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Loans Past Due Financing Receivables (Details) (USD $)
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Consumer Loans Guaranteed by Government $ 2,900,000 $ 3,400,000 $ 3,100,000
Originated Loans
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 32,278,000 36,548,000 38,293,000
60 to 89 Days Past Due 13,398,000 13,635,000 13,886,000
Equal to Greater than 90 Days Past Due 30,471,000 28,754,000 32,534,000
Total Past Due 76,147,000 78,937,000 84,713,000
Current 9,712,992,000 8,652,722,000 8,231,707,000
Total Loans 9,789,139,000 8,731,659,000 8,316,420,000
90 Days Past Due and Still Accruing 12,452,000 9,417,000 9,691,000
Nonaccrual Loans 35,588,000 36,687,000 50,311,000
Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 3,571,000 3,814,000 8,781,000
60 to 89 Days Past Due 3,889,000 1,986,000 2,795,000
Equal to Greater than 90 Days Past Due 4,931,000 3,571,000 1,519,000
Total Past Due 12,391,000 9,371,000 13,095,000
Current 3,851,704,000 3,297,155,000 3,036,136,000
Total Loans 3,864,095,000 3,306,526,000 3,049,231,000
90 Days Past Due and Still Accruing 201,000 104,000 57,000
Nonaccrual Loans 5,234,000 5,255,000 9,995,000
Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 2,794,000 4,181,000 3,197,000
60 to 89 Days Past Due 1,414,000 4,530,000 3,856,000
Equal to Greater than 90 Days Past Due 8,976,000 11,535,000 16,876,000
Total Past Due 13,184,000 20,246,000 23,929,000
Current 2,214,228,000 2,204,170,000 2,129,413,000
Total Loans 2,227,412,000 2,224,416,000 2,153,342,000
90 Days Past Due and Still Accruing 1,047,000 382,000 1,862,000
Nonaccrual Loans 13,821,000 15,780,000 20,574,000
Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 328,862,000 335,547,000 309,105,000
Originated Loans | Commercial Construction Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 0 981,000 116,000
60 to 89 Days Past Due 0 0 0
Equal to Greater than 90 Days Past Due 24,000 597,000 853,000
Total Past Due 24,000 1,578,000 969,000
Current 328,838,000 333,969,000 308,136,000
Total Loans 328,862,000 335,547,000 309,105,000
90 Days Past Due and Still Accruing 0 0 0
Nonaccrual Loans 85,000 731,000 923,000
Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 726,000 6,000 7,000
60 to 89 Days Past Due 0 0 0
Equal to Greater than 90 Days Past Due 0 0 0
Total Past Due 726,000 6,000 7,000
Current 199,181,000 139,230,000 110,931,000
Total Loans 199,907,000 139,236,000 110,938,000
90 Days Past Due and Still Accruing 0 0 0
Nonaccrual Loans 0 0 0
Originated Loans | Installment
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 9,825,000 11,722,000 8,934,000
60 to 89 Days Past Due 3,392,000 3,193,000 3,430,000
Equal to Greater than 90 Days Past Due 5,378,000 5,639,000 4,834,000
Total Past Due 18,595,000 20,554,000 17,198,000
Current 1,628,500,000 1,307,704,000 1,303,883,000
Total Loans 1,647,095,000 1,328,258,000 1,321,081,000
90 Days Past Due and Still Accruing 4,506,000 4,942,000 4,439,000
Nonaccrual Loans 3,894,000 2,914,000 3,267,000
Originated Loans | Home equity lines
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 1,094,000 1,584,000 1,840,000
60 to 89 Days Past Due 498,000 880,000 472,000
Equal to Greater than 90 Days Past Due 1,118,000 1,227,000 1,411,000
Total Past Due 2,710,000 3,691,000 3,723,000
Current 886,662,000 802,387,000 786,020,000
Total Loans 889,372,000 806,078,000 789,743,000
90 Days Past Due and Still Accruing 500,000 475,000 541,000
Nonaccrual Loans 2,038,000 1,557,000 1,858,000
Originated Loans | Consumer Credit Card Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 781,000 969,000 991,000
60 to 89 Days Past Due 434,000 558,000 556,000
Equal to Greater than 90 Days Past Due 700,000 954,000 808,000
Total Past Due 1,915,000 2,481,000 2,355,000
Current 143,198,000 143,906,000 141,563,000
Total Loans 145,113,000 146,387,000 143,918,000
90 Days Past Due and Still Accruing 365,000 438,000 393,000
Nonaccrual Loans 422,000 598,000 525,000
Originated Loans | Consumer Residential Mortgages Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 13,487,000 13,291,000 14,427,000
60 to 89 Days Past Due 3,771,000 2,488,000 2,777,000
Equal to Greater than 90 Days Past Due 9,344,000 5,231,000 6,233,000
Total Past Due 26,602,000 21,010,000 23,437,000
Current 460,681,000 424,201,000 415,625,000
Total Loans 487,283,000 445,211,000 439,062,000
90 Days Past Due and Still Accruing 5,833,000 3,076,000 2,399,000
Nonaccrual Loans 10,094,000 9,852,000 13,169,000
Acquired Loans
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 41,455,000    
60 to 89 Days Past Due 10,198,000    
Equal to Greater than 90 Days Past Due 45,696,000    
Total Past Due 97,349,000    
Current 3,728,402,000    
Total Loans 3,825,751,000    
90 Days Past Due and Still Accruing 2,967,000    
Nonaccrual Loans 9,899,000    
Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 5,379,000    
60 to 89 Days Past Due 331,000    
Equal to Greater than 90 Days Past Due 3,239,000    
Total Past Due 8,949,000    
Current 974,271,000    
Total Loans 983,220,000    
90 Days Past Due and Still Accruing 0    
Nonaccrual Loans 5,301,000    
Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 3,068,000    
60 to 89 Days Past Due 2,816,000    
Equal to Greater than 90 Days Past Due 26,766,000    
Total Past Due 32,650,000    
Current 937,010,000    
Total Loans 969,660,000    
90 Days Past Due and Still Accruing 0    
Nonaccrual Loans 691,000    
Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 18,182,000    
Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Acquired Loans | Installment
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 10,883,000    
60 to 89 Days Past Due 2,866,000    
Equal to Greater than 90 Days Past Due 1,446,000    
Total Past Due 15,195,000    
Current 1,065,103,000    
Total Loans 1,080,298,000    
90 Days Past Due and Still Accruing 0    
Nonaccrual Loans 954,000    
Acquired Loans | Home equity lines
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 3,779,000    
60 to 89 Days Past Due 982,000    
Equal to Greater than 90 Days Past Due 3,522,000    
Total Past Due 8,283,000    
Current 298,500,000    
Total Loans 306,783,000    
90 Days Past Due and Still Accruing 0    
Nonaccrual Loans 2,184,000    
Acquired Loans | Consumer Residential Mortgages Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 18,346,000    
60 to 89 Days Past Due 3,203,000    
Equal to Greater than 90 Days Past Due 10,723,000    
Total Past Due 32,272,000    
Current 435,336,000    
Total Loans 467,608,000    
90 Days Past Due and Still Accruing 2,967,000    
Nonaccrual Loans 769,000    
Covered Loans
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Covered Loans Loss Share Receivable   113,700,000 131,900,000
30 to 59 Days Past Due 15,893,000 17,184,000 21,996,000
60 to 89 Days Past Due 7,089,000 25,086,000 25,573,000
Equal to Greater than 90 Days Past Due 164,075,000 240,864,000 263,019,000
Total Past Due 187,057,000 283,134,000 310,588,000
Current 397,233,000 622,257,000 732,470,000
Total Loans 584,290,000 905,391,000 1,043,058,000
Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 3,729,000 931,000 2,962,000
60 to 89 Days Past Due 730,000 981,000 973,000
Equal to Greater than 90 Days Past Due 12,493,000 24,111,000 27,035,000
Total Past Due 16,952,000 26,023,000 30,970,000
Current 66,287,000 102,486,000 131,721,000
Total Loans 83,239,000 128,509,000 162,691,000
Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 1,299,000 4,130,000 4,965,000
60 to 89 Days Past Due 5,672,000 15,019,000 21,919,000
Equal to Greater than 90 Days Past Due 117,839,000 172,444,000 184,067,000
Total Past Due 124,810,000 191,593,000 210,951,000
Current 184,087,000 348,002,000 412,323,000
Total Loans 308,897,000 539,595,000 623,274,000
Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 30,089,000 50,333,000 61,776,000
Covered Loans | Commercial Construction Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 943,000 589,000 0
60 to 89 Days Past Due 0 7,925,000 998,000
Equal to Greater than 90 Days Past Due 25,996,000 34,314,000 41,325,000
Total Past Due 26,939,000 42,828,000 42,323,000
Current 3,150,000 7,505,000 19,453,000
Total Loans 30,089,000 50,333,000 61,776,000
Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Covered Loans | Installment
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 57,000 1,000 2,289,000
60 to 89 Days Past Due 4,000 65,000 0
Equal to Greater than 90 Days Past Due 0 21,000 35,000
Total Past Due 61,000 87,000 2,324,000
Current 6,300,000 8,102,000 6,036,000
Total Loans 6,361,000 8,189,000 8,360,000
Covered Loans | Home equity lines
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 1,532,000 1,528,000 1,398,000
60 to 89 Days Past Due 22,000 654,000 435,000
Equal to Greater than 90 Days Past Due 1,781,000 2,211,000 1,981,000
Total Past Due 3,335,000 4,393,000 3,814,000
Current 99,574,000 112,832,000 119,364,000
Total Loans 102,909,000 117,225,000 123,178,000
Covered Loans | Consumer Residential Mortgages Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
30 to 59 Days Past Due 8,333,000 10,005,000 10,382,000
60 to 89 Days Past Due 661,000 442,000 1,248,000
Equal to Greater than 90 Days Past Due 5,966,000 7,763,000 8,576,000
Total Past Due 14,960,000 18,210,000 20,206,000
Current 37,835,000 43,330,000 43,573,000
Total Loans 52,795,000 61,540,000 63,779,000
Grade 1 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 32,144,000 42,211,000 37,327,000
Grade 1 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,216,000 0 0
Grade 1 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 1 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 9,932,000 13,119,000 13,785,000
Grade 1 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 1 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 1 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 1 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 1 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 1 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 1 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 1 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 2 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 82,906,000 114,480,000 105,504,000
Grade 2 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,711,000 3,138,000 3,170,000
Grade 2 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 2 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,173,000 179,000 190,000
Grade 2 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 96,000    
Grade 2 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 2 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 2 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 2 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 996,000 1,526,000 1,742,000
Grade 2 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 2 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 2 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 3 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 867,186,000 661,692,000 573,561,000
Grade 3 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 368,918,000 254,749,000 278,017,000
Grade 3 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 27,041,000 17,652,000 19,312,000
Grade 3 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 29,631,000 20,042,000 8,857,000
Grade 3 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 27,827,000    
Grade 3 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 29,123,000    
Grade 3 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 3 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 3 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 92,000
Grade 3 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 449,000
Grade 3 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 3 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 4 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,796,101,000 2,408,669,000 2,215,336,000
Grade 4 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,770,768,000 1,845,686,000 1,738,257,000
Grade 4 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 300,154,000 311,271,000 282,438,000
Grade 4 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 152,778,000 104,037,000 87,259,000
Grade 4 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 849,858,000    
Grade 4 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 744,362,000    
Grade 4 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 18,182,000    
Grade 4 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 4 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 45,557,000 73,480,000 91,101,000
Grade 4 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 116,056,000 214,987,000 240,630,000
Grade 4 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 601,000 476,000 494,000
Grade 4 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 5 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 48,912,000 44,969,000 60,803,000
Grade 5 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 30,502,000 53,675,000 54,655,000
Grade 5 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 323,000 3,057,000 2,893,000
Grade 5 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 3,325,000 1,561,000 514,000
Grade 5 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 60,968,000    
Grade 5 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 102,256,000    
Grade 5 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 5 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 5 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 624,000 3,215,000 3,844,000
Grade 5 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 15,364,000 30,708,000 39,883,000
Grade 5 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 943,000 1,331,000 0
Grade 5 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 6 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 36,846,000 34,505,000 56,700,000
Grade 6 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 52,297,000 67,168,000 79,243,000
Grade 6 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,344,000 3,567,000 4,462,000
Grade 6 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,068,000 298,000 333,000
Grade 6 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 44,471,000    
Grade 6 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 93,919,000    
Grade 6 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 6 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 6 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 33,957,000 47,468,000 61,192,000
Grade 6 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 176,286,000 292,158,000 340,063,000
Grade 6 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 26,401,000 45,838,000 58,586,000
Grade 6 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 7 | Originated Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 7 | Originated Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 7 | Originated Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 7 | Originated Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0 0 0
Grade 7 | Acquired Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 7 | Acquired Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 7 | Acquired Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 7 | Acquired Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 0    
Grade 7 | Covered Loans | C&I
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,105,000 2,820,000 4,720,000
Grade 7 | Covered Loans | CRE
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 1,191,000 1,742,000 2,249,000
Grade 7 | Covered Loans | Construction
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans 2,144,000 2,688,000 2,696,000
Grade 7 | Covered Loans | Commercial Leases Financing Receivable
      
Financing Receivable, Recorded Investment, Past Due [Line Items]      
Total Loans $ 0 $ 0 $ 0