Loans (Non-Accrual Loans, Segregated by Class of Loan and Year of Origination) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Nonaccrual	$ 70,482	$ 78,866
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	1,939,446	1,630,146
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	668,014	567,373
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	326,337	508,217
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	325,100	289,789
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	193,156	308,636
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	438,433	279,503
Financing Receivable, Excluding Accrued Interest, Revolving	2,329,250	2,413,231
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	87,244	112,637
Financing Receivable, Nonaccrual	50,659	46,004
Commercial and Industrial Total Energy Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	317,492	388,092
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	107,078	24,187
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	11,724	38,109
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	36,347	18,161
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	14,228	1,608
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	3,299	4,367
Financing Receivable, Excluding Accrued Interest, Revolving	599,073	647,099
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	5,428	7,272
Financing Receivable, Nonaccrual	3,023	4,079
Commercial Real Estate Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	776,304	513,406
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	429,027	438,332
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	505,975	885,231
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	810,342	576,591
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	471,705	336,372
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	801,511	738,753
Financing Receivable, Excluding Accrued Interest, Revolving	35,185	81,455
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	157,864	52,061
Financing Receivable, Nonaccrual	7,581	17,643
Commercial Real Estate Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	963,358	678,510
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	594,187	794,587
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	522,869	672,234
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	644,822	551,901
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	419,407	355,142
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	489,526	351,564
Financing Receivable, Excluding Accrued Interest, Revolving	116,017	94,114
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	22,842	44,967
Financing Receivable, Nonaccrual	465	2,144
Construction Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	721,029	1,028,638
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	783,516	724,863
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	445,659	622,246
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	310,934	204,080
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	89,634	15,547
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	10,822	5,884
Financing Receivable, Excluding Accrued Interest, Revolving	174,922	201,098
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	13,353	947
Financing Receivable, Nonaccrual	1,874	2,133
Total consumer real estate loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Nonaccrual	6,615	6,511
Consumer Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Nonaccrual	265	352
Nonperforming Financial Instruments [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	30,394	28,675
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,490	5,985
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	8,991	7,286
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	4,764	4,345
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	2,336	1,731
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	8,276	7,172
Financing Receivable, Excluding Accrued Interest, Revolving	7,139	4,475
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	7,092	19,197
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	27,340	20,819
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,306	2,915
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	8,115	4,053
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	4,612	1,592
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	1,307	335
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	1,099	2,144
Financing Receivable, Excluding Accrued Interest, Revolving	4,656	1,186
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	2,224	12,960
Nonperforming Financial Instruments [Member] | Commercial and Industrial Total Energy Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	56
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	1,304	1,321
Financing Receivable, Excluding Accrued Interest, Revolving	1,719	2,702
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	0	0
Nonperforming Financial Instruments [Member] | Commercial Real Estate Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	3,054	7,856
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	2,671
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	876	3,233
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	152	1,529
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	1,248
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	3,499	1,106
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	0	0
Nonperforming Financial Instruments [Member] | Commercial Real Estate Non-Owner Occupied
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	278
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	465	1,866
Nonperforming Financial Instruments [Member] | Construction Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	1,224
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	1,029	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	107	121
Financing Receivable, Excluding Accrued Interest, Revolving	0	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	738	788
Nonperforming Financial Instruments [Member] | Total consumer real estate loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	0	47
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	92
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	2,267	2,202
Financing Receivable, Excluding Accrued Interest, Revolving	683	587
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	3,665	3,583
Nonperforming Financial Instruments [Member] | Consumer Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Excluding Accrued Interest, Year One, Originated, Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year	184	352
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year	0	0
Financing Receivable, Excluding Accrued Interest, Revolving	81	0
Financing Receivable, Excluding Accrued Interest, Revolving, Converted to Term Loan	$ 0	$ 0