Loans (Weighted Average Risk Grades for All Commercial Loans by Class) (Detail) $ in Thousands	Dec. 31, 2020 USD ($) Grade	Dec. 31, 2019 USD ($) Grade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts	$ 17,481,309	$ 14,750,332
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,397,141
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	608,464
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	343,825
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	258,737
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	121,652
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	119,250
Financing Receivable, Revolving	2,019,121
Loans, net of unearned discounts	$ 4,955,341	$ 5,187,466
Weighted Average Risk Grade | Grade	6.45	6.44
Commercial Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.38
Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 87,151
Weighted Average Risk Grade | Grade	7.51
Commercial Portfolio Segment [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.19
Commercial Portfolio Segment [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.88
Commercial Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.22
Commercial Portfolio Segment [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.39
Commercial Portfolio Segment [Member] | 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.32
Commercial Portfolio Segment [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.84
Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 524,270
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	48,853
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	16,310
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,083
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,174
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	5,346
Financing Receivable, Revolving	592,094
Loans, net of unearned discounts	$ 1,235,198	$ 1,652,882
Weighted Average Risk Grade | Grade	6.85	6.39
Commercial and Industrial Total Energy Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.45
Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 38,068
Weighted Average Risk Grade | Grade	8.20
Commercial and Industrial Total Energy Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.86
Commercial and Industrial Total Energy Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	9.57
Commercial and Industrial Total Energy Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.68
Commercial and Industrial Total Energy Loans [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.40
Commercial and Industrial Total Energy Loans [Member] | 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.85
Commercial and Industrial Total Energy Loans [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.06
Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 1,629,815
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,086,073
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	883,701
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	764,197
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	495,617
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	804,894
Financing Receivable, Revolving	74,403
Loans, net of unearned discounts	$ 5,796,653	$ 4,883,580
Weighted Average Risk Grade | Grade	7.34	7.01
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.54
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 57,953
Weighted Average Risk Grade | Grade	7.12
Commercial Real Estate, Buildings, Land and Other [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.13
Commercial Real Estate, Buildings, Land and Other [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.36
Commercial Real Estate, Buildings, Land and Other [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.54
Commercial Real Estate, Buildings, Land and Other [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.55
Commercial Real Estate, Buildings, Land and Other [Member] | 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.54
Commercial Real Estate, Buildings, Land and Other [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.20
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 420,477
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	452,644
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	196,170
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,915
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,144
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,758
Financing Receivable, Revolving	147,575
Loans, net of unearned discounts	$ 1,223,814	$ 1,312,659
Weighted Average Risk Grade | Grade	7.22	7.31
Construction Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.29
Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 1,131
Weighted Average Risk Grade | Grade	9.00
Construction Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.82
Construction Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.18
Construction Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.08
Construction Loans [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.95
Construction Loans [Member] | 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.30
Construction Loans [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.44
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 2,050,292
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,538,717
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,079,871
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	767,112
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	496,761
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	806,652
Financing Receivable, Revolving	221,978
Loans, net of unearned discounts	$ 7,020,467	$ 6,196,239
Weighted Average Risk Grade | Grade	7.32	7.07
Commercial Real Estate Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.37
Commercial Real Estate Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 59,084
Weighted Average Risk Grade | Grade	7.15
Commercial Real Estate Portfolio Segment [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.06
Commercial Real Estate Portfolio Segment [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.31
Commercial Real Estate Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.64
Commercial Real Estate Portfolio Segment [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.56
Commercial Real Estate Portfolio Segment [Member] | 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.54
Commercial Real Estate Portfolio Segment [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.20
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 1,300,844
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	552,885
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	290,088
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	226,232
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	107,063
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	113,458
Financing Receivable, Revolving	1,852,341
Loans, net of unearned discounts	$ 4,506,121	$ 4,788,857
Weighted Average Risk Grade | Grade	6.13	6.17
Risk Grade One To Eight [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 63,210
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	403,156
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	18,911
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	9,759
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,083
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,415
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,326
Financing Receivable, Revolving	494,946
Loans, net of unearned discounts	$ 968,144	$ 1,488,301
Weighted Average Risk Grade | Grade	5.99	5.90
Risk Grade One To Eight [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 27,548
Risk Grade One To Eight [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,544,558
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	947,102
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	749,879
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	605,152
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	432,941
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	661,301
Financing Receivable, Revolving	56,600
Loans, net of unearned discounts	$ 5,047,873	$ 4,523,271
Weighted Average Risk Grade | Grade	6.97	6.78
Risk Grade One To Eight [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 50,340
Risk Grade One To Eight [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	374,661
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	436,077
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	168,517
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	67
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,144
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,758
Financing Receivable, Revolving	127,801
Loans, net of unearned discounts	$ 1,110,025	$ 1,274,098
Weighted Average Risk Grade | Grade	6.99	7.25
Risk Grade One To Eight [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 0
Risk Grade One To Eight [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 5,797,369
Weighted Average Risk Grade | Grade		6.88
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	50,785
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	37,865
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	33,961
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	20,851
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	12,348
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	5,510
Financing Receivable, Revolving	85,756
Loans, net of unearned discounts	256,198	$ 247,212
Weighted Average Risk Grade | Grade		9.00
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	9,122
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	105,772
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,272
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,743
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	18,194
Loans, net of unearned discounts	133,547	$ 32,163
Weighted Average Risk Grade | Grade		9.00
Risk Grade Nine [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	5,566
Risk Grade Nine [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	45,527
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	81,224
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	75,893
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	45,485
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	26,745
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	37,728
Financing Receivable, Revolving	10,521
Loans, net of unearned discounts	325,227	$ 163,714
Weighted Average Risk Grade | Grade		9.00
Risk Grade Nine [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	2,104
Risk Grade Nine [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	37,430
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,567
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,848
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	14,311
Loans, net of unearned discounts	72,287	$ 21,509
Weighted Average Risk Grade | Grade		9.00
Risk Grade Nine [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	1,131
Risk Grade Nine [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 185,223
Weighted Average Risk Grade | Grade		9.00
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	31,333
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	7,361
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	11,379
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	6,749
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	710
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	113
Financing Receivable, Revolving	65,180
Loans, net of unearned discounts	125,977	$ 71,472
Weighted Average Risk Grade | Grade		10.00
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	3,152
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	703
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,049
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,339
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	759
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	37,637
Loans, net of unearned discounts	46,427	$ 51,898
Weighted Average Risk Grade | Grade		10.00
Risk Grade Ten [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	1,940
Risk Grade Ten [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	14,183
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	36,414
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	45,014
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	71,814
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	25,343
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	60,225
Financing Receivable, Revolving	200
Loans, net of unearned discounts	258,454	$ 103,626
Weighted Average Risk Grade | Grade		10.00
Risk Grade Ten [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	5,261
Risk Grade Ten [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	5,846
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	27,653
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	5,463
Loans, net of unearned discounts	38,962	$ 15,243
Weighted Average Risk Grade | Grade		10.00
Risk Grade Ten [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Ten [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 118,869
Weighted Average Risk Grade | Grade		10.00
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,700
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	7,002
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,551
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,416
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,426
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	140
Financing Receivable, Revolving	15,005
Loans, net of unearned discounts	47,196	$ 53,887
Weighted Average Risk Grade | Grade		11.00
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	8,956
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,218
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,849
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,325
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	661
Financing Receivable, Revolving	30,124
Loans, net of unearned discounts	63,912	$ 14,760
Weighted Average Risk Grade | Grade		11.00
Risk Grade Eleven [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	2,735
Risk Grade Eleven [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	22,633
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,302
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	11,916
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	39,727
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	8,655
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	42,904
Financing Receivable, Revolving	6,977
Loans, net of unearned discounts	149,362	$ 84,057
Weighted Average Risk Grade | Grade		11.00
Risk Grade Eleven [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	248
Risk Grade Eleven [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	856
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Loans, net of unearned discounts	856	$ 1,144
Weighted Average Risk Grade | Grade		11.00
Risk Grade Eleven [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Eleven [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 85,201
Weighted Average Risk Grade | Grade		11.00
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	6,899
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,399
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,195
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,005
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	105
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	29
Financing Receivable, Revolving	480
Loans, net of unearned discounts	14,528	$ 18,189
Weighted Average Risk Grade | Grade		12.00
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	2,416
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,580
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	654
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	359
Financing Receivable, Revolving	6,768
Loans, net of unearned discounts	13,741	$ 45,514
Weighted Average Risk Grade | Grade		12.00
Risk Grade Twelve [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	279
Risk Grade Twelve [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,714
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,031
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	999
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,019
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,683
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,736
Financing Receivable, Revolving	42
Loans, net of unearned discounts	15,224	$ 8,529
Weighted Average Risk Grade | Grade		12.00
Risk Grade Twelve [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Twelve [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,684
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Loans, net of unearned discounts	1,684	$ 665
Weighted Average Risk Grade | Grade		12.00
Risk Grade Twelve [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Twelve [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 9,194
Weighted Average Risk Grade | Grade		12.00
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,580
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	952
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	651
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	359
Loans, net of unearned discounts	5,321	$ 7,849
Weighted Average Risk Grade | Grade		13.00
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	295
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,320
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,192
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,490
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	4,425
Loans, net of unearned discounts	9,427	$ 20,246
Weighted Average Risk Grade | Grade		13.00
Risk Grade Thirteen [Member] | Commercial and Industrial Total Energy Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Thirteen [Member] | Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	200
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	250
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	63
Loans, net of unearned discounts	513	$ 383
Weighted Average Risk Grade | Grade		13.00
Risk Grade Thirteen [Member] | Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	0
Risk Grade Thirteen [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Loans, net of unearned discounts	0	$ 0
Weighted Average Risk Grade | Grade		13.00
Risk Grade Thirteen [Member] | Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 0
Risk Grade Thirteen [Member] | Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts		$ 383
Weighted Average Risk Grade | Grade		13.00