Modifications, Recorded Investment	3,465		3,496		128
Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	267		329		336
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	267		329		336
Nonaccruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	267		329		336
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	267		329		336
Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	5,661		6,645		9,074
Total Tdr Allowance | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,133		3,195		5,079
Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	185		228		0
Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	24		48		0
Total Tdr Allowance | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,343		3,222		3,995
Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	16,925	[1]	7,318	[1]	6,270	[1]
Commercial | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	16,923	[1]	7,123	[1]	5,588	[1]
Commercial | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2		18		5
Commercial | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	[1]	177	[1]	677	[1]
Commercial | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		177		677
Commercial | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	16,558		6,755		2,079
Financing Receivable, Recorded Investment, Past Due	0		177		377
Financing Receivable, Modifications, Recorded Investment	16,558		6,932		2,456
Commercial | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	16,558		6,740		1,779
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	16,558		6,740		1,779
Commercial | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		15		0
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		15		0
Commercial | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		300
Financing Receivable, Recorded Investment, Past Due	0		177		377
Financing Receivable, Modifications, Recorded Investment	0		177		677
Commercial | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2		3		546
Financing Receivable, Recorded Investment, Past Due	365		383		3,268
Financing Receivable, Modifications, Recorded Investment	367		386		3,814
Commercial | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		541
Financing Receivable, Recorded Investment, Past Due	365		383		3,268
Financing Receivable, Modifications, Recorded Investment	365		383		3,809
Commercial | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	2		3		5
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	2		3		5
Commercial | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		0
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		0
Commercial | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	126		90		2,277
Commercial | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	124		72		2,265
Commercial | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2		18		0
Commercial | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0		0		12
Commercial Real Estate
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	38,424	[1]	45,648	[1]	58,066	[1]
Commercial Real Estate | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,076	[1]	17,607	[1]	16,432	[1]
Commercial Real Estate | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,453	[1]	2,542	[1]	1,695	[1]
Commercial Real Estate | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	23,895	[1]	25,499	[1]	39,939	[1]
Commercial Real Estate | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	23,895		25,499		39,939
Commercial Real Estate | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			18,008		15,984
Financing Receivable, Recorded Investment, Past Due			21,328		36,788
Financing Receivable, Modifications, Recorded Investment			39,336		52,772
Commercial Real Estate | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,031		12,885		9,254
Financing Receivable, Recorded Investment, Past Due	1,493		952		1,884
Financing Receivable, Modifications, Recorded Investment	7,524		13,837		11,138
Commercial Real Estate | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		1,695
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		1,695
Commercial Real Estate | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		5,123		5,035
Financing Receivable, Recorded Investment, Past Due	23,895		20,376		34,904
Financing Receivable, Modifications, Recorded Investment	23,895		25,499		39,939
Commercial Real Estate | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,372		2,124
Financing Receivable, Recorded Investment, Past Due			4,940		3,170
Financing Receivable, Modifications, Recorded Investment			6,312		5,294
Commercial Real Estate | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3,724		394		2,124
Financing Receivable, Recorded Investment, Past Due	828		3,376		3,170
Financing Receivable, Modifications, Recorded Investment	4,552		3,770		5,294
Commercial Real Estate | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	954		978		0
Financing Receivable, Recorded Investment, Past Due	1,499		1,564		0
Financing Receivable, Modifications, Recorded Investment	2,453		2,542		0
Commercial Real Estate | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		0
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		0
Commercial Real Estate | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,232		3,172		3,952
Commercial Real Estate | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	71		159		37
Commercial Real Estate | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	135		134		0
Commercial Real Estate | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,026		2,879		3,915
Commercial Real Estate Construction Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	346	[1]	339	[1]	5,329	[1]
Commercial Real Estate Construction Financing Receivable | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	[1]	0	[1]	2,769	[1]
Commercial Real Estate Construction Financing Receivable | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	346	[1]	339	[1]	2,560	[1]
Commercial Real Estate Construction Financing Receivable | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	346		339		2,560
Commercial Real Estate Construction Financing Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		339		3,045
Financing Receivable, Recorded Investment, Past Due	346		0		2,228
Financing Receivable, Modifications, Recorded Investment	346		339		5,273
Commercial Real Estate Construction Financing Receivable | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		2,363
Financing Receivable, Recorded Investment, Past Due	0		0		350
Financing Receivable, Modifications, Recorded Investment	0		0		2,713
Commercial Real Estate Construction Financing Receivable | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0
Financing Receivable, Recorded Investment, Past Due	0
Financing Receivable, Modifications, Recorded Investment	0
Commercial Real Estate Construction Financing Receivable | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		339		682
Financing Receivable, Recorded Investment, Past Due	346		0		1,878
Financing Receivable, Modifications, Recorded Investment	346		339		2,560
Commercial Real Estate Construction Financing Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		56
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		56
Commercial Real Estate Construction Financing Receivable | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		56
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		56
Commercial Real Estate Construction Financing Receivable | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	956
Financing Receivable, Recorded Investment, Past Due	1,499
Financing Receivable, Modifications, Recorded Investment	2,455
Commercial Real Estate Construction Financing Receivable | Nonaccruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		0
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		0
Commercial Real Estate Construction Financing Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	293		295		68
Commercial Real Estate Construction Financing Receivable | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0		0		0
Commercial Real Estate Construction Financing Receivable | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	293		295		68
Total commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	55,695	[1]	53,305	[1]	69,665	[1]
Total commercial | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	28,999	[1]	24,730	[1]	24,789	[1]
Total commercial | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,455		2,560		1,700
Total commercial | Covered Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,241	[1]	26,015	[1]	43,176	[1]
Total commercial | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,241		26,015
Total commercial | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment					43,176
Total commercial | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	22,589		25,102		21,108
Financing Receivable, Recorded Investment, Past Due	25,734		21,505		39,393
Financing Receivable, Modifications, Recorded Investment	48,323		46,607		60,501
Total commercial | Accruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	22,589		19,625		13,396
Financing Receivable, Recorded Investment, Past Due	1,493		952		2,234
Financing Receivable, Modifications, Recorded Investment	24,082		20,577		15,630
Total commercial | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			15		1,695
Financing Receivable, Recorded Investment, Past Due			0		0
Financing Receivable, Modifications, Recorded Investment			15		1,695
Total commercial | Accruing TDRs | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		5,462
Financing Receivable, Recorded Investment, Past Due	24,241		20,553
Financing Receivable, Modifications, Recorded Investment	24,241		26,015
Total commercial | Accruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					6,017
Financing Receivable, Recorded Investment, Past Due					37,159
Financing Receivable, Modifications, Recorded Investment					43,176
Total commercial | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	4,680		1,375		2,726
Financing Receivable, Recorded Investment, Past Due	2,692		5,323		6,438
Financing Receivable, Modifications, Recorded Investment	7,372		6,698		9,164
Total commercial | Nonaccruing TDRs | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	3,724		394		2,721
Financing Receivable, Recorded Investment, Past Due	1,193		3,759		6,438
Financing Receivable, Modifications, Recorded Investment	4,917		4,153		9,159
Total commercial | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			981		5
Financing Receivable, Recorded Investment, Past Due			1,564		0
Financing Receivable, Modifications, Recorded Investment			2,545		5
Total commercial | Nonaccruing TDRs | 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
Total commercial | Nonaccruing TDRs | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					0
Financing Receivable, Recorded Investment, Past Due					0
Financing Receivable, Modifications, Recorded Investment					0
Total commercial | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,651		3,557		6,297
Total commercial | Total Tdr Allowance | Originated Loans Commercial
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	195		231		2,302
Total commercial | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	137		152		0
Total commercial | Total Tdr Allowance | Covered Commercial TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,319		3,174
Total commercial | Total Tdr Allowance | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance					3,995
Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	28,077	[1]	25,880	[1]	26,615	[1]
Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,882	[1]	24,905	[1]	25,818	[1]
Consumer Installment
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	28,077		25,880		26,615
Consumer Installment | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,882		24,905		25,818
Consumer Installment | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,195		975		797
Consumer Installment | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	25,840		23,095		23,464
Financing Receivable, Recorded Investment, Past Due	442		813		557
Financing Receivable, Modifications, Recorded Investment	26,282		23,908		24,021
Consumer Installment | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	24,701		22,254		22,757
Financing Receivable, Recorded Investment, Past Due	409		726		480
Financing Receivable, Modifications, Recorded Investment	25,110		22,980		23,237
Consumer Installment | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,139		841		707
Financing Receivable, Recorded Investment, Past Due	33		87		77
Financing Receivable, Modifications, Recorded Investment	1,172		928		784
Consumer Installment | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,551		1,687		2,352
Financing Receivable, Recorded Investment, Past Due	244		285		242
Financing Receivable, Modifications, Recorded Investment	1,795		1,972		2,594
Consumer Installment | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,528		1,663		2,352
Financing Receivable, Recorded Investment, Past Due	244		262		229
Financing Receivable, Modifications, Recorded Investment	1,772		1,925		2,581
Consumer Installment | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	23		24		0
Financing Receivable, Recorded Investment, Past Due	0		23		13
Financing Receivable, Modifications, Recorded Investment	23		47		13
Consumer Installment | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	1,053		1,243		1,006
Consumer Installment | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	1,005		1,178		1,006
Consumer Installment | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	48		65		0
Consumer Home Equity Lines Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment			23,201		15,126
Consumer Home Equity Lines Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,632		7,379		6,931
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,310		6,932		1,926
Consumer Home Equity Lines Financing Receivable | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,909		8,890		6,269
Consumer Home Equity Lines Financing Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			20,986		12,686
Financing Receivable, Recorded Investment, Past Due			876		784
Financing Receivable, Modifications, Recorded Investment			21,862		13,470
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,680		6,239		5,571
Financing Receivable, Recorded Investment, Past Due	113		269		150
Financing Receivable, Modifications, Recorded Investment	6,793		6,508		5,721
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	6,610		6,186		1,322
Financing Receivable, Recorded Investment, Past Due	564		607		494
Financing Receivable, Modifications, Recorded Investment	7,174		6,793		1,816
Consumer Home Equity Lines Financing Receivable | Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,703		8,561		5,793
Financing Receivable, Recorded Investment, Past Due	939		0		140
Financing Receivable, Modifications, Recorded Investment	8,642		8,561		5,933
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current			1,339		1,656
Financing Receivable, Recorded Investment, Past Due			0		0
Financing Receivable, Modifications, Recorded Investment			1,339		1,656
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	811		871		1,210
Financing Receivable, Recorded Investment, Past Due	28		0		0
Financing Receivable, Modifications, Recorded Investment	839		871		1,210
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	136		139		110
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	136		139		110
Consumer Home Equity Lines Financing Receivable | Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	267		329		336
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	267		329		336
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	278		243		223
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	254		207		223
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0		9		0
Consumer Home Equity Lines Financing Receivable | Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	24		27		0
Residential Mortgages
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	27,193	[1]	27,218	[1]	27,296	[1]
Residential Mortgages | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,822	[1]	25,251	[1]	26,199	[1]
Residential Mortgages | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,186		1,633	[1]	758	[1]
Residential Mortgages | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	185	[1]	334		339
Residential Mortgages | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment			334	[1]
Residential Mortgages | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	85,962		14,642
Financing Receivable, Recorded Investment, Past Due	30,155		3,538
Financing Receivable, Modifications, Recorded Investment	116,117		18,180
Residential Mortgages | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	14,299		13,440
Financing Receivable, Recorded Investment, Past Due	2,286		3,538
Financing Receivable, Modifications, Recorded Investment	16,585		16,978
Residential Mortgages | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,335		868
Financing Receivable, Recorded Investment, Past Due	0		0
Financing Receivable, Modifications, Recorded Investment	1,335		868
Residential Mortgages | Accruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	185		334		339
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	185		334		339
Residential Mortgages | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	13,081		5,476
Financing Receivable, Recorded Investment, Past Due	6,433		3,562
Financing Receivable, Modifications, Recorded Investment	19,514		9,038
Residential Mortgages | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,020		5,006
Financing Receivable, Recorded Investment, Past Due	3,217		3,267
Financing Receivable, Modifications, Recorded Investment	8,237		8,273
Residential Mortgages | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	616		470
Financing Receivable, Recorded Investment, Past Due	235		295
Financing Receivable, Modifications, Recorded Investment	851		765
Residential Mortgages | Nonaccruing TDRs | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		0		0
Financing Receivable, Recorded Investment, Past Due	0		0		0
Financing Receivable, Modifications, Recorded Investment	0		0		0
Residential Mortgages | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			1,306
Residential Mortgages | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance			1,283
Residential Mortgages | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0		2
Residential Mortgages | Total Tdr Allowance | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	0		21		0
Consumer Credit Card
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	815	[1]	854	[1]	1,034
Consumer Credit Card | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	815	[1]	854	[1]	1,034	[1]
Consumer Credit Card | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	721		775		930
Financing Receivable, Recorded Investment, Past Due	77		60		95
Financing Receivable, Modifications, Recorded Investment	798		835		1,025
Consumer Credit Card | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	721		775		930
Financing Receivable, Recorded Investment, Past Due	77		60		95
Financing Receivable, Modifications, Recorded Investment	798		835		1,025
Consumer Credit Card | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		15		0
Financing Receivable, Recorded Investment, Past Due	17		4		9
Financing Receivable, Modifications, Recorded Investment	17		19		9
Consumer Credit Card | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	0		15		0
Financing Receivable, Recorded Investment, Past Due	17		4		9
Financing Receivable, Modifications, Recorded Investment	17		19		9
Consumer Credit Card | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	263		296		307
Consumer Credit Card | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	263		296		307
Consumer Residential Mortgages Financing Receivable
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	27,193				27,296
Consumer Residential Mortgages Financing Receivable | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment					26,199
Consumer Residential Mortgages Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment					758
Consumer Residential Mortgages Financing Receivable | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	15,819				15,846
Financing Receivable, Recorded Investment, Past Due	2,286				2,876
Financing Receivable, Modifications, Recorded Investment	18,105				18,722
Consumer Residential Mortgages Financing Receivable | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					14,749
Financing Receivable, Recorded Investment, Past Due					2,876
Financing Receivable, Modifications, Recorded Investment					17,625
Consumer Residential Mortgages Financing Receivable | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					758
Financing Receivable, Recorded Investment, Past Due					0
Financing Receivable, Modifications, Recorded Investment					758
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	5,636				4,968
Financing Receivable, Recorded Investment, Past Due	3,452				3,606
Financing Receivable, Modifications, Recorded Investment	9,088				8,574
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					4,968
Financing Receivable, Recorded Investment, Past Due					3,606
Financing Receivable, Modifications, Recorded Investment					8,574
Consumer Residential Mortgages Financing Receivable | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current					0
Financing Receivable, Recorded Investment, Past Due					0
Financing Receivable, Modifications, Recorded Investment					0
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	1,416				1,241
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance					1,241
Consumer Residential Mortgages Financing Receivable | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance					0
Total consumer
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	79,936	[1]	77,153	[1]	70,071	[1]
Total consumer | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	60,151	[1]	58,389	[1]	59,982	[1]
Total consumer | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	10,691	[1]	9,540		3,481
Total consumer | Covered Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment					6,608
Total consumer | Covered TDR Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,094	[1]	9,224	[1]
Total consumer | Accruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	63,373		59,498		52,926
Financing Receivable, Recorded Investment, Past Due	4,421		5,287		4,312
Financing Receivable, Modifications, Recorded Investment	67,794		64,785		57,238
Total consumer | Accruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	46,401		42,708		44,007
Financing Receivable, Recorded Investment, Past Due	2,885		4,593		3,601
Financing Receivable, Modifications, Recorded Investment	49,286		47,301		47,608
Total consumer | Accruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	9,084		7,895		2,787
Financing Receivable, Recorded Investment, Past Due	597		694		571
Financing Receivable, Modifications, Recorded Investment	9,681		8,589		3,358
Total consumer | Nonaccruing TDRs
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	8,401		8,517		8,976
Financing Receivable, Recorded Investment, Past Due	3,741		3,851		3,857
Financing Receivable, Modifications, Recorded Investment	12,142		12,368		12,833
Total consumer | Nonaccruing TDRs | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	7,359		7,555		8,530
Financing Receivable, Recorded Investment, Past Due	3,506		3,533		3,844
Financing Receivable, Modifications, Recorded Investment	10,865		11,088		12,374
Total consumer | Nonaccruing TDRs | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	775		633		110
Financing Receivable, Recorded Investment, Past Due	235		318		13
Financing Receivable, Modifications, Recorded Investment	1,010		951		123
Total consumer | Total Tdr Allowance
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	3,010		3,088		2,777
Total consumer | Total Tdr Allowance | Originated Consumer Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	2,938		2,964		2,777
Total consumer | Total Tdr Allowance | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Impaired Financing Receivable, Related Allowance	48		76		0
Consumer Home Equity Lines Financing Receivable | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	1,131,040		1,107,186		943,812
Financing Receivable, Recorded Investment, Past Due	3,198		3,150		2,990
Consumer Home Equity Lines Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	212,258		226,354		275,296
Financing Receivable, Recorded Investment, Past Due	5,566		7,275		8,013
Consumer Residential Mortgages Financing Receivable | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	620,827		602,440		536,002
Financing Receivable, Recorded Investment, Past Due	19,153		22,843		19,969
Consumer Residential Mortgages Financing Receivable | Acquired Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	362,458		372,685		425,719
Financing Receivable, Recorded Investment, Past Due	15,734		21,799		20,655
Consumer Credit Card | Originated Loans
Accruing and Nonaccruing Troubled Debt Restructurings [Line Items]
Financing Receivable, Recorded Investment, Current	159,174		162,434		146,123
Financing Receivable, Recorded Investment, Past Due	$ 1,592		$ 2,044		$ 1,794

[1] Note 1: The differences between the recorded investment and unpaid principal balance amounts represents partial charge offs.

[2] Note 1: These tables exclude loans fully charged off.Note 2: The differences between the recorded investment and unpaid principal balance amounts represent partial charge offs.