Loans (Weighted Average Risk Grades for All Commercial Loans by Class) (Detail) $ in Thousands	Dec. 31, 2021 USD ($) Grade	Dec. 31, 2020 USD ($) Grade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts	$ 16,336,397	$ 17,481,309
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,630,524	1,397,141
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	693,324	608,464
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	392,408	343,825
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	214,163	258,737
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	150,922	121,652
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	143,292	119,250
Financing Receivable, Revolving	2,075,632	2,019,121
Loans, net of unearned discounts	$ 5,364,954	$ 4,955,341
Weighted Average Risk Grade | Grade	6.22	6.45
Commercial Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.21	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	$ 64,689	$ 87,151
Weighted Average Risk Grade | Grade	8.04	7.51
Commercial Portfolio Segment [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.91
Commercial Portfolio Segment [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.30	6.19
Commercial Portfolio Segment [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.89	6.88
Commercial Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.06	7.22
Commercial Portfolio Segment [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.91	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	5.80	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	$ 475,023	$ 524,270
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	9,539	48,853
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	20,991	16,310
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	9,480	8,083
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,110	2,174
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	5,638	5,346
Financing Receivable, Revolving	483,020	592,094
Loans, net of unearned discounts	$ 1,077,792	$ 1,235,198
Weighted Average Risk Grade | Grade	6.06	6.85
Commercial and Industrial Total Energy Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.61	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	$ 70,991	$ 38,068
Weighted Average Risk Grade | Grade	6.46	8.20
Commercial and Industrial Total Energy Loans [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.21
Commercial and Industrial Total Energy Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.81	6.86
Commercial and Industrial Total Energy Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	9.34	9.57
Commercial and Industrial Total Energy Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.60	8.68
Commercial and Industrial Total Energy Loans [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.12	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	7.63	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	$ 1,761,554	$ 1,629,815
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,257,055	1,086,073
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,008,366	883,701
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	632,020	764,197
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	612,767	495,617
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	825,249	804,894
Financing Receivable, Revolving	59,595	74,403
Loans, net of unearned discounts	$ 6,272,339	$ 5,796,653
Weighted Average Risk Grade | Grade	7.22	7.34
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.06	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	$ 115,733	$ 57,953
Weighted Average Risk Grade | Grade	7.02	7.12
Commercial Real Estate, Buildings, Land and Other [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.19
Commercial Real Estate, Buildings, Land and Other [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.18	7.13
Commercial Real Estate, Buildings, Land and Other [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.35	7.36
Commercial Real Estate, Buildings, Land and Other [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.39	7.54
Commercial Real Estate, Buildings, Land and Other [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.34	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	7.01	7.20
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 693,192	$ 420,477
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	268,080	452,644
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	178,226	196,170
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,339	2,915
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	484	1,144
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,930	1,758
Financing Receivable, Revolving	160,020	147,575
Loans, net of unearned discounts	$ 1,304,271	$ 1,223,814
Weighted Average Risk Grade | Grade	7.06	7.22
Construction Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.79	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	$ 0	$ 1,131
Weighted Average Risk Grade | Grade	0	9.00
Construction Loans [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.17
Construction Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.56	6.82
Construction Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.60	7.18
Construction Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.51	8.08
Construction Loans [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	8.92	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	6.73	6.44
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 2,454,746	$ 2,050,292
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,525,135	1,538,717
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,186,592	1,079,871
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	634,359	767,112
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	613,251	496,761
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	827,179	806,652
Financing Receivable, Revolving	219,615	221,978
Loans, net of unearned discounts	$ 7,576,610	$ 7,020,467
Weighted Average Risk Grade | Grade	7.19	7.32
Commercial Real Estate Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.86	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	$ 115,733	$ 59,084
Weighted Average Risk Grade | Grade	7.02	7.15
Commercial Real Estate Portfolio Segment [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.18
Commercial Real Estate Portfolio Segment [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.07	7.06
Commercial Real Estate Portfolio Segment [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.39	7.31
Commercial Real Estate Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.39	7.64
Commercial Real Estate Portfolio Segment [Member] | 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.34	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	7.00	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	$ 1,567,883	$ 1,300,844
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	657,529	552,885
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	350,563	290,088
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	179,209	226,232
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	146,064	107,063
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	131,201	113,458
Financing Receivable, Revolving	1,987,061	1,852,341
Loans, net of unearned discounts	$ 5,063,847	$ 4,506,121
Weighted Average Risk Grade | Grade	6.01	6.13
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	$ 44,337	$ 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	445,489	403,156
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	8,075	18,911
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	9,259	9,759
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	6,441	8,083
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,110	1,415
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,368	4,326
Financing Receivable, Revolving	464,454	494,946
Loans, net of unearned discounts	$ 1,008,370	$ 968,144
Weighted Average Risk Grade | Grade	5.78	5.99
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	$ 67,174	$ 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	1,707,550	1,544,558
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,096,274	947,102
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	874,130	749,879
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	533,362	605,152
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	492,492	432,941
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	713,268	661,301
Financing Receivable, Revolving	52,150	56,600
Loans, net of unearned discounts	$ 5,574,922	$ 5,047,873
Weighted Average Risk Grade | Grade	6.91	6.97
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	$ 105,696	$ 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	657,471	374,661
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	262,176	436,077
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	178,226	168,517
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,339	67
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	38	1,144
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,930	1,758
Financing Receivable, Revolving	160,020	127,801
Loans, net of unearned discounts	$ 1,262,200	$ 1,110,025
Weighted Average Risk Grade | Grade	6.99	6.99
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	$ 0
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	32,866	50,785
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	21,094	37,865
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	24,683	33,961
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	26,327	20,851
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	612	12,348
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	11,419	5,510
Financing Receivable, Revolving	65,131	85,756
Loans, net of unearned discounts	187,870	256,198
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	5,738	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	19,274	105,772
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	611	2,272
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,775	1,743
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	187	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	724	0
Financing Receivable, Revolving	11,635	18,194
Loans, net of unearned discounts	36,622	133,547
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	2,416	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	16,302	45,527
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	145,340	81,224
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	52,427	75,893
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	43,806	45,485
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	27,188	26,745
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	27,767	37,728
Financing Receivable, Revolving	4,445	10,521
Loans, net of unearned discounts	321,533	325,227
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	4,258	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	35,721	37,430
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,956	16,567
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	2,848
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	446	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	14,311
Loans, net of unearned discounts	41,123	72,287
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	0	1,131
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	27,961	31,333
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,273	7,361
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4,047	11,379
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4,357	6,749
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,021	710
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	98	113
Financing Receivable, Revolving	14,091	65,180
Loans, net of unearned discounts	59,137	125,977
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	1,289	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	0	703
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	101	4,049
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	631	1,339
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	511	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	759
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	37,637
Loans, net of unearned discounts	1,773	46,427
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	530	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	28,209	14,183
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	13,813	36,414
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	69,643	45,014
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	46,250	71,814
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	64,950	25,343
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	46,582	60,225
Financing Receivable, Revolving	0	200
Loans, net of unearned discounts	269,447	258,454
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	0	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	0	5,846
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	27,653
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	5,463
Loans, net of unearned discounts	0	38,962
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	0
Risk Grade Eleven [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,178	4,700
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,572	7,002
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	8,068	6,551
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,450	3,416
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,460	1,426
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	221	140
Financing Receivable, Revolving	4,714	15,005
Loans, net of unearned discounts	31,518	47,196
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	7,855	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	10,260	12,218
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	752	16,849
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,968	1,325
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,016	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	546	661
Financing Receivable, Revolving	0	30,124
Loans, net of unearned discounts	16,594	63,912
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	52	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	3,455	22,633
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,321	16,302
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	8,720	11,916
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	7,788	39,727
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	26,107	8,655
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	34,970	42,904
Financing Receivable, Revolving	3,000	6,977
Loans, net of unearned discounts	91,140	149,362
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	5,779	248
Risk Grade Eleven [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	856
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Loans, net of unearned discounts	0	856
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	0
Risk Grade Twelve [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	456	6,899
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,495	2,399
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,828	1,195
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,756	1,005
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	347	105
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	353	29
Financing Receivable, Revolving	613	480
Loans, net of unearned discounts	12,535	14,528
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	2,687	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	0	1,101
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	4,580
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,888	654
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	246	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	359
Financing Receivable, Revolving	4,000	6,768
Loans, net of unearned discounts	8,953	13,741
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	819	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	5,838	2,714
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	307	5,031
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,446	999
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	814	2,019
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,030	1,683
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,662	2,736
Financing Receivable, Revolving	0	42
Loans, net of unearned discounts	15,097	15,224
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	0
Risk Grade Twelve [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	0	1,684
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	748	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Loans, net of unearned discounts	748	1,684
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	0
Risk Grade Thirteen [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	180	2,580
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,361	952
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,219	651
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	64	484
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	418	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	4,022	359
Loans, net of unearned discounts	10,047	5,321
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	2,783	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	0	1,320
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	2,192
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,470	1,490
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,079	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	2,931	4,425
Loans, net of unearned discounts	5,480	9,427
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	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	200
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	250
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	63
Loans, net of unearned discounts	200	513
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	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	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	200	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	0	0
Loans, net of unearned discounts	200	0
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	$ 0