Loans (Weighted Average Risk Grades for All Commercial Loans by Class) (Detail) $ in Thousands	Dec. 31, 2023 USD ($) Grade	Dec. 31, 2022 USD ($) Grade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned discounts	$ 18,824,251	$ 17,154,969
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,619,306	1,703,185
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	768,246	657,039
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	491,938	498,213
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	364,446	241,997
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	182,089	138,541
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	219,766	195,754
Financing Receivable, Revolving	2,247,752	2,170,182
Loans, net of unearned discounts	$ 5,959,133	$ 5,674,798
Weighted Average Risk Grade | Grade	6.60	6.39
Commercial Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.50	6.26
Commercial Portfolio Segment [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 65,590	$ 69,887
Weighted Average Risk Grade | Grade	8.48	7.68
Commercial Portfolio Segment [Member] | 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.53
Commercial Portfolio Segment [Member] | 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.05	6.37
Commercial Portfolio Segment [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.26	7.05
Commercial Portfolio Segment [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.87	6.01
Commercial Portfolio Segment [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.01	6.59
Commercial Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade		6.87
Commercial Portfolio Segment [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.04	5.55
Commercial and Industrial Total Energy Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 277,722	$ 352,224
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	61,500	100,862
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	74,631	5,312
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,835	8,659
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	6,876	3,078
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,541	2,913
Financing Receivable, Revolving	495,329	408,022
Loans, net of unearned discounts	$ 935,265	$ 925,729
Weighted Average Risk Grade | Grade	6.05	5.67
Commercial and Industrial Total Energy Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	5.75	5.18
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	$ 10,831	$ 44,659
Weighted Average Risk Grade | Grade	7.33	5.69
Commercial and Industrial Total Energy Loans [Member] | 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.19
Commercial and Industrial Total Energy Loans [Member] | 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.07	6.09
Commercial and Industrial Total Energy Loans [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.00	5.65
Commercial and Industrial Total Energy Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.99	7.65
Commercial and Industrial Total Energy Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	10.02	9.64
Commercial and Industrial Total Energy Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade		8.02
Commercial and Industrial Total Energy Loans [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.07	6.59
Commercial Real Estate, Buildings, Land and Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 1,645,223	$ 1,901,888
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,785,624	1,528,173
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,253,062	1,009,197
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	811,574	745,031
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	522,566	410,327
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	953,768	882,021
Financing Receivable, Revolving	229,733	120,958
Loans, net of unearned discounts	$ 7,301,920	$ 6,706,078
Weighted Average Risk Grade | Grade	7.20	7.09
Commercial Real Estate, Buildings, Land and Other [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.49	7.38
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	$ 100,370	$ 108,483
Weighted Average Risk Grade | Grade	6.77	6.43
Commercial Real Estate, Buildings, Land and Other [Member] | 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.23
Commercial Real Estate, Buildings, Land and Other [Member] | 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.18	7.01
Commercial Real Estate, Buildings, Land and Other [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.29	7.26
Commercial Real Estate, Buildings, Land and Other [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.22	7.14
Commercial Real Estate, Buildings, Land and Other [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.90	7.01
Commercial Real Estate, Buildings, Land and Other [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade		7.33
Commercial Real Estate, Buildings, Land and Other [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.16	6.94
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 560,720	$ 666,024
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	576,374	491,563
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	344,641	130,888
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	28,063	2,236
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	296	486
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,613	1,726
Financing Receivable, Revolving	169,017	181,180
Loans, net of unearned discounts	$ 1,680,724	$ 1,477,247
Weighted Average Risk Grade | Grade	7.45	7.12
Construction Loans [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.34	7.23
Construction Loans [Member] | Revolving Loans Converted to Term
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Revolving, Converted to Term Loan	$ 0	$ 3,144
Weighted Average Risk Grade | Grade	0	5.03
Construction Loans [Member] | 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.44
Construction Loans [Member] | 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.44	7.29
Construction Loans [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.93	7.03
Construction Loans [Member] | 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	2.55	6.43
Construction Loans [Member] | 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.22	7.04
Construction Loans [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade		6.00
Construction Loans [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	6.78	6.76
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	$ 2,205,943	$ 2,567,912
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,361,998	2,019,736
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,597,703	1,140,085
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	839,637	747,267
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	522,862	410,813
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	955,381	883,747
Financing Receivable, Revolving	398,750	302,138
Loans, net of unearned discounts	$ 8,982,644	$ 8,183,325
Weighted Average Risk Grade | Grade	7.24	7.10
Commercial Real Estate Portfolio Segment [Member] | Revolving Credit Facility
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.43	7.29
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	$ 100,370	$ 111,627
Weighted Average Risk Grade | Grade	6.77	6.39
Commercial Real Estate Portfolio Segment [Member] | 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.28
Commercial Real Estate Portfolio Segment [Member] | 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.24	7.08
Commercial Real Estate Portfolio Segment [Member] | 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.43	7.20
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	6.90	7.01
Commercial Real Estate Portfolio Segment [Member] | 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade		7.33
Commercial Real Estate Portfolio Segment [Member] | Prior Years
Accounts, Notes, Loans and Financing Receivable [Line Items]
Weighted Average Risk Grade | Grade	7.15	6.94
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	$ 1,489,026	$ 1,667,274
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	706,210	618,756
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	450,806	485,908
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	349,744	226,835
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	172,656	123,768
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	206,643	192,791
Financing Receivable, Revolving	2,083,490	2,068,891
Loans, net of unearned discounts	$ 5,499,829	$ 5,435,917
Weighted Average Risk Grade | Grade	6.32	6.24
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	$ 41,254	$ 51,694
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	270,710	338,050
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	54,185	99,089
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	73,532	4,917
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,673	3,138
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,819	2,020
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,047	2,850
Financing Receivable, Revolving	451,897	393,957
Loans, net of unearned discounts	$ 869,749	$ 887,182
Weighted Average Risk Grade | Grade	5.73	5.44
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	$ 9,886	$ 43,161
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	1,601,175	1,811,069
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,667,750	1,484,811
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,186,559	956,567
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	747,289	708,942
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	503,303	360,154
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	874,942	800,944
Financing Receivable, Revolving	214,874	111,778
Loans, net of unearned discounts	$ 6,895,358	$ 6,340,028
Weighted Average Risk Grade | Grade	7.03	6.94
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	$ 99,466	$ 105,763
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	538,072	640,948
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	537,705	489,391
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	264,770	128,788
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	28,063	2,236
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	296	486
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,613	1,726
Financing Receivable, Revolving	155,567	163,293
Loans, net of unearned discounts	$ 1,526,086	$ 1,430,012
Weighted Average Risk Grade | Grade	7.27	7.04
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	$ 3,144
Risk Grade Nine [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	57,625	31,275
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	42,618	34,950
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	12,258	3,651
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4,952	5,400
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,641	11,006
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10,383	1,014
Financing Receivable, Revolving	70,142	54,856
Loans, net of unearned discounts	205,244	146,192
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	5,625	4,040
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	1,137	1,561
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	7,315	1,611
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,041	166
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	562
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	456	748
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	17,680	6,434
Loans, net of unearned discounts	27,643	11,112
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	14	30
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	12,173	52,288
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	68,007	13,139
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	28,870	36,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	13,250	22,086
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	16,272	17,699
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	23,214	45,590
Financing Receivable, Revolving	11,143	652
Loans, net of unearned discounts	173,470	189,928
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	541	2,210
Risk Grade Nine [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	3,414	12,865
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	35,565	2,100
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	79,871	2,100
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	8,252	17,887
Loans, net of unearned discounts	127,102	34,952
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	0
Risk Grade Ten [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	63,205	2,294
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,222	724
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,307	845
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	911	4,713
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	4,005	1,341
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	581	114
Financing Receivable, Revolving	35,977	23,880
Loans, net of unearned discounts	109,254	37,596
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	1,046	3,685
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	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	33	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	428
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	291	214
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	494	0
Financing Receivable, Revolving	0	0
Loans, net of unearned discounts	818	642
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	0	0
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	7,671	26,688
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	29,278	11,150
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	17,364	3,735
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	34,672	9,008
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	747	29,683
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,153	5,221
Financing Receivable, Revolving	3,716	5,535
Loans, net of unearned discounts	96,601	91,020
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	0
Risk Grade Ten [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	13,322	859
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	72
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	3,713	0
Loans, net of unearned discounts	17,035	931
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	9,450	2,342
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,837	1,357
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	25,932	6,720
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	7,854	1,807
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,530	1,229
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,153	1,644
Financing Receivable, Revolving	58,134	19,582
Loans, net of unearned discounts	125,261	36,963
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	3,371	2,282
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	0	7,956
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	162
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	25	157
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	106	3,145
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,989	86
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	63
Financing Receivable, Revolving	21,650	0
Loans, net of unearned discounts	25,555	11,569
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	785	0
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	4,105	10,199
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	20,589	19,073
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	20,119	12,631
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	16,363	4,778
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	793	2,525
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	51,739	28,841
Financing Receivable, Revolving	0	2,993
Loans, net of unearned discounts	114,071	81,550
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	363	510
Risk Grade Eleven [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Year One, Originated, Current Fiscal Year	5,912	11,352
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	3,104	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	1,485	0
Loans, net of unearned discounts	10,501	11,352
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	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	359	1,052
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,635	866
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	950	2,972
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,257	1,177
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,006	191
Financing Receivable, Revolving	1	673
Loans, net of unearned discounts	17,102	12,521
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	11,894	5,590
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	5,875	3,995
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	72
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	56	1,386
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,321	10
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	1,402	4,571
Loans, net of unearned discounts	8,800	10,840
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	146	806
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	17,449	1,049
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	150	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0	217
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,451	266
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	720	1,425
Financing Receivable, Revolving	0	0
Loans, net of unearned discounts	19,770	2,957
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	0
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	0
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	0	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	200
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0	223
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	35	270
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0	20
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Revolving	8	2,300
Loans, net of unearned discounts	2,443	5,609
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	2,400	2,596
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	662
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	2,700	3,060
Loans, net of unearned discounts	2,700	4,384
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	662
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	2,650	595
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	2,650	595
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	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	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