CrossFirst Bankshares (CFB) 10-Q 3 May 24 2024 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2024	Apr. 26, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-39028
Entity Registrant Name	CROSSFIRST BANKSHARES, INC.
Entity Incorporation, State or Country Code	KS
Entity Tax Identification Number	26-3212879
Entity Address, Address Line One	11440 Tomahawk Creek Parkway
Entity Address, City or Town	Leawood
Entity Address, State or Province	KS
Entity Address, Postal Zip Code	66211
City Area Code	913
Local Phone Number	901-4516
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	CFB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		49,292,977
Entity Central Index Key	0001458412
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - Unaudited - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash and cash equivalents	$ 206,773	$ 255,229
Available-for-sale securities - taxable	441,157	413,217
Available-for-sale securities - tax-exempt	345,446	353,436
Loans, net of unearned fees	6,249,187	6,127,690
Allowance for credit losses on loans	74,856	73,462
Loans, net of the allowance for credit losses on loans	6,174,331	6,054,228
Premises and equipment, net	70,580	70,869
Restricted equity securities	3,752	3,950
Interest receivable	37,833	37,294
Foreclosed assets held for sale	5,377
Goodwill and other intangible assets, net	30,404	31,335
Bank-owned life insurance	71,266	70,810
Other	92,813	90,312
Total assets	7,479,732	7,380,680
Deposits
Non-interest-bearing	954,240	990,458
Savings, NOW and money market	3,795,770	3,669,726
Time	1,837,136	1,831,092
Total deposits	6,587,146	6,491,276
Federal Home Loan Bank advances	77,840	77,889
Other borrowings	8,911	8,950
Interest payable and other liabilities	90,864	94,422
Total liabilities	6,764,761	6,672,537
Stockholders' equity
Preferred stock, $0.01 par value: Authorized - 5,000,000 shares; issued - 7,750 at March 31, 2024 and December 31, 2023	0	0
Common stock, $0.01 par value: Authorized - 200,000,000 shares; issued - 53,503,391 and 53,326,641 shares at March 31, 2024 and December 31, 2023 respectively	535	533
Treasury stock, at cost: 4,102,925 and 3,990,753 shares held at March 31, 2024 and December 31, 2023 respectively	(59,720)	(58,251)
Additional paid-in capital	544,206	543,556
Retained earnings	290,419	272,351
Accumulated other comprehensive loss	(60,469)	(50,046)
Total stockholders' equity	714,971	708,143
Total liabilities and stockholders' equity	$ 7,479,732	$ 7,380,680

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition - Unaudited (Parenthetical) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Stockholders' equity
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock authorized (in shares)	5,000,000	5,000,000
Preferred stock issued (in shares)	7,750	7,750
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	200,000,000	200,000,000
Common stock issued (in shares)	53,503,391	53,326,641
Treasure stock held (in shares)	4,102,925	3,990,753

Consolidated Statements of Oper

Consolidated Statements of Operations - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest Income
Loans, including fees	$ 110,099	$ 89,618
Available-for-sale securities - taxable	4,528	1,849
Available-for-sale securities - tax-exempt	2,553	3,794
Deposits with financial institutions	1,981	2,014
Dividends on bank stocks	78	262
Total interest income	119,239	97,537
Interest Expense
Deposits	62,111	36,725
Fed funds purchased and repurchase agreements		46
Federal Home Loan Bank Advances	471	2,391
Other borrowings	63	154
Total interest expense	62,645	39,316
Net Interest Income	56,594	58,221
Provision for Credit Losses	1,655	4,421
Net Interest Income after Provision for Credit Losses	54,939	53,800
Non-Interest Income
Service charges and fees on client accounts	2,104	1,829
ATM and credit card interchange income	1,487	1,264
Gain on sale of loans	537	187
Income from bank-owned life insurance	456	411
Swap fees and credit valuation adjustments, net	158	90
Other non-interest income	847	640
Total non-interest income	5,589	4,421
Non-Interest Expense
Salaries and employee benefits	23,585	22,622
Occupancy	3,206	2,974
Professional fees	972	2,618
Deposit insurance premiums	1,906	1,531
Data processing	970	1,242
Advertising	558	752
Software and communication	1,824	1,651
Foreclosed assets, net	229	149
Core deposit intangible amortization	931	822
Other non-interest expense	3,324	3,731
Total non-interest expense	37,505	38,092
Net Income Before Taxes	23,023	20,129
Income tax expense	4,800	4,021
Net Income	$ 18,223	$ 16,108
Basic Earnings Per Common Share (in dollars per share)	$ 0.36	$ 0.33
Diluted Earnings Per Common Share (in dollars per share)	$ 0.36	$ 0.33

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Consolidated Statements of Comprehensive Income - Unaudited
Net Income	$ 18,223	$ 16,108
Other Comprehensive (Loss) Income
Unrealized (loss) gain on available-for-sale securities	(10,870)	14,951
Less: income tax (benefit) expense	(2,196)	3,657
Unrealized (loss) gain on available-for-sale securities	(8,674)	11,294
Reclassification adjustment for realized gain included in income	2	63
Less: income tax expense		15
Less: reclassification adjustment for realized gain included in income, net of income tax	2	48
Unrealized (loss) gain on cash flow hedges	(3,205)	1,540
Less: income tax (benefit) expense	(744)	369
Unrealized (loss) gain on cash flow hedges, net of income tax	(2,461)	1,171
Reclassification adjustment for loss on cash flow hedges	(928)
Less: income tax benefit	(214)
Less: reclassification adjustment for loss on cash flow hedges, net of income tax	(714)
Other comprehensive (loss) income	(10,423)	12,417
Comprehensive Income	$ 7,800	$ 28,525

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - Unaudited - USD ($) $ in Thousands	Preferred Stock	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Beginning balance at Dec. 31, 2022		$ 530		$ 530,658	$ 206,095	$ (64,557)	$ 608,599
Beginning balance (in shares) at Dec. 31, 2022		48,448,215
Beginning balance (Treasury Stock) at Dec. 31, 2022			$ (64,127)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)					16,108		16,108
Other comprehensive gain (loss) - available-for-sale securities						11,246	11,246
Other comprehensive gain (loss) - cash flow hedges						1,171	1,171
Issuance of preferred shares				7,750			7,750
Issuance of preferred shares (in shares)	7,750
Issuance of shares from equity-based awards		$ 2		(623)			(621)
Issuance of shares from equity-based awards (in shares)		152,403
Stock-based compensation				1,238			1,238
Ending balance at Mar. 31, 2023		$ 532		539,023	222,203	(52,140)	645,491
Ending balance (in shares) at Mar. 31, 2023	7,750	48,600,618
Ending balance (Treasury Stock) at Mar. 31, 2023			(64,127)
Beginning balance at Dec. 31, 2023		$ 533		543,556	272,351	(50,046)	$ 708,143
Beginning balance (in shares) at Dec. 31, 2023	7,750	49,335,888					53,326,641
Beginning balance (Treasury Stock) at Dec. 31, 2023			(58,251)				$ (58,251)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)					18,223		18,223
Other comprehensive gain (loss) - available-for-sale securities						(8,676)	(8,676)
Other comprehensive gain (loss) - cash flow hedges						(1,747)	(1,747)
Preferred dividends					(155)		(155)
Issuance of shares from equity-based awards		$ 2		(620)			(618)
Issuance of shares from equity-based awards (in shares)		176,750
Open market common shares repurchases			(1,469)				(1,469)
Open market common shares repurchases (in shares)		(112,172)
Stock-based compensation				1,270			1,270
Ending balance at Mar. 31, 2024		$ 535		$ 544,206	$ 290,419	$ (60,469)	$ 714,971
Ending balance (in shares) at Mar. 31, 2024	7,750	49,400,466					53,503,391
Ending balance (Treasury Stock) at Mar. 31, 2024			$ (59,720)				$ (59,720)

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity - Unaudited (Parenthetical)	3 Months Ended
	Mar. 31, 2024 $ / shares
Consolidated Statements of Stockholders' Equity - Unaudited
Preferred dividends (per share)	$ 20

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities
Net income	$ 18,223	$ 16,108
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,414	2,318
Provision for credit losses	1,655	4,421
Accretion of discounts on loans	(488)	(547)
Accretion of discounts and amortization of premiums on securities	285	926
Stock-based compensation	1,270	1,238
Gain on disposal of fixed assets		(4)
Loss on sale of foreclosed assets and related impairments		102
Gain on sale of loans	(537)	(187)
Origination of loans held for sale	(1,612)
Proceeds from sale of loans held for sale	2,913
Deferred income taxes	3,224	1,640
Net increase in bank owned life insurance	(456)	(411)
Net realized gains on equity securities	(22)
Net realized gains on available-for-sale securities	(2)	(63)
Dividends on FHLB stock	(71)	(261)
Changes in:
Interest receivable	(539)	(878)
Other assets	1,762	2,615
Other liabilities	(8,218)	(2,693)
Net cash provided by operating activities	19,801	24,324
Investing Activities
Net change in loans	(128,665)	(275,817)
Purchases of available-for-sale and equity securities	(45,693)	(93,488)
Proceeds from maturities of available-for-sale securities	13,465	5,714
Proceeds from sale of available-for-sale and equity securities		37,069
Proceeds from the sale of foreclosed assets		173
Purchase of premises and equipment	(1,114)	(2,662)
Proceeds from the sale of premises and equipment and related insurance claims		4
Purchase of restricted equity securities		(8,226)
Proceeds from sale of restricted equity securities	291	4,334
Terminated cash flow hedges	(122)
Net cash used in investing activities	(161,838)	(332,899)
Financing Activities
Net increase (decrease) in demand deposits, savings, NOW and money market accounts	89,826	(244,454)
Net increase in time deposits	6,044	430,407
Net decrease in federal funds sold		(20,000)
Repayment of Federal Home Loan Bank advances	(114)	(12,643)
Net proceeds of lines of credit		110,969
Proceeds from issuance of preferred shares, net of issuance cost		7,750
Issuance of common shares, net of issuance cost	2	2
Proceeds from employee stock purchase plan	240	167
Repurchase of common stock	(1,402)
Acquisition of common stock for tax withholding obligations	(860)	(790)
Dividends paid on preferred stock	(155)
Net cash provided by financing activities	93,581	271,408
Decrease in Cash and Cash Equivalents	(48,456)	(37,167)
Cash and Cash Equivalents, Beginning of Period	255,229	300,138
Cash and Cash Equivalents, End of Period	206,773	262,971
Supplemental Cash Flows Information
Interest paid	61,253	35,459
Income taxes paid		$ 24
Repossessed assets in settlement of loans	$ 5,377

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2024
Nature of Operations and Summary of Significant Accounting Policies
Nature of Operations and Summary of Significant Accounting Policies	Note 1: Nature of Operations and Summary of Significant Accounting Policies Organization and Nature of Operations CrossFirst Bankshares, Inc. (“Bankshares”) is a bank holding company whose principal activities are the ownership and management of its wholly-owned subsidiary, CrossFirst Bank (the “Bank”). In addition, the Bank has three subsidiaries, including CrossFirst Investments, Inc. (“CFI”), which holds investments in marketable securities, CFBSA I, LLC and CFBSA II, LLC. The Bank is engaged in providing a full range of banking and financial services to individual and corporate clients primarily through its branches in: (i) Leawood, Kansas; (ii) Wichita, Kansas; (iii) Kansas City, Missouri; (iv) Oklahoma City, Oklahoma; (v) Tulsa, Oklahoma; (vi) Dallas, Texas; (vii) Fort Worth, Texas; (viii) Frisco, Texas; (ix) Phoenix, Arizona; (x) Tucson, Arizona; (xi) Colorado Springs, Colorado; (xii) Denver, Colorado; and (xiii) Clayton, New Mexico. Basis of Presentation The accompanying interim unaudited consolidated financial statements serve to update the CrossFirst Bankshares, Inc. Annual Report on Form 10-K for the year ended December 31, 2023 and include the consolidated accounts of Bankshares, the Bank, CFI, CFBSA I, LLC and CFBSA II, LLC (together, referred to herein as the “Company”). The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and where applicable, with general practices in the banking industry or guidelines prescribed by bank regulatory agencies. However, they may not include all information and notes necessary to constitute a complete set of financial statements under GAAP applicable to annual periods and accordingly should be read in conjunction with the financial information contained in the Company's most recent Annual Report on Form 10-K. The unaudited consolidated financial statements reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the results presented. All such adjustments are of a normal recurring nature. All significant intercompany balances and transactions have been eliminated in consolidation. Certain reclassifications of prior years' amounts are made whenever necessary to conform to current period presentation. The results of operations for the interim period are not necessarily indicative of the results that may be expected for the full year or any other interim period. All amounts are in thousands, except share data, or as otherwise noted. GAAP requires management to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosures of contingent assets and liabilities. By their nature, estimates are based on judgment and available information. Management has made significant estimates in certain areas, such as the fair values of financial instruments, and the allowance for credit losses (“ACL”). Because of the inherent uncertainties associated with any estimation process and future changes in market and economic conditions, it is possible that actual results could differ significantly from those estimates. The Company's significant accounting policies followed in the preparation of the unaudited consolidated financial statements are disclosed in Note 1 of the audited financial statements and notes for the year ended December 31, 2023 and are contained in the Company's Annual Report on Form 10-K for that period. There have been no significant changes to the application of significant accounting policies since December 31, 2023. Related Party Transactions The Bank extends credit and receives deposits from related parties. In management’s opinion, the loans and deposits were made in the ordinary course of business and made on similar terms as those prevailing at the time with other persons. Related party loans totaled $10 million and $12 million, while related party deposits totaled $105 million and $106 million, at March 31, 2024 and December 31, 2023, respectively. Related parties also owned Company’s Series A Non-Cumulative Perpetual Preferred Stock, par value $0.01 per share (“Series A Preferred Stock”), at March 31, 2024. ​ Recent Accounting Pronouncements Accounting pronouncements not yet adopted by the Company In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires enhanced disclosures on both an annual and interim basis about significant segment expenses, including for companies with only one reportable segment. This ASU is effective on a retrospective basis for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the impact the adoption of this ASU will have on its consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures which requires updates to rate reconciliation disclosures and information on income taxes paid on an annual basis. This ASU is effective on a prospective basis with retrospective application permitted for annual periods beginning after December 15, 2024. The Company is evaluating the impact the adoption of this ASU will have on its consolidated financial statements and related disclosures. ​

Securities

Securities	3 Months Ended
	Mar. 31, 2024
Securities
Securities	Note 2: Securities Available-for-Sale (“AFS”) Securities AFS securities are summarized as follows as of the dates indicated: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ Approximate ​ Amortized Cost Gains Losses Fair Value ​ ​ (Dollars in thousands) Federal agency obligations ​ $ 9,989 ​ $ 42 ​ $ — ​ $ 10,031 Mortgage-backed - GSE residential ​ ​ 251,994 ​ ​ 280 ​ ​ 23,614 ​ ​ 228,660 Collateralized mortgage obligations - GSE residential ​ 71,105 ​ 301 ​ 1,138 ​ 70,268 State and political subdivisions ​ 394,166 ​ 297 ​ 46,680 ​ 347,783 Small Business Administration loan pools ​ ​ 123,224 ​ ​ 325 ​ ​ 2,256 ​ ​ 121,293 Corporate bonds ​ 9,731 ​ — ​ 1,163 ​ 8,568 Total available-for-sale securities ​ $ 860,209 ​ $ 1,245 ​ $ 74,851 ​ $ 786,603 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ Approximate ​ Amortized Cost Gains Losses Fair Value ​ ​ (Dollars in thousands) Federal agency obligations $ 9,988 ​ $ 84 ​ $ — ​ $ 10,072 U.S. Treasury securities ​ ​ 4,965 ​ ​ 3 ​ ​ — ​ ​ 4,968 Mortgage-backed - GSE residential ​ 233,203 ​ ​ 629 ​ ​ 21,370 ​ ​ 212,462 Collateralized mortgage obligations - GSE residential ​ 50,125 ​ ​ 493 ​ ​ 674 ​ ​ 49,944 State and political subdivisions ​ 396,349 ​ ​ 497 ​ ​ 40,949 ​ ​ 355,897 Small Business Administration loan pools ​ ​ 125,017 ​ ​ 722 ​ ​ 961 ​ ​ 124,778 Corporate bonds ​ 9,740 ​ ​ — ​ ​ 1,208 ​ ​ 8,532 Total available-for-sale securities $ 829,387 ​ $ 2,428 ​ $ 65,162 ​ $ 766,653 ​ The carrying value of securities pledged as collateral was $46 million and $40 million at March 31, 2024 and December 31, 2023, respectively. As of March 31, 2024 and December 31, 2023, the AFS securities had $6 million and $7 million, respectively, of accrued interest, excluded from the amortized cost basis, and presented in “interest receivable” on the consolidated statements of financial condition. The following tables summarize the gross realized gains and losses from sales or maturities of AFS securities as of the dates shown: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, 2024 ​ ​ ​ Gross Realized Gains Gross Realized Losses Net Realized Gain ​ ​ ​ (Dollars in thousands) ​ Available-for-sale securities ​ $ 2 ​ $ — ​ $ 2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, 2023 ​ ​ ​ Gross Realized Gains Gross Realized Losses Net Realized Gain ​ ​ ​ (Dollars in thousands) ​ Available-for-sale securities ​ $ 193 ​ $ (130) ​ $ 63 ​ ​ The following tables summarize AFS securities gross unrealized losses, as of the dates shown, along with the length of time in an unrealized loss position: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Value Losses Securities Value Losses Securities Value Losses Securities ​ ​ (Dollars in thousands) Available-for-Sale Securities ​ ​ ​ ​ ​ ​ ​ Federal agency obligations ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — Mortgage-backed - GSE residential ​ ​ 35,935 ​ ​ 345 12 ​ ​ 132,348 ​ ​ 23,269 51 ​ ​ 168,283 ​ ​ 23,614 63 Collateralized mortgage obligations - GSE residential ​ 47,106 ​ 610 9 ​ 7,863 ​ 528 17 ​ 54,969 ​ 1,138 26 State and political subdivisions ​ 28,063 ​ 282 20 ​ 300,783 ​ 46,398 203 ​ 328,846 ​ 46,680 223 Small Business Administration loan pools ​ ​ 110,885 ​ ​ 2,254 ​ 14 ​ ​ 83 ​ ​ 2 ​ 4 ​ ​ 110,968 ​ ​ 2,256 ​ 18 Corporate bonds ​ — ​ — — ​ 8,568 ​ 1,163 5 ​ 8,568 ​ 1,163 5 Total temporarily impaired AFS securities ​ $ 221,989 ​ $ 3,491 55 ​ $ 449,645 ​ $ 71,360 280 ​ $ 671,634 ​ $ 74,851 335 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Value Losses Securities Value Losses Securities Value Losses Securities ​ ​ (Dollars in thousands) Available-for-Sale Securities ​ Federal agency obligations $ — ​ $ — ​ — ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — U.S. Treasury securities ​ — ​ ​ — ​ — ​ ​ — ​ ​ — ​ — ​ ​ — ​ ​ — ​ — Mortgage-backed - GSE residential ​ 21,523 ​ ​ 56 ​ 5 ​ ​ 137,626 ​ ​ 21,314 ​ 52 ​ ​ 159,149 ​ ​ 21,370 ​ 57 Collateralized mortgage obligations - GSE residential ​ 17,707 ​ ​ 135 ​ 4 ​ ​ 8,469 ​ ​ 539 ​ 17 ​ ​ 26,176 ​ ​ 674 ​ 21 State and political subdivisions ​ 33,577 ​ ​ 207 ​ 20 ​ ​ 287,128 ​ ​ 40,742 ​ 190 ​ ​ 320,705 ​ ​ 40,949 ​ 210 Small Business Administration loan pools ​ 76,380 ​ ​ 959 ​ 11 ​ ​ 91 ​ ​ 2 ​ 4 ​ ​ 76,471 ​ ​ 961 ​ 15 Corporate bonds ​ — ​ ​ — ​ — ​ ​ 8,532 ​ ​ 1,208 ​ 5 ​ ​ 8,532 ​ ​ 1,208 ​ 5 Total temporarily impaired AFS securities $ 149,187 ​ $ 1,357 ​ 40 ​ $ 441,846 ​ $ 63,805 ​ 268 ​ $ 591,033 ​ $ 65,162 ​ 308 ​ Management evaluated all of the AFS securities in an unrealized loss position at March 31, 2024. The unrealized losses in the Company’s investment portfolio were primarily caused by interest rate changes. The Company does not intend to sell the investments, and it is not more likely than not the Company will be required to sell the investments before recovery of their amortized cost basis. The Company did not record any credit losses on AFS securities during the three months ended March 31, 2024 or the year ended December 31, 2023. The amortized cost, fair value, and weighted average yield of AFS securities by contractual maturity, are shown below: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ Within ​ After One to ​ After Five to ​ After ​ ​ ​ ​ One Year Five Years Ten Years Ten Years Total ​ ​ ​ (Dollars in thousands) Available-for-sale securities ​ ​ ​ ​ ​ ​ Federal agency obligations (1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ — ​ $ — ​ $ 9,989 ​ $ 9,989 ​ Estimated fair value ​ $ — ​ $ — ​ $ — ​ $ 10,031 ​ $ 10,031 ​ Weighted average yield (2) ​ — % — % — % 6.38 % 6.38 % Mortgage-backed - GSE residential (1) ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ — ​ $ 852 ​ $ 251,142 ​ $ 251,994 ​ Estimated fair value ​ $ — ​ $ — ​ $ 778 ​ $ 227,882 ​ $ 228,660 ​ Weighted average yield (2) ​ — % — % 2.24 % 3.39 % 3.39 % Collateralized mortgage obligations - GSE residential (1) ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 2,190 ​ $ — ​ $ 68,915 ​ $ 71,105 ​ Estimated fair value ​ $ — ​ $ 2,093 ​ $ — ​ $ 68,175 ​ $ 70,268 ​ Weighted average yield (2) ​ — % 2.78 % — % 5.44 % 5.36 % State and political subdivisions (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ 519 ​ $ 3,597 ​ $ 57,443 ​ $ 332,607 ​ $ 394,166 ​ Estimated fair value ​ $ 527 ​ $ 3,576 ​ $ 56,560 ​ $ 287,120 ​ $ 347,783 ​ Weighted average yield (2) ​ 4.41 % 4.27 % 2.81 % 2.52 % 2.58 % Small Business Administration loan pools (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 10 ​ $ 75 ​ $ 123,139 ​ $ 123,224 ​ Estimated fair value ​ $ — ​ $ 10 ​ $ 73 ​ $ 121,210 ​ $ 121,293 ​ Weighted average yield (2) ​ — % 4.96 % 4.07 % 4.86 % 4.86 % Corporate bonds (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 239 ​ $ 9,492 ​ $ — ​ $ 9,731 ​ Estimated fair value ​ $ — ​ $ 229 ​ $ 8,339 ​ $ — ​ $ 8,568 ​ Weighted average yield (2) ​ — % 4.59 % 5.71 % — % 5.69 % Total available-for-sale securities ​ ​ ​ ​ ​ ​ Amortized cost ​ $ 519 ​ $ 6,036 ​ $ 67,862 ​ $ 785,792 ​ $ 860,209 ​ Estimated fair value ​ $ 527 ​ $ 5,908 ​ $ 65,750 ​ $ 714,418 ​ $ 786,603 ​ Weighted average yield (2) ​ 4.41 % 3.74 % 3.21 % 3.47 % 3.46 % (1) Actual maturities may differ from contractual maturities because issuers may have the rights to call or prepay obligations with or without prepayment penalties. (2) Yields are calculated based on amortized cost using 30/360 day basis. Tax-exempt securities are not tax effected. ​ Equity Securities Equity securities consist of $6.9 million of private equity investments. Equity securities are included in other assets on the consolidated statements of financial condition. The Company elected a measurement alternative for its private equity investments that did not have a readily determinable fair value and did not qualify for the practical expedient to estimate fair value using the net asset value per share. A cost basis was calculated for the equity investments. The recorded balance will adjust for any impairment or any observable price changes for an identical or similar investment of the same issuer. No such events occurred during the three-month period ended March 31, 2024. The following is a summary of the recorded fair value and the unrealized and realized gains and losses recognized in net income on equity securities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, ​ ​ ​ 2024 ​ 2023 ​ ​ ​ (Dollars in thousands) ​ Net gains recognized during the reporting period on equity securities ​ $ 21 ​ $ 10 ​ Less: net gains recognized during the period on equity securities sold during the period ​ 18 ​ — ​ Unrealized gain recognized during the reporting period on equity securities still held at the reporting date ​ $ 3 ​ $ 10 ​ ​

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	3 Months Ended
	Mar. 31, 2024
Loans and Allowance for Credit Losses
Loans and Allowance for Credit Losses	Note 3: Loans and Allowance for Credit Losses The table below shows the loan portfolio composition including carrying value by segment as of the dates shown. The carrying value of loans is net of discounts, fees, costs, and fair value marks of $24 million and $25 million as of March 31, 2024 and December 31, 2023, respectively. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ December 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount % of Loans ​ Amount % of Loans ​ ​ ​ (Dollars in thousands) ​ ​ Commercial and industrial ​ $ 2,179,562 35 % ​ $ 2,160,212 35 % ​ Energy ​ 221,217 4 ​ ​ 214,218 3 ​ ​ Commercial real estate - owner-occupied ​ 577,812 9 ​ ​ 566,253 9 ​ ​ Commercial real estate - non-owner-occupied ​ 2,769,936 44 ​ ​ 2,685,534 44 ​ ​ Residential real estate ​ 468,628 7 ​ ​ 464,095 8 ​ ​ Consumer ​ 32,032 1 ​ ​ 37,378 1 ​ ​ Loans, net of unearned fees ​ 6,249,187 100 % ​ 6,127,690 100 % ​ Less: Allowance for credit losses on loans ​ (74,856) ​ ​ ​ (73,462) ​ ​ Loans, net of the allowance for credit losses on loans ​ $ 6,174,331 ​ ​ ​ ​ $ 6,054,228 ​ ​ ​ Accrued interest of $31 million and $30 million at March 31, 2024 and December 31, 2023, respectively, presented in “interest receivable” on the consolidated statements of financial condition is excluded from the amortized cost basis disclosed in the above table. The Company aggregates the loan portfolio by similar credit risk characteristics. The loan segments are described in additional detail below: ● Commercial and Industrial - The category includes loans and lines of credit to commercial and industrial clients for use in property, plant, and equipment purchases, business operations, expansions and for working capital needs. Loan terms typically require amortizing payments that decrease the outstanding loan balance while the lines of credit typically require interest-only payments with maturities ranging from one- to three-years. Lines of credit allow the borrower to draw down and repay the line of credit based on the borrower’s cash flow needs. Repayment is primarily from the cash flow of a borrower’s principal business operation. Credit risk is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations. ● Energy - The category includes loans to oil and natural gas clients for use in financing working capital needs, exploration and production activities, and acquisitions. The loans are repaid primarily from the conversion of crude oil and natural gas to cash. Credit risk is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations. Energy loans are typically collateralized with the underlying oil and gas reserves. ● Commercial Real Estate - Owner-Occupied - The category includes relationships where the Company is usually the primary provider of financial services for the company and/or the principals and the primary source of repayment is through the cash flows generated by the borrowers’ business operations. Owner-occupied commercial real estate loans are typically secured by a first lien mortgage on real property plus assignments of all leases related to the properties. Credit risk may be impacted by the creditworthiness of a borrower, property values and the local economies in the borrower’s market areas. ● Commercial Real Estate – Non-Owner-Occupied - The category includes loans that typically involve larger principal amounts and repayment of these loans is generally dependent on the leasing income generated from tenants. These are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Additionally, the category includes construction and land development loans that are based upon estimates of costs and estimated value of the completed project. Independent appraisals and a financial analysis of the developers and property owners are completed. Sources of repayment include secondary market permanent loans, sales of developed property or an interim loan commitment from the Company until permanent financing is obtained. These loans are higher risk than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, general economic conditions, and the availability of long-term financing. The category also includes loans that are secured by multifamily properties. Repayment of these loans is primarily dependent on occupancy rates and rental income. Credit risk for non-owner-occupied commercial real estate loans may be impacted by the creditworthiness of a borrower, property values and the local economies in the borrower’s market areas. ● Residential Real Estate - The category includes loans that are generally secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. We also offer open- and closed-ended home equity loans, which are loans generally secured by second lien positions on residential real estate. Credit risk in these loans can be impacted by economic conditions within or outside the borrower’s market areas that might impact either property values or a borrower’s personal income. ● Consumer - The category includes personal lines of credit and various term loans such as automobile loans and loans for other personal purposes. Repayment is primarily dependent on the personal income and credit rating of the borrowers. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the borrower’s market area) and the creditworthiness of a borrower. Risk Ratings The Company uses a series of grades which reflect its assessment of the credit quality of loans based on an analysis of the borrower's financial condition, liquidity and ability to meet contractual debt service requirements. Risk ratings are established for loans at origination and are monitored on an ongoing basis. The rating assigned to a loan reflects the risks posed by the borrower’s expected performance and the transaction’s structure. Performance metrics used to determine a risk rating include, but are not limited to, cash flow adequacy, liquidity, and collateral. A description of the loan risk ratings follows: ● Pass - The category includes loans that are considered satisfactory. The category includes borrowers that generally maintain good liquidity and financial condition, or the credit is currently protected with sales trends remaining flat or declining. Most ratios compare favorably with industry norms and Company policies. Debt is programmed and timely repayment is expected. ● Special Mention - The category includes borrowers that generally exhibit adverse trends in operations or an imbalanced position in their balance sheet that has not reached a point where repayment is jeopardized. Credits are currently protected but, if left uncorrected, the potential weaknesses may result in deterioration of the repayment prospects for the credit or in the Company’s credit or lien position at a future date. These credits are not adversely classified and do not expose the Company to enough risk to warrant adverse classification. ● Substandard - The category includes borrowers that generally exhibit well-defined weakness(es) that jeopardize repayment. Credits are inadequately protected by the current worth and paying capacity of the obligor or of the collateral pledged. A distinct possibility exists that the Company will sustain some loss if deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard. Substandard loans include both performing and non-performing loans and are broken out in the table below. ● Doubtful - The category includes borrowers that exhibit weaknesses inherent in a substandard credit and characteristics that these weaknesses make collection or liquidation in full highly questionable or improbable based on existing facts, conditions, and values. Because of reasonably specific pending factors, which may work to the advantage and strengthening of the assets, classification as a loss is deferred until its more exact status may be determined. ● Loss - Credits that are considered uncollectible or of such little value that their continuance as a bankable asset is not warranted. ​ The following tables present the credit risk profile of the Company’s loan portfolio based on internal rating categories and loan segments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year and Internal Risk Rating ​ Amortized Cost Basis ​ 2024 2023 2022 2021 2020 2019 and Prior Revolving Loans Revolving Loans Converted to Term Loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 162,797 ​ $ 301,628 ​ $ 253,530 ​ $ 158,058 ​ $ 39,382 ​ $ 45,697 ​ $ 1,042,118 ​ $ 57,434 ​ $ 2,060,644 Special mention ​ 1,627 ​ 1,128 ​ 852 ​ 1,966 ​ 12 ​ 43 ​ 24,074 ​ 79 ​ 29,781 Substandard - accrual ​ 1,996 ​ 12,850 ​ 1,848 ​ 6,666 ​ 204 ​ 2,420 ​ 33,699 ​ 18,604 ​ 78,287 Substandard - non-accrual ​ — ​ 2,213 ​ — ​ 264 ​ — ​ 144 ​ 6,105 ​ 129 ​ 8,855 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 1,995 ​ — ​ 1,995 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 166,420 ​ $ 317,819 ​ $ 256,230 ​ $ 166,954 ​ $ 39,598 ​ $ 48,304 ​ $ 1,107,991 ​ $ 76,246 ​ $ 2,179,562 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ 4,583 ​ $ 6,345 ​ $ — ​ $ — ​ $ — ​ $ 208,147 ​ $ 1,944 ​ $ 221,019 Special mention ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 198 ​ — ​ 198 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ - ​ $ 4,583 ​ $ 6,345 ​ $ - ​ $ - ​ $ - ​ $ 208,345 ​ $ 1,944 ​ $ 221,217 Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 6,280 ​ $ 55,911 ​ $ 103,985 ​ $ 116,685 ​ $ 63,069 ​ $ 80,507 ​ $ 76,967 ​ $ 33,023 ​ $ 536,427 Special mention ​ 9,597 ​ 548 ​ 5,291 ​ 9,793 ​ 1,736 ​ 3,114 ​ — ​ 571 ​ 30,650 Substandard - accrual ​ — ​ 2,977 ​ 1,464 ​ — ​ 1,630 ​ 2,800 ​ — ​ 1,528 ​ 10,399 Substandard - non-accrual ​ — ​ — ​ 336 ​ — ​ — ​ — ​ — ​ — ​ 336 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 15,877 ​ $ 59,436 ​ $ 111,076 ​ $ 126,478 ​ $ 66,435 ​ $ 86,421 ​ $ 76,967 ​ $ 35,122 ​ $ 577,812 Commercial real estate - non-owner-occupied ​ ​ ​ — ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 79,617 ​ $ 444,515 ​ $ 862,200 ​ $ 246,477 ​ $ 159,192 ​ $ 114,102 ​ $ 651,858 ​ $ 143,649 ​ $ 2,701,610 Special mention ​ — ​ — ​ 18,908 ​ 7,228 ​ — ​ 18,960 ​ — ​ — ​ 45,096 Substandard - accrual ​ 3,236 ​ 9,619 ​ 4,030 ​ 1,898 ​ 3,627 ​ 298 ​ — ​ — ​ 22,708 Substandard - non-accrual ​ — ​ — ​ 522 ​ — ​ — ​ — ​ — ​ — ​ 522 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 82,853 ​ $ 454,134 ​ $ 885,660 ​ $ 255,603 ​ $ 162,819 ​ $ 133,360 ​ $ 651,858 ​ $ 143,649 ​ $ 2,769,936 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,924 ​ $ 49,465 ​ $ 90,734 ​ $ 80,314 ​ $ 109,425 ​ $ 94,830 ​ $ 36,618 ​ $ — ​ $ 463,310 Special mention ​ — ​ — ​ 1,076 ​ 1,954 ​ 173 ​ — ​ — ​ — ​ 3,203 Substandard - accrual ​ 253 ​ — ​ — ​ 1,310 ​ — ​ 200 ​ 176 ​ — ​ 1,939 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 176 ​ 176 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 2,177 ​ $ 49,465 ​ $ 91,810 ​ $ 83,578 ​ $ 109,598 ​ $ 95,030 ​ $ 36,794 ​ $ 176 ​ $ 468,628 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 45 ​ $ 246 ​ $ 14,638 ​ $ — ​ $ 32,006 Special mention ​ — ​ — ​ — ​ — ​ — ​ 5 ​ — ​ — ​ 5 Substandard - accrual ​ — ​ — ​ — ​ — ​ 21 ​ — ​ — ​ — ​ 21 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 66 ​ $ 251 ​ $ 14,638 ​ $ - ​ $ 32,032 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 251,907 ​ $ 867,097 ​ $ 1,321,175 ​ $ 601,946 ​ $ 371,113 ​ $ 335,382 ​ $ 2,030,346 ​ $ 236,050 ​ $ 6,015,016 Special mention ​ 11,224 ​ 1,676 ​ 26,127 ​ 20,941 ​ 1,921 ​ 22,122 ​ 24,074 ​ 650 ​ 108,735 Substandard - accrual ​ 5,485 ​ 25,446 ​ 7,342 ​ 9,874 ​ 5,482 ​ 5,718 ​ 33,875 ​ 20,132 ​ 113,354 Substandard - non-accrual ​ — ​ 2,213 ​ 858 ​ 264 ​ — ​ 144 ​ 6,105 ​ 305 ​ 9,889 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 2,193 ​ — ​ 2,193 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 268,616 ​ $ 896,432 ​ $ 1,355,502 ​ $ 633,025 ​ $ 378,516 ​ $ 363,366 ​ $ 2,096,593 ​ $ 257,137 ​ $ 6,249,187 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year and Internal Risk Rating ​ Amortized Cost Basis ​ 2023 2022 2021 2020 2019 2018 and Prior Revolving Loans Revolving Loans Converted to Term Loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 379,360 ​ $ 258,182 ​ $ 193,302 ​ $ 54,901 ​ $ 38,762 ​ $ 18,801 ​ $ 1,061,365 ​ $ 53,015 ​ $ 2,057,688 Special mention ​ 2,442 ​ 925 ​ 6,000 ​ 2,674 ​ 1,460 ​ 26 ​ 9,748 ​ 3,175 ​ 26,450 Substandard - accrual ​ 12,655 ​ 1,877 ​ 5,101 ​ 238 ​ 598 ​ 815 ​ 28,652 ​ 16,831 ​ 66,767 Substandard - non-accrual ​ — ​ — ​ 266 ​ 24 ​ — ​ — ​ 6,848 ​ 178 ​ 7,316 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 1,991 ​ — ​ 1,991 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 394,457 ​ $ 260,984 ​ $ 204,669 ​ $ 57,837 ​ $ 40,820 ​ $ 19,642 ​ $ 1,108,604 ​ $ 73,199 ​ $ 2,160,212 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,218 ​ $ 107 ​ $ 213,930 Special mention ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,506 ​ $ 107 ​ $ 214,218 Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 56,236 ​ $ 92,148 ​ $ 119,684 ​ $ 62,072 ​ $ 49,992 ​ $ 32,936 ​ $ 76,782 ​ $ 36,263 ​ $ 526,113 Special mention ​ 10,095 ​ 6,798 ​ 8,522 ​ 1,747 ​ 793 ​ 2,448 ​ — ​ 576 ​ 30,979 Substandard - accrual ​ 2,977 ​ — ​ — ​ 1,635 ​ 770 ​ 2,047 ​ — ​ 1,528 ​ 8,957 Substandard - non-accrual ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 69,308 ​ $ 98,946 ​ $ 128,410 ​ $ 65,454 ​ $ 51,555 ​ $ 37,431 ​ $ 76,782 ​ $ 38,367 ​ $ 566,253 Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 477,238 ​ $ 842,755 ​ $ 242,405 ​ $ 161,845 ​ $ 65,540 ​ $ 50,062 ​ $ 626,998 ​ $ 145,621 ​ $ 2,612,464 Special mention ​ — ​ 18,939 ​ 7,331 ​ — ​ 17,208 ​ 4,052 ​ — ​ — ​ 47,530 Substandard - accrual ​ 10,341 ​ — ​ 2,396 ​ 3,626 ​ — ​ 298 ​ — ​ 439 ​ 17,100 Substandard - non-accrual ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ — ​ — ​ — ​ 8,440 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 487,579 ​ $ 862,407 ​ $ 258,161 ​ $ 167,169 ​ $ 82,748 ​ $ 54,412 ​ $ 626,998 ​ $ 146,060 ​ $ 2,685,534 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 37,676 ​ $ 86,919 ​ $ 82,390 ​ $ 110,853 ​ $ 36,589 ​ $ 62,288 ​ $ 37,619 ​ $ — ​ $ 454,334 Special mention ​ — ​ 813 ​ 3,519 ​ 176 ​ — ​ — ​ — ​ — ​ 4,508 Substandard - accrual ​ 253 ​ — ​ 1,317 ​ 3,125 ​ 203 ​ — ​ 176 ​ — ​ 5,074 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 179 ​ 179 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 37,929 ​ $ 87,732 ​ $ 87,226 ​ $ 114,154 ​ $ 36,792 ​ $ 62,288 ​ $ 37,795 ​ $ 179 ​ $ 464,095 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 11,591 ​ $ 6,004 ​ $ 462 ​ $ 54 ​ $ 221 ​ $ 25 ​ $ 18,960 ​ $ — ​ $ 37,317 Special mention ​ — ​ — ​ — ​ — ​ — ​ 5 ​ — ​ — ​ 5 Substandard - accrual ​ — ​ — ​ — ​ 23 ​ — ​ — ​ — ​ — ​ 23 Substandard - non-accrual ​ — ​ 33 ​ — ​ — ​ — ​ — ​ — ​ — ​ 33 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 11,591 ​ $ 6,037 ​ $ 462 ​ $ 77 ​ $ 221 ​ $ 30 ​ $ 18,960 ​ $ — ​ $ 37,378 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 966,682 ​ $ 1,292,876 ​ $ 638,243 ​ $ 389,881 ​ $ 191,104 ​ $ 164,112 ​ $ 2,023,942 ​ $ 235,006 ​ $ 5,901,846 Special mention ​ 12,537 ​ 27,475 ​ 25,372 ​ 4,597 ​ 19,461 ​ 6,531 ​ 9,748 ​ 3,751 ​ 109,472 Substandard - accrual ​ 26,226 ​ 1,877 ​ 8,814 ​ 8,647 ​ 1,571 ​ 3,160 ​ 28,828 ​ 18,798 ​ 97,921 Substandard - non-accrual ​ — ​ 746 ​ 6,499 ​ 1,722 ​ — ​ — ​ 6,848 ​ 357 ​ 16,172 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 2,279 ​ — ​ 2,279 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 1,005,445 ​ $ 1,322,974 ​ $ 678,928 ​ $ 404,847 ​ $ 212,136 ​ $ 173,803 ​ $ 2,071,645 ​ $ 257,912 ​ $ 6,127,690 ​ The following tables present the Company’s loan portfolio aging analysis as of March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year and Past Due Status ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 and ​ ​ ​ ​ converted to ​ ​ ​ ​ 2024 2023 2022 2021 2020 Prior Revolving loans term loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 2,558 ​ $ 150 ​ $ 448 ​ $ - ​ $ 274 ​ $ 4,672 ​ $ - ​ $ 8,102 60-89 days ​ - ​ 62 ​ 18 ​ - ​ - ​ - ​ ​ 2,154 ​ - ​ 2,234 Greater than 90 days ​ - ​ 280 ​ - ​ 331 ​ - ​ 144 ​ ​ 8,548 ​ - ​ 9,303 Total past due ​ - ​ 2,900 ​ 168 ​ 779 ​ - ​ 418 ​ 15,374 ​ - ​ 19,639 Current ​ 166,420 ​ 314,919 ​ ​ 256,062 ​ ​ 166,175 ​ ​ 39,598 ​ ​ 47,886 ​ ​ 1,092,617 ​ ​ 76,246 ​ 2,159,923 Total ​ $ 166,420 ​ $ 317,819 ​ $ 256,230 ​ $ 166,954 ​ $ 39,598 ​ $ 48,304 ​ $ 1,107,991 ​ $ 76,246 ​ $ 2,179,562 Greater than 90 days and accruing ​ $ - ​ $ 280 ​ $ - ​ $ 67 ​ $ - ​ $ - ​ $ 447 ​ $ - ​ $ 794 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 198 ​ ​ - ​ 198 Total past due ​ - ​ - ​ - ​ - ​ - ​ - ​ 198 ​ - ​ 198 Current ​ - ​ ​ 4,583 ​ ​ 6,345 ​ ​ - ​ ​ - ​ ​ - ​ ​ 208,147 ​ ​ 1,944 ​ ​ 221,019 Total ​ $ - ​ $ 4,583 ​ $ 6,345 ​ $ - ​ $ - ​ $ - ​ $ 208,345 ​ $ 1,944 ​ $ 221,217 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 2,977 ​ $ 336 ​ $ - ​ $ - ​ $ - ​ $ - ​ $ 1,528 ​ $ 4,841 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 416 ​ ​ 229 ​ ​ - ​ ​ - ​ 645 Total past due ​ - ​ 2,977 ​ 336 ​ - ​ 416 ​ 229 ​ - ​ 1,528 ​ 5,486 Current ​ 15,877 ​ ​ 56,459 ​ ​ 110,740 ​ ​ 126,478 ​ ​ 66,019 ​ ​ 86,192 ​ ​ 76,967 ​ ​ 33,594 ​ ​ 572,326 Total ​ $ 15,877 ​ $ 59,436 ​ $ 111,076 ​ $ 126,478 ​ $ 66,435 ​ $ 86,421 ​ $ 76,967 ​ $ 35,122 ​ $ 577,812 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ 416 ​ $ 229 ​ $ - ​ $ - ​ $ 645 Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 18,853 ​ $ 4,717 ​ $ - ​ $ - ​ $ 141 ​ $ 5,606 ​ $ - ​ $ 29,317 60-89 days ​ - ​ ​ 573 ​ ​ - ​ ​ - ​ ​ 816 ​ ​ 68 ​ ​ - ​ ​ - ​ 1,457 Greater than 90 days ​ - ​ ​ - ​ ​ 522 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ 522 Total past due ​ - ​ 19,426 ​ 5,239 ​ - ​ 816 ​ 209 ​ 5,606 ​ - ​ 31,296 Current ​ 82,853 ​ ​ 434,708 ​ ​ 880,421 ​ ​ 255,603 ​ ​ 162,003 ​ ​ 133,151 ​ ​ 646,252 ​ ​ 143,649 ​ 2,738,640 Total ​ $ 82,853 ​ $ 454,134 ​ $ 885,660 ​ $ 255,603 ​ $ 162,819 ​ $ 133,360 ​ $ 651,858 ​ $ 143,649 ​ $ 2,769,936 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ 6 ​ $ 89 ​ $ 136 ​ $ - ​ $ - ​ $ - ​ $ 231 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ 1,310 ​ ​ - ​ ​ - ​ ​ 176 ​ ​ - ​ 1,486 Total past due ​ - ​ - ​ 6 ​ 1,399 ​ 136 ​ - ​ 176 ​ - ​ 1,717 Current ​ 2,177 ​ ​ 49,465 ​ ​ 91,804 ​ ​ 82,179 ​ ​ 109,462 ​ ​ 95,030 ​ ​ 36,618 ​ ​ 176 ​ 466,911 Total ​ $ 2,177 ​ $ 49,465 ​ $ 91,810 ​ $ 83,578 ​ $ 109,598 ​ $ 95,030 ​ $ 36,794 ​ $ 176 ​ $ 468,628 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ 1,310 ​ $ - ​ $ - ​ $ 176 ​ $ - ​ $ 1,486 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ 4 ​ $ 22 ​ $ - ​ $ - ​ $ 135 ​ $ - ​ $ 161 60-89 days ​ - ​ ​ - ​ ​ 17 ​ ​ 16 ​ ​ - ​ ​ 5 ​ ​ - ​ ​ - ​ 38 Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Total past due ​ - ​ - ​ 21 ​ 38 ​ - ​ 5 ​ 135 ​ - ​ 199 Current ​ 1,289 ​ ​ 10,995 ​ ​ 4,360 ​ ​ 374 ​ ​ 66 ​ ​ 246 ​ ​ 14,503 ​ ​ - ​ 31,833 Total ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 66 ​ $ 251 ​ $ 14,638 ​ $ - ​ $ 32,032 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 24,388 ​ $ 5,213 ​ $ 559 ​ $ 136 ​ $ 415 ​ $ 10,413 ​ $ 1,528 ​ $ 42,652 60-89 days ​ - ​ 635 ​ 35 ​ 16 ​ 816 ​ 73 ​ 2,154 ​ - ​ 3,729 Greater than 90 days ​ - ​ 280 ​ 522 ​ 1,641 ​ 416 ​ 373 ​ 8,922 ​ - ​ 12,154 Total past due ​ - ​ 25,303 ​ 5,770 ​ 2,216 ​ 1,368 ​ 861 ​ 21,489 ​ 1,528 ​ 58,535 Current ​ 268,616 ​ 871,129 ​ 1,349,732 ​ 630,809 ​ 377,148 ​ 362,505 ​ 2,075,104 ​ 255,609 ​ 6,190,652 Total ​ $ 268,616 ​ $ 896,432 ​ $ 1,355,502 ​ $ 633,025 ​ $ 378,516 ​ $ 363,366 ​ $ 2,096,593 ​ $ 257,137 ​ $ 6,249,187 Greater than 90 days and accruing ​ $ - ​ $ 280 ​ $ - ​ $ 1,377 ​ $ 416 ​ $ 229 ​ $ 623 ​ $ - ​ $ 2,925 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year and Past Due Status ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 and ​ ​ ​ ​ converted to ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving loans term loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ 250 ​ $ 178 ​ $ — ​ $ 81 ​ $ — ​ $ 136 ​ $ 158 ​ $ 151 ​ $ 954 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ 30 ​ 28 ​ 347 ​ 24 ​ 199 ​ — ​ 10,800 ​ 2,376 ​ 13,804 Total past due ​ 280 ​ 206 ​ 347 ​ 105 ​ 199 ​ 136 ​ 10,958 ​ 2,527 ​ 14,758 Current ​ 394,177 ​ 260,778 ​ 204,322 ​ 57,732 ​ 40,621 ​ 19,506 ​ 1,097,646 ​ 70,672 ​ 2,145,454 Total ​ $ 394,457 ​ $ 260,984 ​ $ 204,669 ​ $ 57,837 ​ $ 40,820 ​ $ 19,642 ​ $ 1,108,604 ​ $ 73,199 ​ $ 2,160,212 Greater than 90 days and accruing ​ $ 30 ​ $ 28 ​ $ 81 ​ $ — ​ $ 199 ​ $ — ​ $ 2,000 ​ $ 2,199 ​ $ 4,537 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 30 ​ $ — ​ $ 30 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 Total past due ​ — ​ — ​ — ​ — ​ — ​ — ​ 318 ​ — ​ 318 Current ​ 4,581 ​ 6,868 ​ — ​ 156 ​ — ​ — ​ 202,188 ​ 107 ​ 213,900 Total ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,506 ​ $ 107 ​ $ 214,218 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ 371 ​ $ — ​ $ 71 ​ $ — ​ $ — ​ $ 442 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 Total past due ​ — ​ — ​ 204 ​ 371 ​ — ​ 71 ​ — ​ — ​ 646 Current ​ 69,308 ​ 98,946 ​ 128,206 ​ 65,083 ​ 51,555 ​ 37,360 ​ 76,782 ​ 38,367 ​ 565,607 Total ​ $ 69,308 ​ $ 98,946 ​ $ 128,410 ​ $ 65,454 ​ $ 51,555 ​ $ 37,431 ​ $ 76,782 ​ $ 38,367 ​ $ 566,253 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ 307 ​ — ​ — ​ 8,747 Total past due ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ 307 ​ — ​ — ​ 8,747 Current ​ 487,579 ​ 861,694 ​ 252,132 ​ 165,471 ​ 82,748 ​ 54,105 ​ 626,998 ​ 146,060 ​ 2,676,787 Total ​ $ 487,579 ​ $ 862,407 ​ $ 258,161 ​ $ 167,169 ​ $ 82,748 ​ $ 54,412 ​ $ 626,998 ​ $ 146,060 ​ $ 2,685,534 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 307 ​ $ — ​ $ — ​ $ 307 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ 6 ​ $ — ​ $ 137 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 143 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ 1,317 ​ — ​ — ​ — ​ 176 ​ — ​ 1,493 Total past due ​ — ​ 6 ​ 1,317 ​ 137 ​ — ​ — ​ 176 ​ — ​ 1,636 Current ​ 37,929 ​ 87,726 ​ 85,909 ​ 114,017 ​ 36,792 ​ 62,288 ​ 37,619 ​ 179 ​ 462,459 Total ​ $ 37,929 ​ $ 87,732 ​ $ 87,226 ​ $ 114,154 ​ $ 36,792 ​ $ 62,288 ​ $ 37,795 ​ $ 179 ​ $ 464,095 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ 1,317 ​ $ — ​ $ — ​ $ — ​ $ 176 ​ $ — ​ $ 1,493 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ 219 ​ $ 40 ​ $ — ​ $ — ​ $ — ​ $ 200 ​ $ — ​ $ 459 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ 35 ​ — ​ — ​ — ​ — ​ — ​ — ​ 35 Total past due ​ — ​ 254 ​ 40 ​ — ​ — ​ — ​ 200 ​ — ​ 494 Current ​ 11,591 ​ 5,783 ​ 422 ​ 77 ​ 221 ​ 30 ​ 18,760 ​ — ​ 36,884 Total ​ $ 11,591 ​ $ 6,037 ​ $ 462 ​ $ 77 ​ $ 221 ​ $ 30 ​ $ 18,960 ​ $ — ​ $ 37,378 Greater than 90 days and accruing ​ $ — ​ $ 2 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 2 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ 250 ​ $ 403 ​ $ 40 ​ $ 589 ​ $ — ​ $ 207 ​ $ 388 ​ $ 151 ​ $ 2,028 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ 30 ​ 776 ​ 7,897 ​ 1,722 ​ 199 ​ 307 ​ 11,264 ​ 2,376 ​ 24,571 Total past due ​ 280 ​ 1,179 ​ 7,937 ​ 2,311 ​ 199 ​ 514 ​ 11,652 ​ 2,527 ​ 26,599 Current ​ 1,005,165 ​ 1,321,795 ​ 670,991 ​ 402,536 ​ 211,937 ​ 173,289 ​ 2,059,993 ​ 255,385 ​ 6,101,091 Total ​ $ 1,005,445 ​ $ 1,322,974 ​ $ 678,928 ​ $ 404,847 ​ $ 212,136 ​ $ 173,803 ​ $ 2,071,645 ​ $ 257,912 ​ $ 6,127,690 Greater than 90 days and accruing ​ $ 30 ​ $ 30 ​ $ 1,398 ​ $ — ​ $ 199 ​ $ 307 ​ $ 2,176 ​ $ 2,199 ​ $ 6,339 ​ Non-accrual loans are loans for which the Company does not record interest income. The accrual of interest on loans is discontinued at the time the loan is 90 days past due unless the credit is well secured and in process of collection. Past due status is based on contractual terms of the loan. In all cases, loans are placed on non-accrual or charged off at an earlier date, if collection of principal or interest is considered doubtful. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. The following table presents the Company’s non-accrual loans by loan segments at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ ​ Non-accrual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ loans ​ ​ ​ ​ Loans with ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 and ​ Revolving ​ converted ​ Total Non- ​ no related ​ 2024 2023 2022 2021 2020 Prior loans to term loans accrual Loans Allowance ​ ​ (Dollars in thousands) Commercial and industrial ​ $ — ​ $ 2,213 ​ $ — ​ $ 264 ​ $ — ​ $ 144 ​ $ 8,100 ​ $ 129 ​ $ 10,850 ​ $ 5,717 Energy ​ — ​ — ​ — ​ — ​ — ​ — ​ 198 ​ — ​ 198 ​ 198 Commercial real estate - owner-occupied ​ — ​ — ​ 336 ​ — ​ — ​ — ​ — ​ — ​ 336 ​ 336 Commercial real estate - non-owner-occupied ​ — ​ — ​ 522 ​ — ​ — ​ — ​ — ​ — ​ 522 ​ — Residential real estate ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 176 ​ 176 ​ 176 Consumer ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ — ​ $ 2,213 ​ $ 858 ​ $ 264 ​ $ — ​ $ 144 ​ $ 8,298 ​ $ 305 ​ $ 12,082 ​ $ 6,427 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ ​ Non-accrual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ loans ​ ​ ​ ​ Loans with ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 and ​ Revolving ​ converted ​ Total Non- ​ no related ​ 2023 2022 2021 2020 2019 Prior loans to term loans accrual Loans Allowance ​ ​ (Dollars in thousands) Commercial and industrial ​ $ — ​ $ — ​ $ 266 ​ $ 24 ​ $ — ​ $ — ​ $ 8,839 ​ $ 178 ​ $ 9,307 ​ $ 6,198 Energy ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 ​ 288 Commercial real estate - owner-occupied ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 ​ 204 Commercial real estate - non-owner-occupied ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ — ​ — ​ — ​ 8,440 ​ 1,698 Residential real estate ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 179 ​ 179 ​ 179 Consumer ​ — ​ 33 ​ — ​ — ​ — ​ — ​ — ​ — ​ 33 ​ 33 Total ​ $ — ​ $ 746 ​ $ 6,499 ​ $ 1,722 ​ $ — ​ $ — ​ $ 9,127 ​ $ 357 ​ $ 18,451 ​ $ 8,600 ​ Interest income recognized on non-accrual loans was zero during the three months ended March 31, 2024 and 2023. ​ Allowance for Credit Losses The Company’s CECL committee meets at least quarterly to oversee the ACL methodology. The committee estimates the ACL using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. The ACL represents the Company’s current estimate of lifetime credit losses inherent in the loan portfolio at the statement of financial condition date. The ACL is adjusted for expected prepayments when appropriate and excludes expected extensions, renewals, and modifications. The ACL is the sum of three components: (i) asset specific / individual loan reserves; (ii) quantitative (formulaic or pooled) reserves; and (iii) qualitative (judgmental) reserves. Asset Specific - Quantitative Qualitative ● The nature and volume of changes in risk ratings; ● The volume and severity of past due loans; ● The volume of non-accrual loans; ● The nature and volume of the loan portfolio, including the existence, growth, and effect of any concentrations of credit; ● Changes in the Institute of Supply Management’s Purchasing Manager Indices (“PMI”) for services and manufacturing; ● Changes in collateral values; ● Changes in lending policies, procedures, and quality of loan reviews; ● Changes in lending staff; and ● Changes in competition, legal and regulatory environments In addition to the current condition qualitative adjustments, the Company uses the Federal Reserve’s unemployment forecast to adjust the ACL based on forward-looking guidance. The Federal Reserve’s unemployment forecast extends three years and is eventually reverted to the mean of six percent by year 10. ​ The following table presents the activity in the allowance for credit losses and allowance for credit losses on off-balance sheet credit exposures by loan segment for the three months ended March 31, 2024: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real Estate ​ Real Estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ Owner- ​ Non-owner- ​ Residential ​ ​ ​ ​ ​ ​ ​ and Industrial Energy Occupied Occupied Real Estate Consumer Total ​ ​ (Dollars in thousands) Allowance for Credit Losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 32,244 ​ $ 3,143 ​ $ 6,445 ​ $ 28,130 ​ $ 3,456 ​ $ 44 ​ $ 73,462 Charge-offs ​ (786) ​ — ​ — ​ (848) ​ — ​ — ​ (1,634) Recoveries ​ 55 ​ 118 ​ — ​ — ​ — ​ — ​ 173 Provision (release) ​ 2,308 ​ (92) ​ (60) ​ 707 ​ 10 ​ (18) ​ 2,855 Ending balance ​ $ 33,821 ​ $ 3,169 ​ $ 6,385 ​ $ 27,989 ​ $ 3,466 ​ $ 26 ​ $ 74,856 Allowance for Credit Losses on Off-Balance Sheet Credit Exposures: ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 954 ​ $ 149 ​ $ 125 ​ $ 5,096 ​ $ 89 ​ $ — ​ $ 6,413 Provision (release) ​ 54 ​ (149) ​ (36) ​ (1,076) ​ 6 ​ 1 ​ (1,200) Ending balance ​ $ 1,008 ​ $ — ​ $ 89 ​ $ 4,020 ​ $ 95 ​ $ 1 ​ $ 5,213 ​ The ACL balance increased $1.4 million during the quarter ended March 31, 2024 and included provision of $2.9 million due to loan growth and an increase in specific reserves. Net charge-offs were million, primarily due to charge-offs on two commercial and industrial loans, two commercial real estate – non-owner-occupied loans and one credit card account. One of the charge-offs on commercial real estate – non-owner-occupied loans was a partial charge-off of a commercial construction non-acc

Leases

Leases	3 Months Ended
	Mar. 31, 2024
Leases
Leases	Note 4: Leases The Company’s leases primarily include bank branches located in Kansas City, Missouri; Tulsa, Oklahoma; Dallas, Texas; Frisco, Texas; Fort Worth, Texas; Phoenix, Arizona; Denver, Colorado; and Colorado Springs, Colorado. The remaining lease terms on these branch leases range from less than two years to 18 years with certain options to renew. Renewal terms can extend the lease term between five years and 20 years. The exercise of lease renewal options is at the Company’s sole discretion. When it is reasonably certain that the Company will exercise its option to renew or extend the lease term, that option is included in the estimated value of the right of use (“ROU”) asset and lease liability. The Company’s lease agreements do not contain any material residual value guarantees or material restrictive covenants. As of March 31, 2024, the Company recognized one finance lease and the remaining Company leases were classified as operating leases. The ROU asset is included in “Other assets” on the consolidated statements of financial condition, and was $29 million and $30 million at March 31, 2024 and December 31, 2023, respectively. Certain adjustments to the ROU asset may be required for items such as initial direct costs paid or incentives received. The lease liability is located in “Interest payable and other liabilities” on the consolidated statements of financial condition and was $33 million and $34 million at March 31, 2024 and December 31, 2023, respectively. As of March 31, 2024, the remaining weighted-average lease term was 10.5 years, and the weighted-average discount rate was 2.77% utilizing the Company’s incremental Federal Home Loan Bank (“FHLB”) borrowing rate for borrowings of a similar term at the date of lease commencement. The following table presents components of operating lease expense in the accompanying consolidated statements of operations for the three-month periods ended March 31, 2024 and 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ ​ 2024 ​ 2023 ​ ​ ​ (Dollars in thousands) ​ Finance lease amortization of right-of-use asset ​ $ 73 ​ $ 70 ​ Finance lease interest on lease liability ​ 66 ​ 69 ​ Operating lease expense ​ 862 ​ 732 ​ Variable lease expense ​ 339 ​ 393 ​ Short-term lease expense ​ 6 ​ 5 ​ Total lease expense ​ $ 1,346 ​ $ 1,269 ​ ​ Future minimum commitments under operating finance ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Finance Leases ​ ​ (Dollars in thousands) 2024 $ 2,815 $ 367 2025 ​ 3,806 ​ 490 2026 ​ 3,852 ​ 490 2027 ​ 3,847 ​ 528 2028 ​ 3,427 ​ 540 Thereafter ​ 10,750 ​ 7,705 Total lease payments ​ 28,497 ​ 10,120 Less: imputed interest ​ 2,775 ​ 2,776 Total ​ $ 25,722 ​ $ 7,344 ​ Supplemental cash flow information ​ Operating cash flows paid for operating leases included in the measurement of lease liabilities were $1.0 million and $0.9 million, respectively, for the three months ended March 31, 2024 and 2023. Operating cash flows paid for finance lease amounts included in the measurement of lease liabilities were million for the three months ended March 31, 2024 and 2023. During the three months ended March 31, 2024, the Company did

Goodwill and Core Deposit Intan

Goodwill and Core Deposit Intangible	3 Months Ended
	Mar. 31, 2024
Goodwill and Core Deposit Intangible
Goodwill and Core Deposit Intangible	Note 5: Goodwill and Core Deposit Intangible Goodwill is measured as the excess of the fair value of consideration paid over the fair value of net assets acquired. In accordance with GAAP, the Company performs annual tests to identify impairment of goodwill and more frequently if events or circumstances indicate a potential impairment may exist. No goodwill impairment was recorded during the three months ended March 31, 2024. The Company is amortizing the core deposit intangible (“CDI”) over its estimated useful life of approximately 10 years from the date of each respective acquisition using the sum of the years’ digits accelerated method. The gross carrying amount of goodwill and the gross carrying amount and accumulated amortization of the CDI at March 31, 2024 and December 31, 2023 were: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Carrying ​ Accumulated ​ Net Carrying ​ ​ Amount ​ Amortization ​ Amount ​ ​ (Dollars in thousands) March 31, 2024 ​ ​ ​ Goodwill ​ $ 14,135 ​ $ — ​ $ 14,135 Core deposit intangible ​ 21,938 ​ 5,669 ​ 16,269 Total goodwill and intangible assets ​ $ 36,073 ​ $ 5,669 ​ $ 30,404 December 31, 2023 ​ ​ ​ Goodwill ​ $ 14,135 ​ $ — ​ $ 14,135 Core deposit intangible ​ ​ 21,938 ​ 4,738 ​ 17,200 Total goodwill and intangible assets ​ $ 36,073 ​ $ 4,738 ​ $ 31,335 ​ The estimated aggregate future amortization expense over the next five years for the CDI is as follows at March 31, 2024: ​ ​ ​ ​ ​ (Dollars in thousands) ​ ​ For the nine months ending December 31, 2024 ​ $ 2,638 For the year ending December 31, 2025 ​ 3,155 For the year ending December 31, 2026 ​ 2,739 For the year ending December 31, 2027 ​ 2,325 For the year ending December 31, 2028 ​ 1,909 ​

Derivatives and Hedging

Derivatives and Hedging	3 Months Ended
	Mar. 31, 2024
Derivatives and Hedging
Derivatives and Hedging	Note 6: Derivatives and Hedging The Company is exposed to certain risks arising from both its business operations and economic conditions, including interest rate, liquidity, and credit risk. The Company uses derivative financial instruments as part of its risk management activities to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. Cash Flow Hedges of Interest Rate Risk The Company uses interest rate derivatives to add stability to interest income and expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company may utilize interest rate swaps, including forwards, interest rate caps, floors, collars, corridors and swaptions as part of its interest rate risk management strategy. During the first quarter of 2024, the Company utilized interest rate swaps and a collar to hedge the variable cash flows associated with existing variable-rate debt and loan assets. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Interest rate collars designated as cash flow hedges involve payments of variable-rate amounts if interest rates rise above the cap strike rate on the contract and the receipt of variable-rate amounts if interest rates fall below the floor strike rate on the contract. During the first quarter of 2024, For derivatives that qualify as cash flow hedges of interest rate risk and are designated as such, the gain or loss on the derivative is recorded in Accumulated Other Comprehensive Loss (“AOCI”) and subsequently reclassified into interest income or expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in AOCI related to derivatives will be reclassified to interest income and expense as interest payments are received and made on the Company’s variable-rate assets and debt. The Company currently estimates that $3.3 million will be reclassified as a net decrease to net interest income during the next twelve months. These reclassifications are for active hedges, as well as amounts related to five hedged swaps that were terminated in 2022 and the two hedged swaps terminated in the first quarter of 2024, that continue to be recognized based on the original effective dates of the hedged swaps. The Company is hedging its exposure to the variability in future cash flows for forecasted transactions over a maximum period of 2.8 years. Non-designated Hedges Derivatives not designated as hedges are not speculative and result from a service provided to clients. The Company executes interest rate swaps with clients to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives that the Company executes with a third-party, such that the Company minimizes its net risk exposure resulting from such transactions. Interest rate derivatives associated with this program do not meet the strict hedge accounting requirements and changes in the fair value of both the client derivatives and the offsetting derivatives are recognized directly in earnings. Swap fees earned upon origination and credit valuation adjustments that represent the risk of a counterparty’s default are reported on the consolidated statements of operations as swap fee income, net. The effect of the Company’s derivative financial instruments gain (loss) is reported on the consolidated statements of cash flows within “other assets” and “other liabilities”. The Company had 46 swaps outstanding with an aggregate notional amount of $323 million and $307 million at March 31, 2024 and December 31, 2023, respectively. The table below presents the fair value of the Company’s derivative financial instruments and their classification on the consolidated statements of financial condition as of March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Asset Derivatives ​ Liability Derivatives ​ ​ Statement of ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ ​ ​ ​ ​ ​ ​ Financial ​ ​ ​ Financial ​ ​ ​ ​ Condition ​ March 31, ​ December 31, ​ Condition ​ March 31, ​ December 31, ​ ​ Location ​ 2024 ​ 2023 ​ Location ​ 2024 ​ 2023 ​ ​ (Dollars in thousands) Interest rate products: ​ ​ ​ ​ Derivatives designated as hedging instruments Other assets and Interest receivable ​ $ — ​ $ 101 Interest payable and other liabilities ​ $ 8,083 ​ $ 5,992 Derivatives not designated as hedging instruments Other assets and Interest receivable ​ ​ 9,366 ​ ​ 7,830 Interest payable and other liabilities ​ ​ 9,366 ​ ​ 7,837 Total ​ $ 9,366 ​ $ 7,931 ​ $ 17,449 ​ $ 13,829 ​ The tables below present the effect of cash flow hedge accounting on AOCI for the three months ended March 31, 2024 and 2023. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ Location of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Gain or ​ Gain or (Loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) ​ (Loss) ​ Recognized ​ ​ ​ ​ ​ ​ ​ Gain or ​ Reclassified ​ Reclassified ​ from ​ ​ ​ ​ Gain or ​ Gain or ​ (Loss) ​ from ​ from ​ Accumulated ​ Gain or ​ (Loss) ​ (Loss) ​ Reclassified ​ Accumulated ​ Accumulated ​ Other ​ (Loss) ​ Recognized ​ Recognized ​ from ​ OCI into ​ OCI into ​ Comprehensive ​ Recognized ​ in OCI ​ in OCI ​ Accumulated ​ Earnings ​ Earnings ​ Income into ​ in OCI on ​ Included ​ Excluded ​ OCI into ​ Included ​ Excluded ​ Earnings ​ Derivative Component Component Earnings Component Component ​ ​ ​ ​ (Dollars in thousands) Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ Interest Rate Products ​ Interest Income ​ $ (3,215) ​ $ (3,215) ​ $ — $ (1,124) ​ $ (1,124) ​ $ — Interest Rate Products ​ Interest Expense ​ 10 ​ 10 ​ — 196 ​ 196 ​ — Total ​ ​ $ (3,205) ​ $ (3,205) ​ $ — $ (928) ​ $ (928) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Location of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Gain or ​ Gain or (Loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) ​ (Loss) ​ Recognized ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Reclassified ​ Reclassified ​ from ​ ​ ​ Gain or ​ Gain or ​ (Loss) ​ from ​ from ​ Accumulated ​ Gain or ​ (Loss) ​ (Loss) ​ Reclassified ​ Accumulated ​ Accumulated ​ Other ​ (Loss) ​ Recognized ​ Recognized ​ from ​ OCI into ​ OCI into ​ Comprehensive ​ Recognized ​ in OCI ​ in OCI ​ Accumulated ​ Earnings ​ Earnings ​ Income into ​ in OCI on ​ Included ​ Excluded ​ OCI into ​ Included ​ Excluded ​ Earnings ​ Derivative Component Component Earnings Component Component ​ ​ ​ ​ (Dollars in thousands) Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest Rate Products ​ Interest Expense ​ $ 1,540 ​ $ 1,540 ​ $ — $ — ​ $ — ​ $ — Total ​ ​ $ 1,540 ​ $ 1,540 ​ $ — $ — ​ $ — ​ $ — ​ As of March 31, 2024 and December 31, 2023, the Company had minimum collateral thresholds with certain of its derivative counterparties and had pledged collateral of $1.1 million and $1.0 million, respectively, and received collateral of $0.6 million and $1.5 million, respectively.

Time Deposits and Borrowings

Time Deposits and Borrowings	3 Months Ended
	Mar. 31, 2024
Time Deposits and Borrowings
Time Deposits and Borrowings	Note 7: Time Deposits and Borrowings The scheduled maturities, excluding interest, of the Company’s borrowings at March 31, 2024 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Within One ​ One to Two ​ Two to Three ​ Three to ​ Four to Five ​ After Five ​ ​ ​ ​ Year Years Years Four Years Years Years Total ​ ​ (Dollars in thousands) Time deposits ​ $ 1,662,674 ​ $ 170,867 ​ $ 1,305 ​ $ 1,500 ​ $ 790 ​ $ — ​ $ 1,837,136 FHLB borrowings ​ 1,549 ​ 11,291 ​ — ​ 50,000 ​ 15,000 ​ — ​ 77,840 SBA secured borrowing ​ — ​ — ​ — ​ — ​ — ​ 7,778 ​ 7,778 Trust preferred securities (1) ​ — ​ — ​ — ​ — ​ — ​ 1,133 ​ 1,133 Total ​ $ 1,664,223 ​ $ 182,158 ​ $ 1,305 ​ $ 51,500 ​ $ 15,790 ​ $ 8,911 ​ $ 1,923,887 (1) The contract value of the trust preferred securities is $2.6 million and is currently being accreted to the maturity date of 2035.

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2024
Changes in Accumulated Other Comprehensive Loss
Changes in Accumulated Other Comprehensive Loss	Note 8: Change in Accumulated Other Comprehensive Loss Amounts reclassified from AOCI and the affected line items in the consolidated statements of operations were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ Affected Line Item in the ​ 2024 2023 Statements of Operations ​ ​ (Dollars in thousands) ​ ​ Realized gain on available-for-sale securities ​ $ 2 ​ $ 63 ​ Other non-interest income Less: tax expense effect ​ — ​ 15 ​ Income tax expense Realized gain on available-for-sale securities, net of income tax ​ ​ 2 ​ ​ 48 ​ ​ Loss on cash flow hedges ​ ​ (1,124) ​ ​ — ​ Interest income - Loans Gain on cash flow hedges ​ ​ 196 ​ ​ — ​ Interest expense - Deposits Less: tax benefit effect ​ ​ (214) ​ ​ — ​ Income tax expense Net loss on cash flow hedges, net of tax ​ ​ (714) ​ ​ — ​ ​ Total reclassified amount ​ $ (712) ​ $ 48 ​ ​

Regulatory Matters

Regulatory Matters	3 Months Ended
	Mar. 31, 2024
Regulatory Matters
Regulatory Matters	Note 9: Regulatory Matters The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Management believes that, as of March 31, 2024, the Company and the Bank met all capital adequacy requirements to which they are subject. The capital rules require the Company to maintain a 2.5% capital conservation buffer with respect to Common Equity Tier I capital, Tier I capital to risk-weighted assets, and total capital to risk-weighted assets, which is included in the column “Required to be Considered Adequately Capitalized” within the table below. A financial institution with a conservation buffer of less than the required amount is subject to limitations on capital distributions, including dividend payments and stock repurchases, as well as certain discretionary bonus payments to executive officers. The Company and the Bank opted to exclude AOCI from the regulatory capital calculations. As a result, changes in AOCI, net of tax, do not impact the Company’s or Bank’s regulatory capital ratios. ​ The Company’s and the Bank’s actual capital amounts and ratios as of March 31, 2024 and December 31, 2023 are presented in the following table: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Required to be Considered Required to be Considered ​ ​ Actual ​ Well Capitalized ​ Adequately Capitalized (1) ​ Amount Ratio Amount Ratio Amount Ratio ​ ​ (Dollars in thousands) March 31, 2024 ​ ​ ​ ​ Total Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ $ 825,110 11.4 % ​ N/A N/A ​ $ 761,189 10.5 % Bank ​ 806,893 11.1 ​ $ 724,451 10.0 % 760,673 10.5 ​ Tier 1 Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 745,321 10.3 ​ N/A N/A ​ 616,201 8.5 ​ Bank ​ 727,104 10.0 ​ 579,561 8.0 ​ 615,783 8.5 ​ Common Equity Tier 1 to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 736,438 10.2 ​ N/A N/A ​ 507,460 7.0 ​ Bank ​ 727,104 10.0 ​ 470,893 6.5 ​ 507,116 7.0 ​ Tier 1 Capital to Average Assets ​ ​ ​ ​ Consolidated ​ 745,321 10.1 ​ N/A N/A ​ 295,231 4.0 ​ Bank ​ $ 727,104 9.9 % $ 369,073 5.0 % $ 295,258 4.0 % December 31, 2023 ​ ​ ​ ​ Total Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ $ 807,018 11.2 % ​ N/A N/A ​ $ 756,285 10.5 % Bank ​ 800,522 11.1 ​ $ 719,705 10.0 % 755,691 10.5 ​ Tier 1 Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 727,723 10.1 ​ N/A N/A ​ 612,231 8.5 ​ Bank ​ 721,227 10.0 ​ 575,764 8.0 ​ 611,750 8.5 ​ Common Equity Tier 1 to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 718,855 10.0 ​ N/A N/A ​ 504,190 7.0 ​ Bank ​ 721,227 10.0 ​ 467,809 6.5 ​ 503,794 7.0 ​ Tier 1 Capital to Average Assets ​ ​ ​ ​ Consolidated ​ 727,723 10.0 ​ N/A N/A ​ 292,517 4.0 ​ Bank ​ $ 721,227 9.9 % $ 365,675 5.0 % $ 292,540 4.0 % (1) Represents the minimum capital required for capital adequacy under Basel III. Includes capital conservation buffer of 2.5% .

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity
Stockholders' Equity	Note 10: Stockholders’ Equity The following table presents the computation of basic and diluted earnings per common share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ 2024 2023 ​ ​ ​ (Dollars in thousands, except per share data) ​ Earnings per Common Share ​ ​ ​ ​ Net Income ​ $ 18,223 ​ $ 16,108 ​ Less: preferred stock dividends ​ ​ 155 ​ ​ — ​ Net income available to common stockholders ​ ​ 18,068 ​ ​ 16,108 ​ Weighted average common shares ​ 49,510,808 ​ 48,635,910 ​ Earnings per common share ​ $ 0.36 ​ $ 0.33 ​ Diluted Earnings per Common Share ​ ​ ​ Net Income ​ $ 18,223 ​ $ 16,108 ​ Less: preferred stock dividends ​ ​ 155 ​ ​ — ​ Net income available to common stockholders ​ ​ 18,068 ​ ​ 16,108 ​ Weighted average common shares ​ 49,510,808 ​ 48,635,910 ​ Effect of dilutive shares ​ 456,830 ​ 407,711 ​ Weighted average dilutive common shares ​ 49,967,638 ​ 49,043,621 ​ Diluted earnings per common share ​ $ 0.36 ​ $ 0.33 ​ Stock-based awards not included because to do so would be antidilutive ​ 281,666 ​ 916,080 ​ ​ Dividends of $155 thousand related to the Series A Preferred Stock were declared and paid during the three months ended March 31, 2024. On May 2, 2024, the Board of Directors declared a quarterly dividend on Series A Preferred Stock in the amount of

Disclosure about Fair Value of

Disclosure about Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2024
Disclosure about Fair Value of Financial Instruments
Disclosure about Fair Value of Financial Instruments	Note 11: Disclosures about Fair Value of Financial Instruments Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair value measurements must maximize the use of observable inputs and minimize the use of unobservable inputs. There is a hierarchy of three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs supported by little or no market activity and significant to the fair value of the assets or liabilities. Recurring Measurements The following list presents the assets and liabilities recognized in the accompanying consolidated statements of financial condition measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Description Valuation Hierarchy Level Where Fair Value Balance Can Be Found Available-for-Sale Securities Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independently sourced market parameters, including, but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. ​ Level 2 ​ Note 2: Securities Derivatives Fair value of the interest rate swaps is obtained from independent pricing services based on quoted market prices for similar derivative contracts. ​ Level 2 ​ Note 6: Derivatives and ​ Nonrecurring Measurements The following tables present the fair value measurement on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ ​ ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ Fair Value (Level 1) (Level 2) (Level 3) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans ​ $ 2,288 ​ $ — ​ $ — ​ $ 2,288 Foreclosed assets held-for-sale ​ ​ 5,374 ​ ​ — ​ ​ — ​ ​ 5,374 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ ​ ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ Fair Value (Level 1) (Level 2) (Level 3) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans $ 10,570 ​ $ — ​ $ — ​ $ 10,570 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Following is a description of the valuation methodologies and inputs used for assets measured at fair value on a nonrecurring basis and recognized in the accompanying consolidated statements of financial condition, as well as the general classification of such assets pursuant to the valuation hierarchy. For assets classified within Level 3 of the fair value hierarchy, the process used to develop the reported fair value is described below. Collateral-Dependent Impaired Loans, Net of ACL - the fair value hierarchy. The Company considers the appraisal or evaluation as the starting point for determining fair value and then considers other factors and events in the environment that may affect the fair value. Appraisals of the collateral underlying collateral dependent loans are obtained when the loan is determined to be collateral dependent and subsequently as deemed necessary by the Office of the Chief Credit Officer. Foreclosed Assets Held-for-Sale - Unobservable (Level 3) Inputs The following tables present quantitative information about unobservable inputs used in nonrecurring Level 3 fair value measurements at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ ​ ​ Unobservable ​ Range ​ Fair Value Valuation Techniques Inputs (Weighted Average) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans ​ $ 2,288 Appraisal of collateral Appraisal adjustments (1) 0% - 25% Foreclosed assets held-for-sale ​ $ 5,374 Appraisal of held property Appraisal adjustments (1) 10% - 10% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ ​ ​ Unobservable ​ Range ​ Fair Value Valuation Techniques Inputs (Weighted Average) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans $ 10,570 Appraisal of collateral Appraisal adjustments (1) 0% - 56% (1) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. ​ The following tables present the estimated fair values of the Company’s financial instruments at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Carrying ​ Fair Value Measurements ​ Amount Level 1 Level 2 Level 3 ​ ​ (Dollars in thousands) Financial Assets ​ ​ ​ ​ Cash and cash equivalents ​ $ 206,773 ​ $ 206,773 ​ $ — ​ $ — Available-for-sale securities ​ 786,603 ​ — ​ 786,603 ​ — Loans, net of allowance for credit losses ​ 6,174,331 ​ — ​ — ​ 6,139,784 Restricted equity securities ​ 3,752 ​ — ​ — ​ 3,752 Interest receivable ​ 37,833 ​ — ​ 37,833 ​ — Equity securities ​ 6,917 ​ — ​ — ​ 6,917 Derivative assets ​ 9,054 ​ — ​ 9,054 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ Deposits ​ $ 6,587,146 ​ $ 954,240 ​ $ — ​ $ 5,663,040 Federal Home Loan Bank advances ​ 77,840 ​ — ​ 71,735 ​ — Other borrowings ​ 8,911 ​ — ​ 9,885 ​ — Interest payable ​ 19,921 ​ — ​ 19,921 ​ — Derivative liabilities ​ 17,138 ​ — ​ 17,138 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ Carrying ​ Fair Value Measurements ​ Amount Level 1 Level 2 Level 3 ​ ​ (Dollars in thousands) Financial Assets ​ ​ ​ ​ Cash and cash equivalents ​ $ 255,229 ​ $ 255,229 ​ $ — ​ $ — Available-for-sale securities ​ 766,653 ​ — ​ 766,653 ​ — Loans, net of allowance for credit losses ​ 6,054,228 ​ — ​ — ​ 6,036,887 Restricted equity securities ​ 3,950 ​ — ​ — ​ 3,950 Interest receivable ​ 37,294 ​ — ​ 37,294 ​ — Equity securities ​ 5,794 ​ — ​ — ​ 5,794 Derivative assets ​ 7,581 ​ — ​ 7,581 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ Deposits ​ $ 6,491,276 ​ $ 990,458 ​ $ — ​ $ 5,547,203 Federal Home Loan Bank advances ​ 77,889 ​ — ​ 72,123 ​ — Other borrowings ​ 8,950 ​ — ​ 9,891 ​ — Interest payable ​ 18,529 ​ — ​ 18,529 ​ — Derivative liabilities ​ 13,594 ​ — ​ 13,594 ​ — ​

Commitments and Credit Risk

Commitments and Credit Risk	3 Months Ended
	Mar. 31, 2024
Commitments and Credit Risk
Commitments and Credit Risk	​ Note 12: Commitments and Credit Risk The Company had the following commitments at March 31, 2024 and December 31, 2023: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 December 31, 2023 ​ ​ (Dollars in thousands) Commitments to originate loans ​ $ 97,741 ​ $ 59,728 Standby letters of credit ​ 75,672 ​ 74,139 Lines of credit ​ 1,897,172 ​ 2,008,356 Commitment related to investment fund ​ 3,026 ​ 4,206 Total ​ $ 2,073,611 ​ $ 2,146,429 ​

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2024
Nature of Operations and Summary of Significant Accounting Policies
Basis of Presentation	Basis of Presentation The accompanying interim unaudited consolidated financial statements serve to update the CrossFirst Bankshares, Inc. Annual Report on Form 10-K for the year ended December 31, 2023 and include the consolidated accounts of Bankshares, the Bank, CFI, CFBSA I, LLC and CFBSA II, LLC (together, referred to herein as the “Company”). The accompanying unaudited consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) and where applicable, with general practices in the banking industry or guidelines prescribed by bank regulatory agencies. However, they may not include all information and notes necessary to constitute a complete set of financial statements under GAAP applicable to annual periods and accordingly should be read in conjunction with the financial information contained in the Company's most recent Annual Report on Form 10-K. The unaudited consolidated financial statements reflect all adjustments which are, in the opinion of management, necessary for a fair statement of the results presented. All such adjustments are of a normal recurring nature. All significant intercompany balances and transactions have been eliminated in consolidation. Certain reclassifications of prior years' amounts are made whenever necessary to conform to current period presentation. The results of operations for the interim period are not necessarily indicative of the results that may be expected for the full year or any other interim period. All amounts are in thousands, except share data, or as otherwise noted. GAAP requires management to make estimates that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosures of contingent assets and liabilities. By their nature, estimates are based on judgment and available information. Management has made significant estimates in certain areas, such as the fair values of financial instruments, and the allowance for credit losses (“ACL”). Because of the inherent uncertainties associated with any estimation process and future changes in market and economic conditions, it is possible that actual results could differ significantly from those estimates. The Company's significant accounting policies followed in the preparation of the unaudited consolidated financial statements are disclosed in Note 1 of the audited financial statements and notes for the year ended December 31, 2023 and are contained in the Company's Annual Report on Form 10-K for that period. There have been no significant changes to the application of significant accounting policies since December 31, 2023.
Related Party Transactions	Related Party Transactions The Bank extends credit and receives deposits from related parties. In management’s opinion, the loans and deposits were made in the ordinary course of business and made on similar terms as those prevailing at the time with other persons. Related party loans totaled $10 million and $12 million, while related party deposits totaled $105 million and $106 million, at March 31, 2024 and December 31, 2023, respectively. Related parties also owned Company’s Series A Non-Cumulative Perpetual Preferred Stock, par value $0.01 per share (“Series A Preferred Stock”), at March 31, 2024.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Accounting pronouncements not yet adopted by the Company In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires enhanced disclosures on both an annual and interim basis about significant segment expenses, including for companies with only one reportable segment. This ASU is effective on a retrospective basis for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the impact the adoption of this ASU will have on its consolidated financial statements and related disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures which requires updates to rate reconciliation disclosures and information on income taxes paid on an annual basis. This ASU is effective on a prospective basis with retrospective application permitted for annual periods beginning after December 15, 2024. The Company is evaluating the impact the adoption of this ASU will have on its consolidated financial statements and related disclosures. ​

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2024
Securities
Schedule of Available-for-sale Securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ Approximate ​ Amortized Cost Gains Losses Fair Value ​ ​ (Dollars in thousands) Federal agency obligations ​ $ 9,989 ​ $ 42 ​ $ — ​ $ 10,031 Mortgage-backed - GSE residential ​ ​ 251,994 ​ ​ 280 ​ ​ 23,614 ​ ​ 228,660 Collateralized mortgage obligations - GSE residential ​ 71,105 ​ 301 ​ 1,138 ​ 70,268 State and political subdivisions ​ 394,166 ​ 297 ​ 46,680 ​ 347,783 Small Business Administration loan pools ​ ​ 123,224 ​ ​ 325 ​ ​ 2,256 ​ ​ 121,293 Corporate bonds ​ 9,731 ​ — ​ 1,163 ​ 8,568 Total available-for-sale securities ​ $ 860,209 ​ $ 1,245 ​ $ 74,851 ​ $ 786,603 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ ​ ​ Unrealized ​ Unrealized ​ Approximate ​ Amortized Cost Gains Losses Fair Value ​ ​ (Dollars in thousands) Federal agency obligations $ 9,988 ​ $ 84 ​ $ — ​ $ 10,072 U.S. Treasury securities ​ ​ 4,965 ​ ​ 3 ​ ​ — ​ ​ 4,968 Mortgage-backed - GSE residential ​ 233,203 ​ ​ 629 ​ ​ 21,370 ​ ​ 212,462 Collateralized mortgage obligations - GSE residential ​ 50,125 ​ ​ 493 ​ ​ 674 ​ ​ 49,944 State and political subdivisions ​ 396,349 ​ ​ 497 ​ ​ 40,949 ​ ​ 355,897 Small Business Administration loan pools ​ ​ 125,017 ​ ​ 722 ​ ​ 961 ​ ​ 124,778 Corporate bonds ​ 9,740 ​ ​ — ​ ​ 1,208 ​ ​ 8,532 Total available-for-sale securities $ 829,387 ​ $ 2,428 ​ $ 65,162 ​ $ 766,653
Schedule of Gross Realized Gains and Losses from Sales or Maturities of AFS Securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, 2024 ​ ​ ​ Gross Realized Gains Gross Realized Losses Net Realized Gain ​ ​ ​ (Dollars in thousands) ​ Available-for-sale securities ​ $ 2 ​ $ — ​ $ 2 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, 2023 ​ ​ ​ Gross Realized Gains Gross Realized Losses Net Realized Gain ​ ​ ​ (Dollars in thousands) ​ Available-for-sale securities ​ $ 193 ​ $ (130) ​ $ 63 ​
Schedule of Available-for-sale Securities Continuous Unrealized Loss Position	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Value Losses Securities Value Losses Securities Value Losses Securities ​ ​ (Dollars in thousands) Available-for-Sale Securities ​ ​ ​ ​ ​ ​ ​ Federal agency obligations ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — Mortgage-backed - GSE residential ​ ​ 35,935 ​ ​ 345 12 ​ ​ 132,348 ​ ​ 23,269 51 ​ ​ 168,283 ​ ​ 23,614 63 Collateralized mortgage obligations - GSE residential ​ 47,106 ​ 610 9 ​ 7,863 ​ 528 17 ​ 54,969 ​ 1,138 26 State and political subdivisions ​ 28,063 ​ 282 20 ​ 300,783 ​ 46,398 203 ​ 328,846 ​ 46,680 223 Small Business Administration loan pools ​ ​ 110,885 ​ ​ 2,254 ​ 14 ​ ​ 83 ​ ​ 2 ​ 4 ​ ​ 110,968 ​ ​ 2,256 ​ 18 Corporate bonds ​ — ​ — — ​ 8,568 ​ 1,163 5 ​ 8,568 ​ 1,163 5 Total temporarily impaired AFS securities ​ $ 221,989 ​ $ 3,491 55 ​ $ 449,645 ​ $ 71,360 280 ​ $ 671,634 ​ $ 74,851 335 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ Less than 12 Months ​ 12 Months or More ​ Total ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Fair ​ Unrealized ​ Number of ​ Value Losses Securities Value Losses Securities Value Losses Securities ​ ​ (Dollars in thousands) Available-for-Sale Securities ​ Federal agency obligations $ — ​ $ — ​ — ​ $ — ​ $ — ​ — ​ $ — ​ $ — ​ — U.S. Treasury securities ​ — ​ ​ — ​ — ​ ​ — ​ ​ — ​ — ​ ​ — ​ ​ — ​ — Mortgage-backed - GSE residential ​ 21,523 ​ ​ 56 ​ 5 ​ ​ 137,626 ​ ​ 21,314 ​ 52 ​ ​ 159,149 ​ ​ 21,370 ​ 57 Collateralized mortgage obligations - GSE residential ​ 17,707 ​ ​ 135 ​ 4 ​ ​ 8,469 ​ ​ 539 ​ 17 ​ ​ 26,176 ​ ​ 674 ​ 21 State and political subdivisions ​ 33,577 ​ ​ 207 ​ 20 ​ ​ 287,128 ​ ​ 40,742 ​ 190 ​ ​ 320,705 ​ ​ 40,949 ​ 210 Small Business Administration loan pools ​ 76,380 ​ ​ 959 ​ 11 ​ ​ 91 ​ ​ 2 ​ 4 ​ ​ 76,471 ​ ​ 961 ​ 15 Corporate bonds ​ — ​ ​ — ​ — ​ ​ 8,532 ​ ​ 1,208 ​ 5 ​ ​ 8,532 ​ ​ 1,208 ​ 5 Total temporarily impaired AFS securities $ 149,187 ​ $ 1,357 ​ 40 ​ $ 441,846 ​ $ 63,805 ​ 268 ​ $ 591,033 ​ $ 65,162 ​ 308
Summary of Available-for-sale Securities by Contractual Maturity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ Within ​ After One to ​ After Five to ​ After ​ ​ ​ ​ One Year Five Years Ten Years Ten Years Total ​ ​ ​ (Dollars in thousands) Available-for-sale securities ​ ​ ​ ​ ​ ​ Federal agency obligations (1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ — ​ $ — ​ $ 9,989 ​ $ 9,989 ​ Estimated fair value ​ $ — ​ $ — ​ $ — ​ $ 10,031 ​ $ 10,031 ​ Weighted average yield (2) ​ — % — % — % 6.38 % 6.38 % Mortgage-backed - GSE residential (1) ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ — ​ $ 852 ​ $ 251,142 ​ $ 251,994 ​ Estimated fair value ​ $ — ​ $ — ​ $ 778 ​ $ 227,882 ​ $ 228,660 ​ Weighted average yield (2) ​ — % — % 2.24 % 3.39 % 3.39 % Collateralized mortgage obligations - GSE residential (1) ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 2,190 ​ $ — ​ $ 68,915 ​ $ 71,105 ​ Estimated fair value ​ $ — ​ $ 2,093 ​ $ — ​ $ 68,175 ​ $ 70,268 ​ Weighted average yield (2) ​ — % 2.78 % — % 5.44 % 5.36 % State and political subdivisions (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ 519 ​ $ 3,597 ​ $ 57,443 ​ $ 332,607 ​ $ 394,166 ​ Estimated fair value ​ $ 527 ​ $ 3,576 ​ $ 56,560 ​ $ 287,120 ​ $ 347,783 ​ Weighted average yield (2) ​ 4.41 % 4.27 % 2.81 % 2.52 % 2.58 % Small Business Administration loan pools (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 10 ​ $ 75 ​ $ 123,139 ​ $ 123,224 ​ Estimated fair value ​ $ — ​ $ 10 ​ $ 73 ​ $ 121,210 ​ $ 121,293 ​ Weighted average yield (2) ​ — % 4.96 % 4.07 % 4.86 % 4.86 % Corporate bonds (1) ​ ​ ​ ​ ​ ​ ​ Amortized cost ​ $ — ​ $ 239 ​ $ 9,492 ​ $ — ​ $ 9,731 ​ Estimated fair value ​ $ — ​ $ 229 ​ $ 8,339 ​ $ — ​ $ 8,568 ​ Weighted average yield (2) ​ — % 4.59 % 5.71 % — % 5.69 % Total available-for-sale securities ​ ​ ​ ​ ​ ​ Amortized cost ​ $ 519 ​ $ 6,036 ​ $ 67,862 ​ $ 785,792 ​ $ 860,209 ​ Estimated fair value ​ $ 527 ​ $ 5,908 ​ $ 65,750 ​ $ 714,418 ​ $ 786,603 ​ Weighted average yield (2) ​ 4.41 % 3.74 % 3.21 % 3.47 % 3.46 % (1) Actual maturities may differ from contractual maturities because issuers may have the rights to call or prepay obligations with or without prepayment penalties. (2) Yields are calculated based on amortized cost using 30/360 day basis. Tax-exempt securities are not tax effected. ​
Summary of Equity Securities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended ​ ​ ​ March 31, ​ ​ ​ 2024 ​ 2023 ​ ​ ​ (Dollars in thousands) ​ Net gains recognized during the reporting period on equity securities ​ $ 21 ​ $ 10 ​ Less: net gains recognized during the period on equity securities sold during the period ​ 18 ​ — ​ Unrealized gain recognized during the reporting period on equity securities still held at the reporting date ​ $ 3 ​ $ 10 ​ ​

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2024
Loans and Allowance for Credit Losses
Schedule of Category of Loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ December 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount % of Loans ​ Amount % of Loans ​ ​ ​ (Dollars in thousands) ​ ​ Commercial and industrial ​ $ 2,179,562 35 % ​ $ 2,160,212 35 % ​ Energy ​ 221,217 4 ​ ​ 214,218 3 ​ ​ Commercial real estate - owner-occupied ​ 577,812 9 ​ ​ 566,253 9 ​ ​ Commercial real estate - non-owner-occupied ​ 2,769,936 44 ​ ​ 2,685,534 44 ​ ​ Residential real estate ​ 468,628 7 ​ ​ 464,095 8 ​ ​ Consumer ​ 32,032 1 ​ ​ 37,378 1 ​ ​ Loans, net of unearned fees ​ 6,249,187 100 % ​ 6,127,690 100 % ​ Less: Allowance for credit losses on loans ​ (74,856) ​ ​ ​ (73,462) ​ ​ Loans, net of the allowance for credit losses on loans ​ $ 6,174,331 ​ ​ ​ ​ $ 6,054,228 ​ ​
Schedule of Loan Portfolio Internal Rating Categories Loan Segments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year and Internal Risk Rating ​ Amortized Cost Basis ​ 2024 2023 2022 2021 2020 2019 and Prior Revolving Loans Revolving Loans Converted to Term Loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 162,797 ​ $ 301,628 ​ $ 253,530 ​ $ 158,058 ​ $ 39,382 ​ $ 45,697 ​ $ 1,042,118 ​ $ 57,434 ​ $ 2,060,644 Special mention ​ 1,627 ​ 1,128 ​ 852 ​ 1,966 ​ 12 ​ 43 ​ 24,074 ​ 79 ​ 29,781 Substandard - accrual ​ 1,996 ​ 12,850 ​ 1,848 ​ 6,666 ​ 204 ​ 2,420 ​ 33,699 ​ 18,604 ​ 78,287 Substandard - non-accrual ​ — ​ 2,213 ​ — ​ 264 ​ — ​ 144 ​ 6,105 ​ 129 ​ 8,855 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 1,995 ​ — ​ 1,995 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 166,420 ​ $ 317,819 ​ $ 256,230 ​ $ 166,954 ​ $ 39,598 ​ $ 48,304 ​ $ 1,107,991 ​ $ 76,246 ​ $ 2,179,562 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ — ​ $ 4,583 ​ $ 6,345 ​ $ — ​ $ — ​ $ — ​ $ 208,147 ​ $ 1,944 ​ $ 221,019 Special mention ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 198 ​ — ​ 198 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ - ​ $ 4,583 ​ $ 6,345 ​ $ - ​ $ - ​ $ - ​ $ 208,345 ​ $ 1,944 ​ $ 221,217 Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 6,280 ​ $ 55,911 ​ $ 103,985 ​ $ 116,685 ​ $ 63,069 ​ $ 80,507 ​ $ 76,967 ​ $ 33,023 ​ $ 536,427 Special mention ​ 9,597 ​ 548 ​ 5,291 ​ 9,793 ​ 1,736 ​ 3,114 ​ — ​ 571 ​ 30,650 Substandard - accrual ​ — ​ 2,977 ​ 1,464 ​ — ​ 1,630 ​ 2,800 ​ — ​ 1,528 ​ 10,399 Substandard - non-accrual ​ — ​ — ​ 336 ​ — ​ — ​ — ​ — ​ — ​ 336 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 15,877 ​ $ 59,436 ​ $ 111,076 ​ $ 126,478 ​ $ 66,435 ​ $ 86,421 ​ $ 76,967 ​ $ 35,122 ​ $ 577,812 Commercial real estate - non-owner-occupied ​ ​ ​ — ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 79,617 ​ $ 444,515 ​ $ 862,200 ​ $ 246,477 ​ $ 159,192 ​ $ 114,102 ​ $ 651,858 ​ $ 143,649 ​ $ 2,701,610 Special mention ​ — ​ — ​ 18,908 ​ 7,228 ​ — ​ 18,960 ​ — ​ — ​ 45,096 Substandard - accrual ​ 3,236 ​ 9,619 ​ 4,030 ​ 1,898 ​ 3,627 ​ 298 ​ — ​ — ​ 22,708 Substandard - non-accrual ​ — ​ — ​ 522 ​ — ​ — ​ — ​ — ​ — ​ 522 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 82,853 ​ $ 454,134 ​ $ 885,660 ​ $ 255,603 ​ $ 162,819 ​ $ 133,360 ​ $ 651,858 ​ $ 143,649 ​ $ 2,769,936 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,924 ​ $ 49,465 ​ $ 90,734 ​ $ 80,314 ​ $ 109,425 ​ $ 94,830 ​ $ 36,618 ​ $ — ​ $ 463,310 Special mention ​ — ​ — ​ 1,076 ​ 1,954 ​ 173 ​ — ​ — ​ — ​ 3,203 Substandard - accrual ​ 253 ​ — ​ — ​ 1,310 ​ — ​ 200 ​ 176 ​ — ​ 1,939 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 176 ​ 176 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 2,177 ​ $ 49,465 ​ $ 91,810 ​ $ 83,578 ​ $ 109,598 ​ $ 95,030 ​ $ 36,794 ​ $ 176 ​ $ 468,628 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 45 ​ $ 246 ​ $ 14,638 ​ $ — ​ $ 32,006 Special mention ​ — ​ — ​ — ​ — ​ — ​ 5 ​ — ​ — ​ 5 Substandard - accrual ​ — ​ — ​ — ​ — ​ 21 ​ — ​ — ​ — ​ 21 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 66 ​ $ 251 ​ $ 14,638 ​ $ - ​ $ 32,032 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 251,907 ​ $ 867,097 ​ $ 1,321,175 ​ $ 601,946 ​ $ 371,113 ​ $ 335,382 ​ $ 2,030,346 ​ $ 236,050 ​ $ 6,015,016 Special mention ​ 11,224 ​ 1,676 ​ 26,127 ​ 20,941 ​ 1,921 ​ 22,122 ​ 24,074 ​ 650 ​ 108,735 Substandard - accrual ​ 5,485 ​ 25,446 ​ 7,342 ​ 9,874 ​ 5,482 ​ 5,718 ​ 33,875 ​ 20,132 ​ 113,354 Substandard - non-accrual ​ — ​ 2,213 ​ 858 ​ 264 ​ — ​ 144 ​ 6,105 ​ 305 ​ 9,889 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 2,193 ​ — ​ 2,193 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 268,616 ​ $ 896,432 ​ $ 1,355,502 ​ $ 633,025 ​ $ 378,516 ​ $ 363,366 ​ $ 2,096,593 ​ $ 257,137 ​ $ 6,249,187 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year and Internal Risk Rating ​ Amortized Cost Basis ​ 2023 2022 2021 2020 2019 2018 and Prior Revolving Loans Revolving Loans Converted to Term Loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 379,360 ​ $ 258,182 ​ $ 193,302 ​ $ 54,901 ​ $ 38,762 ​ $ 18,801 ​ $ 1,061,365 ​ $ 53,015 ​ $ 2,057,688 Special mention ​ 2,442 ​ 925 ​ 6,000 ​ 2,674 ​ 1,460 ​ 26 ​ 9,748 ​ 3,175 ​ 26,450 Substandard - accrual ​ 12,655 ​ 1,877 ​ 5,101 ​ 238 ​ 598 ​ 815 ​ 28,652 ​ 16,831 ​ 66,767 Substandard - non-accrual ​ — ​ — ​ 266 ​ 24 ​ — ​ — ​ 6,848 ​ 178 ​ 7,316 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 1,991 ​ — ​ 1,991 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 394,457 ​ $ 260,984 ​ $ 204,669 ​ $ 57,837 ​ $ 40,820 ​ $ 19,642 ​ $ 1,108,604 ​ $ 73,199 ​ $ 2,160,212 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,218 ​ $ 107 ​ $ 213,930 Special mention ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,506 ​ $ 107 ​ $ 214,218 Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 56,236 ​ $ 92,148 ​ $ 119,684 ​ $ 62,072 ​ $ 49,992 ​ $ 32,936 ​ $ 76,782 ​ $ 36,263 ​ $ 526,113 Special mention ​ 10,095 ​ 6,798 ​ 8,522 ​ 1,747 ​ 793 ​ 2,448 ​ — ​ 576 ​ 30,979 Substandard - accrual ​ 2,977 ​ — ​ — ​ 1,635 ​ 770 ​ 2,047 ​ — ​ 1,528 ​ 8,957 Substandard - non-accrual ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 69,308 ​ $ 98,946 ​ $ 128,410 ​ $ 65,454 ​ $ 51,555 ​ $ 37,431 ​ $ 76,782 ​ $ 38,367 ​ $ 566,253 Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 477,238 ​ $ 842,755 ​ $ 242,405 ​ $ 161,845 ​ $ 65,540 ​ $ 50,062 ​ $ 626,998 ​ $ 145,621 ​ $ 2,612,464 Special mention ​ — ​ 18,939 ​ 7,331 ​ — ​ 17,208 ​ 4,052 ​ — ​ — ​ 47,530 Substandard - accrual ​ 10,341 ​ — ​ 2,396 ​ 3,626 ​ — ​ 298 ​ — ​ 439 ​ 17,100 Substandard - non-accrual ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ — ​ — ​ — ​ 8,440 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 487,579 ​ $ 862,407 ​ $ 258,161 ​ $ 167,169 ​ $ 82,748 ​ $ 54,412 ​ $ 626,998 ​ $ 146,060 ​ $ 2,685,534 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 37,676 ​ $ 86,919 ​ $ 82,390 ​ $ 110,853 ​ $ 36,589 ​ $ 62,288 ​ $ 37,619 ​ $ — ​ $ 454,334 Special mention ​ — ​ 813 ​ 3,519 ​ 176 ​ — ​ — ​ — ​ — ​ 4,508 Substandard - accrual ​ 253 ​ — ​ 1,317 ​ 3,125 ​ 203 ​ — ​ 176 ​ — ​ 5,074 Substandard - non-accrual ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 179 ​ 179 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 37,929 ​ $ 87,732 ​ $ 87,226 ​ $ 114,154 ​ $ 36,792 ​ $ 62,288 ​ $ 37,795 ​ $ 179 ​ $ 464,095 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 11,591 ​ $ 6,004 ​ $ 462 ​ $ 54 ​ $ 221 ​ $ 25 ​ $ 18,960 ​ $ — ​ $ 37,317 Special mention ​ — ​ — ​ — ​ — ​ — ​ 5 ​ — ​ — ​ 5 Substandard - accrual ​ — ​ — ​ — ​ 23 ​ — ​ — ​ — ​ — ​ 23 Substandard - non-accrual ​ — ​ 33 ​ — ​ — ​ — ​ — ​ — ​ — ​ 33 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 11,591 ​ $ 6,037 ​ $ 462 ​ $ 77 ​ $ 221 ​ $ 30 ​ $ 18,960 ​ $ — ​ $ 37,378 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 966,682 ​ $ 1,292,876 ​ $ 638,243 ​ $ 389,881 ​ $ 191,104 ​ $ 164,112 ​ $ 2,023,942 ​ $ 235,006 ​ $ 5,901,846 Special mention ​ 12,537 ​ 27,475 ​ 25,372 ​ 4,597 ​ 19,461 ​ 6,531 ​ 9,748 ​ 3,751 ​ 109,472 Substandard - accrual ​ 26,226 ​ 1,877 ​ 8,814 ​ 8,647 ​ 1,571 ​ 3,160 ​ 28,828 ​ 18,798 ​ 97,921 Substandard - non-accrual ​ — ​ 746 ​ 6,499 ​ 1,722 ​ — ​ — ​ 6,848 ​ 357 ​ 16,172 Doubtful ​ — ​ — ​ — ​ — ​ — ​ — ​ 2,279 ​ — ​ 2,279 Loss ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ 1,005,445 ​ $ 1,322,974 ​ $ 678,928 ​ $ 404,847 ​ $ 212,136 ​ $ 173,803 ​ $ 2,071,645 ​ $ 257,912 ​ $ 6,127,690
Schedule of Loan Aging Analysis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year and Past Due Status ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 and ​ ​ ​ ​ converted to ​ ​ ​ ​ 2024 2023 2022 2021 2020 Prior Revolving loans term loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 2,558 ​ $ 150 ​ $ 448 ​ $ - ​ $ 274 ​ $ 4,672 ​ $ - ​ $ 8,102 60-89 days ​ - ​ 62 ​ 18 ​ - ​ - ​ - ​ ​ 2,154 ​ - ​ 2,234 Greater than 90 days ​ - ​ 280 ​ - ​ 331 ​ - ​ 144 ​ ​ 8,548 ​ - ​ 9,303 Total past due ​ - ​ 2,900 ​ 168 ​ 779 ​ - ​ 418 ​ 15,374 ​ - ​ 19,639 Current ​ 166,420 ​ 314,919 ​ ​ 256,062 ​ ​ 166,175 ​ ​ 39,598 ​ ​ 47,886 ​ ​ 1,092,617 ​ ​ 76,246 ​ 2,159,923 Total ​ $ 166,420 ​ $ 317,819 ​ $ 256,230 ​ $ 166,954 ​ $ 39,598 ​ $ 48,304 ​ $ 1,107,991 ​ $ 76,246 ​ $ 2,179,562 Greater than 90 days and accruing ​ $ - ​ $ 280 ​ $ - ​ $ 67 ​ $ - ​ $ - ​ $ 447 ​ $ - ​ $ 794 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 198 ​ ​ - ​ 198 Total past due ​ - ​ - ​ - ​ - ​ - ​ - ​ 198 ​ - ​ 198 Current ​ - ​ ​ 4,583 ​ ​ 6,345 ​ ​ - ​ ​ - ​ ​ - ​ ​ 208,147 ​ ​ 1,944 ​ ​ 221,019 Total ​ $ - ​ $ 4,583 ​ $ 6,345 ​ $ - ​ $ - ​ $ - ​ $ 208,345 ​ $ 1,944 ​ $ 221,217 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 2,977 ​ $ 336 ​ $ - ​ $ - ​ $ - ​ $ - ​ $ 1,528 ​ $ 4,841 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 416 ​ ​ 229 ​ ​ - ​ ​ - ​ 645 Total past due ​ - ​ 2,977 ​ 336 ​ - ​ 416 ​ 229 ​ - ​ 1,528 ​ 5,486 Current ​ 15,877 ​ ​ 56,459 ​ ​ 110,740 ​ ​ 126,478 ​ ​ 66,019 ​ ​ 86,192 ​ ​ 76,967 ​ ​ 33,594 ​ ​ 572,326 Total ​ $ 15,877 ​ $ 59,436 ​ $ 111,076 ​ $ 126,478 ​ $ 66,435 ​ $ 86,421 ​ $ 76,967 ​ $ 35,122 ​ $ 577,812 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ 416 ​ $ 229 ​ $ - ​ $ - ​ $ 645 Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 18,853 ​ $ 4,717 ​ $ - ​ $ - ​ $ 141 ​ $ 5,606 ​ $ - ​ $ 29,317 60-89 days ​ - ​ ​ 573 ​ ​ - ​ ​ - ​ ​ 816 ​ ​ 68 ​ ​ - ​ ​ - ​ 1,457 Greater than 90 days ​ - ​ ​ - ​ ​ 522 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ 522 Total past due ​ - ​ 19,426 ​ 5,239 ​ - ​ 816 ​ 209 ​ 5,606 ​ - ​ 31,296 Current ​ 82,853 ​ ​ 434,708 ​ ​ 880,421 ​ ​ 255,603 ​ ​ 162,003 ​ ​ 133,151 ​ ​ 646,252 ​ ​ 143,649 ​ 2,738,640 Total ​ $ 82,853 ​ $ 454,134 ​ $ 885,660 ​ $ 255,603 ​ $ 162,819 ​ $ 133,360 ​ $ 651,858 ​ $ 143,649 ​ $ 2,769,936 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ 6 ​ $ 89 ​ $ 136 ​ $ - ​ $ - ​ $ - ​ $ 231 60-89 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ 1,310 ​ ​ - ​ ​ - ​ ​ 176 ​ ​ - ​ 1,486 Total past due ​ - ​ - ​ 6 ​ 1,399 ​ 136 ​ - ​ 176 ​ - ​ 1,717 Current ​ 2,177 ​ ​ 49,465 ​ ​ 91,804 ​ ​ 82,179 ​ ​ 109,462 ​ ​ 95,030 ​ ​ 36,618 ​ ​ 176 ​ 466,911 Total ​ $ 2,177 ​ $ 49,465 ​ $ 91,810 ​ $ 83,578 ​ $ 109,598 ​ $ 95,030 ​ $ 36,794 ​ $ 176 ​ $ 468,628 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ 1,310 ​ $ - ​ $ - ​ $ 176 ​ $ - ​ $ 1,486 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ - ​ $ 4 ​ $ 22 ​ $ - ​ $ - ​ $ 135 ​ $ - ​ $ 161 60-89 days ​ - ​ ​ - ​ ​ 17 ​ ​ 16 ​ ​ - ​ ​ 5 ​ ​ - ​ ​ - ​ 38 Greater than 90 days ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ - Total past due ​ - ​ - ​ 21 ​ 38 ​ - ​ 5 ​ 135 ​ - ​ 199 Current ​ 1,289 ​ ​ 10,995 ​ ​ 4,360 ​ ​ 374 ​ ​ 66 ​ ​ 246 ​ ​ 14,503 ​ ​ - ​ 31,833 Total ​ $ 1,289 ​ $ 10,995 ​ $ 4,381 ​ $ 412 ​ $ 66 ​ $ 251 ​ $ 14,638 ​ $ - ​ $ 32,032 Greater than 90 days and accruing ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - ​ $ - Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ - ​ $ 24,388 ​ $ 5,213 ​ $ 559 ​ $ 136 ​ $ 415 ​ $ 10,413 ​ $ 1,528 ​ $ 42,652 60-89 days ​ - ​ 635 ​ 35 ​ 16 ​ 816 ​ 73 ​ 2,154 ​ - ​ 3,729 Greater than 90 days ​ - ​ 280 ​ 522 ​ 1,641 ​ 416 ​ 373 ​ 8,922 ​ - ​ 12,154 Total past due ​ - ​ 25,303 ​ 5,770 ​ 2,216 ​ 1,368 ​ 861 ​ 21,489 ​ 1,528 ​ 58,535 Current ​ 268,616 ​ 871,129 ​ 1,349,732 ​ 630,809 ​ 377,148 ​ 362,505 ​ 2,075,104 ​ 255,609 ​ 6,190,652 Total ​ $ 268,616 ​ $ 896,432 ​ $ 1,355,502 ​ $ 633,025 ​ $ 378,516 ​ $ 363,366 ​ $ 2,096,593 ​ $ 257,137 ​ $ 6,249,187 Greater than 90 days and accruing ​ $ - ​ $ 280 ​ $ - ​ $ 1,377 ​ $ 416 ​ $ 229 ​ $ 623 ​ $ - ​ $ 2,925 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year and Past Due Status ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 and ​ ​ ​ ​ converted to ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving loans term loans Total ​ ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ 250 ​ $ 178 ​ $ — ​ $ 81 ​ $ — ​ $ 136 ​ $ 158 ​ $ 151 ​ $ 954 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ 30 ​ 28 ​ 347 ​ 24 ​ 199 ​ — ​ 10,800 ​ 2,376 ​ 13,804 Total past due ​ 280 ​ 206 ​ 347 ​ 105 ​ 199 ​ 136 ​ 10,958 ​ 2,527 ​ 14,758 Current ​ 394,177 ​ 260,778 ​ 204,322 ​ 57,732 ​ 40,621 ​ 19,506 ​ 1,097,646 ​ 70,672 ​ 2,145,454 Total ​ $ 394,457 ​ $ 260,984 ​ $ 204,669 ​ $ 57,837 ​ $ 40,820 ​ $ 19,642 ​ $ 1,108,604 ​ $ 73,199 ​ $ 2,160,212 Greater than 90 days and accruing ​ $ 30 ​ $ 28 ​ $ 81 ​ $ — ​ $ 199 ​ $ — ​ $ 2,000 ​ $ 2,199 ​ $ 4,537 Energy ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 30 ​ $ — ​ $ 30 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 Total past due ​ — ​ — ​ — ​ — ​ — ​ — ​ 318 ​ — ​ 318 Current ​ 4,581 ​ 6,868 ​ — ​ 156 ​ — ​ — ​ 202,188 ​ 107 ​ 213,900 Total ​ $ 4,581 ​ $ 6,868 ​ $ — ​ $ 156 ​ $ — ​ $ — ​ $ 202,506 ​ $ 107 ​ $ 214,218 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Commercial real estate - owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ 371 ​ $ — ​ $ 71 ​ $ — ​ $ — ​ $ 442 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 Total past due ​ — ​ — ​ 204 ​ 371 ​ — ​ 71 ​ — ​ — ​ 646 Current ​ 69,308 ​ 98,946 ​ 128,206 ​ 65,083 ​ 51,555 ​ 37,360 ​ 76,782 ​ 38,367 ​ 565,607 Total ​ $ 69,308 ​ $ 98,946 ​ $ 128,410 ​ $ 65,454 ​ $ 51,555 ​ $ 37,431 ​ $ 76,782 ​ $ 38,367 ​ $ 566,253 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — Commercial real estate - non-owner-occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ 307 ​ — ​ — ​ 8,747 Total past due ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ 307 ​ — ​ — ​ 8,747 Current ​ 487,579 ​ 861,694 ​ 252,132 ​ 165,471 ​ 82,748 ​ 54,105 ​ 626,998 ​ 146,060 ​ 2,676,787 Total ​ $ 487,579 ​ $ 862,407 ​ $ 258,161 ​ $ 167,169 ​ $ 82,748 ​ $ 54,412 ​ $ 626,998 ​ $ 146,060 ​ $ 2,685,534 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 307 ​ $ — ​ $ — ​ $ 307 Residential real estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ 6 ​ $ — ​ $ 137 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 143 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ — ​ 1,317 ​ — ​ — ​ — ​ 176 ​ — ​ 1,493 Total past due ​ — ​ 6 ​ 1,317 ​ 137 ​ — ​ — ​ 176 ​ — ​ 1,636 Current ​ 37,929 ​ 87,726 ​ 85,909 ​ 114,017 ​ 36,792 ​ 62,288 ​ 37,619 ​ 179 ​ 462,459 Total ​ $ 37,929 ​ $ 87,732 ​ $ 87,226 ​ $ 114,154 ​ $ 36,792 ​ $ 62,288 ​ $ 37,795 ​ $ 179 ​ $ 464,095 Greater than 90 days and accruing ​ $ — ​ $ — ​ $ 1,317 ​ $ — ​ $ — ​ $ — ​ $ 176 ​ $ — ​ $ 1,493 Consumer ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ — ​ $ 219 ​ $ 40 ​ $ — ​ $ — ​ $ — ​ $ 200 ​ $ — ​ $ 459 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ — ​ 35 ​ — ​ — ​ — ​ — ​ — ​ — ​ 35 Total past due ​ — ​ 254 ​ 40 ​ — ​ — ​ — ​ 200 ​ — ​ 494 Current ​ 11,591 ​ 5,783 ​ 422 ​ 77 ​ 221 ​ 30 ​ 18,760 ​ — ​ 36,884 Total ​ $ 11,591 ​ $ 6,037 ​ $ 462 ​ $ 77 ​ $ 221 ​ $ 30 ​ $ 18,960 ​ $ — ​ $ 37,378 Greater than 90 days and accruing ​ $ — ​ $ 2 ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ — ​ $ 2 Total ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 30-59 days ​ $ 250 ​ $ 403 ​ $ 40 ​ $ 589 ​ $ — ​ $ 207 ​ $ 388 ​ $ 151 ​ $ 2,028 60-89 days ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Greater than 90 days ​ 30 ​ 776 ​ 7,897 ​ 1,722 ​ 199 ​ 307 ​ 11,264 ​ 2,376 ​ 24,571 Total past due ​ 280 ​ 1,179 ​ 7,937 ​ 2,311 ​ 199 ​ 514 ​ 11,652 ​ 2,527 ​ 26,599 Current ​ 1,005,165 ​ 1,321,795 ​ 670,991 ​ 402,536 ​ 211,937 ​ 173,289 ​ 2,059,993 ​ 255,385 ​ 6,101,091 Total ​ $ 1,005,445 ​ $ 1,322,974 ​ $ 678,928 ​ $ 404,847 ​ $ 212,136 ​ $ 173,803 ​ $ 2,071,645 ​ $ 257,912 ​ $ 6,127,690 Greater than 90 days and accruing ​ $ 30 ​ $ 30 ​ $ 1,398 ​ $ — ​ $ 199 ​ $ 307 ​ $ 2,176 ​ $ 2,199 ​ $ 6,339
Schedule of Nonaccrual Loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Amortized Cost Basis by Origination Year ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ ​ Non-accrual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ loans ​ ​ ​ ​ Loans with ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 and ​ Revolving ​ converted ​ Total Non- ​ no related ​ 2024 2023 2022 2021 2020 Prior loans to term loans accrual Loans Allowance ​ ​ (Dollars in thousands) Commercial and industrial ​ $ — ​ $ 2,213 ​ $ — ​ $ 264 ​ $ — ​ $ 144 ​ $ 8,100 ​ $ 129 ​ $ 10,850 ​ $ 5,717 Energy ​ — ​ — ​ — ​ — ​ — ​ — ​ 198 ​ — ​ 198 ​ 198 Commercial real estate - owner-occupied ​ — ​ — ​ 336 ​ — ​ — ​ — ​ — ​ — ​ 336 ​ 336 Commercial real estate - non-owner-occupied ​ — ​ — ​ 522 ​ — ​ — ​ — ​ — ​ — ​ 522 ​ — Residential real estate ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 176 ​ 176 ​ 176 Consumer ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ — ​ $ 2,213 ​ $ 858 ​ $ 264 ​ $ — ​ $ 144 ​ $ 8,298 ​ $ 305 ​ $ 12,082 ​ $ 6,427 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ Amortized Cost Basis by Origination Year ​ Amortized Cost Basis ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ ​ Non-accrual ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ loans ​ ​ ​ ​ Loans with ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2018 and ​ Revolving ​ converted ​ Total Non- ​ no related ​ 2023 2022 2021 2020 2019 Prior loans to term loans accrual Loans Allowance ​ ​ (Dollars in thousands) Commercial and industrial ​ $ — ​ $ — ​ $ 266 ​ $ 24 ​ $ — ​ $ — ​ $ 8,839 ​ $ 178 ​ $ 9,307 ​ $ 6,198 Energy ​ — ​ — ​ — ​ — ​ — ​ — ​ 288 ​ — ​ 288 ​ 288 Commercial real estate - owner-occupied ​ — ​ — ​ 204 ​ — ​ — ​ — ​ — ​ — ​ 204 ​ 204 Commercial real estate - non-owner-occupied ​ — ​ 713 ​ 6,029 ​ 1,698 ​ — ​ — ​ — ​ — ​ 8,440 ​ 1,698 Residential real estate ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ 179 ​ 179 ​ 179 Consumer ​ — ​ 33 ​ — ​ — ​ — ​ — ​ — ​ — ​ 33 ​ 33 Total ​ $ — ​ $ 746 ​ $ 6,499 ​ $ 1,722 ​ $ — ​ $ — ​ $ 9,127 ​ $ 357 ​ $ 18,451 ​ $ 8,600
Summary of Allowance for Credit Losses	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ For the Three Months Ended March 31, 2024 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Real Estate ​ Real Estate ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ ​ ​ ​ Owner- ​ Non-owner- ​ Residential ​ ​ ​ ​ ​ ​ ​ and Industrial Energy Occupied Occupied Real Estate Consumer Total ​ ​ (Dollars in thousands) Allowance for Credit Losses: ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 32,244 ​ $ 3,143 ​ $ 6,445 ​ $ 28,130 ​ $ 3,456 ​ $ 44 ​ $ 73,462 Charge-offs ​ (786) ​ — ​ — ​ (848) ​ — ​ — ​ (1,634) Recoveries ​ 55 ​ 118 ​ — ​ — ​ — ​ — ​ 173 Provision (release) ​ 2,308 ​ (92) ​ (60) ​ 707 ​ 10 ​ (18) ​ 2,855 Ending balance ​ $ 33,821 ​ $ 3,169 ​ $ 6,385 ​ $ 27,989 ​ $ 3,466 ​ $ 26 ​ $ 74,856 Allowance for Credit Losses on Off-Balance Sheet Credit Exposures: ​ ​ ​ ​ ​ ​ ​ ​ Beginning balance ​ $ 954 ​ $ 149 ​ $ 125 ​ $ 5,096 ​ $ 89 ​ $ — ​ $ 6,413 Provision (release) ​ 54 ​ (149) ​ (36) ​ (1,076) ​ 6 ​ 1 ​ (1,200) Ending balance ​ $ 1,008 ​ $ — ​ $ 89 ​ $ 4,020 ​ $ 95 ​ $ 1 ​ $ 5,213
Net Charge-offs By Year of Origination	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Gross Charge-offs by Origination Year ​ Gross Charge-offs ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Revolving ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ converted ​ Gross ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2019 and ​ Revolving ​ to term ​ Charge- ​ ​ 2024 ​ 2023 ​ 2022 ​ 2021 ​ 2020 ​ Prior ​ loans ​ loans ​ offs ​ ​ (Dollars in thousands) Commercial and industrial $ — $ — $ — $ — $ 24 $ — $ 584 $ 178 $ 786 Energy ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Commercial real estate - owner-occupied ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Commercial real estate - non-owner-occupied ​ — ​ — ​ 163 ​ — ​ — ​ — ​ — ​ 685 ​ 848 Residential real estate ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Consumer ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — ​ — Total ​ $ — ​ $ — ​ $ 163 ​ $ — ​ $ 24 ​ $ — ​ $ 584 ​ $ 863 ​ $ 1,634
Schedule of Collateral Dependent Loans	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost of ​ ​ ​ ​ ​ ​ ​ ​ Collateral ​ ​ Amortized Cost of ​ Related Allowance ​ Dependent Loans ​ ​ Collateral ​ for ​ with no related Loan Segment and Collateral Description Dependent Loans Credit Losses Allowance ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ All business assets ​ $ 10,822 ​ $ 2,926 ​ $ 5,688 Energy ​ ​ ​ Oil and natural gas properties ​ 198 ​ — ​ 198 Commercial real estate - owner-occupied ​ ​ ​ Commercial real estate properties ​ 336 ​ — ​ 336 Commercial real estate - non-owner-occupied ​ ​ ​ Commercial real estate properties ​ 550 ​ 16 ​ — Residential real estate ​ ​ ​ Residential real estate properties ​ 176 ​ — ​ 176 ​ ​ $ 12,082 ​ $ 2,942 ​ $ 6,398 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of December 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ Amortized Cost of ​ ​ ​ ​ ​ ​ ​ ​ Collateral ​ ​ Amortized Cost of ​ Related Allowance ​ Dependent Loans ​ ​ Collateral ​ for ​ with no related Loan Segment and Collateral Description Dependent Loans Credit Losses Allowance ​ (Dollars in thousands) Commercial and industrial ​ ​ ​ All business assets ​ $ 9,308 ​ $ 1,392 ​ $ 6,198 Energy ​ ​ ​ ​ Oil and natural gas properties ​ 288 ​ — ​ 288 Commercial real estate - owner-occupied ​ ​ ​ Commercial real estate properties ​ 204 ​ — ​ 204 Commercial real estate - non-owner-occupied ​ ​ ​ Commercial real estate properties ​ 8,440 ​ 571 ​ 1,698 Residential real estate ​ ​ ​ Residential real estate properties ​ 179 ​ — ​ 179 Consumer ​ ​ ​ Vehicles & other personal assets ​ — ​ — ​ — ​ ​ $ 18,419 ​ $ 1,963 ​ $ 8,567
Summary of Loan Modifications	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Term Extension ​ ​ Amortized Cost Basis ​ % of Loan Class ​ ​ (Dollars in thousands) ​ ​ Commercial and industrial $ 7,272 ​ 0.33 % Commercial real estate - owner-occupied ​ 4,568 ​ 0.79 ​ Commercial real estate - non-owner-occupied ​ ​ 3,236 ​ ​ 0.12 ​ Residential real estate ​ ​ 253 ​ ​ 0.05 ​ Total Loans ​ $ 15,329 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Balance at March 31, 2024 ​ ​ ​ ​ ​ 30-59 Days ​ 60-89 Days ​ Greater than 90 ​ Total ​ ​ Current ​ Past Due ​ Past Due ​ Days Past Due ​ Past Due ​ ​ (Dollars in thousands) Commercial and industrial $ 7,022 $ 250 $ — $ — $ 250 Commercial real estate - owner-occupied ​ 64 ​ 4,504 ​ — ​ — ​ 4,504 Commercial real estate - non-owner-occupied ​ ​ 3,236 ​ ​ — ​ ​ — ​ ​ — ​ ​ — Residential real estate ​ ​ 253 ​ ​ — ​ ​ — ​ ​ — ​ ​ — Total Loans ​ $ 10,575 ​ $ 4,754 ​ $ — ​ $ — ​ $ 4,754 ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Financial Effect ​ ​ Term Extension Commercial and industrial Added a weighted average 1.1 years to the life of loan, which reduced monthly payment amounts Commercial real estate - owner-occupied ​ Added a weighted average 0.5 years to the life of loan, which reduced monthly payment amounts Commercial real estate - non-owner-occupied ​ Added a weighted average 0.5 years to the life of loan, which reduced monthly payment amounts Residential real estate ​ Added a weighted average 0.4 years to the life of loan, which reduced monthly payment amounts

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2024
Leases
Schedule of components of operating lease expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ ​ 2024 ​ 2023 ​ ​ ​ (Dollars in thousands) ​ Finance lease amortization of right-of-use asset ​ $ 73 ​ $ 70 ​ Finance lease interest on lease liability ​ 66 ​ 69 ​ Operating lease expense ​ 862 ​ 732 ​ Variable lease expense ​ 339 ​ 393 ​ Short-term lease expense ​ 6 ​ 5 ​ Total lease expense ​ $ 1,346 ​ $ 1,269 ​
Schedule of future minimum lease payments under operating lease	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Operating Leases ​ Finance Leases ​ ​ (Dollars in thousands) 2024 $ 2,815 $ 367 2025 ​ 3,806 ​ 490 2026 ​ 3,852 ​ 490 2027 ​ 3,847 ​ 528 2028 ​ 3,427 ​ 540 Thereafter ​ 10,750 ​ 7,705 Total lease payments ​ 28,497 ​ 10,120 Less: imputed interest ​ 2,775 ​ 2,776 Total ​ $ 25,722 ​ $ 7,344

Goodwill and Core Deposit Int_2

Goodwill and Core Deposit Intangible (Tables)	3 Months Ended
	Mar. 31, 2024
Goodwill and Core Deposit Intangible
Schedule of change in goodwill and core deposit intangible	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross Carrying ​ Accumulated ​ Net Carrying ​ ​ Amount ​ Amortization ​ Amount ​ ​ (Dollars in thousands) March 31, 2024 ​ ​ ​ Goodwill ​ $ 14,135 ​ $ — ​ $ 14,135 Core deposit intangible ​ 21,938 ​ 5,669 ​ 16,269 Total goodwill and intangible assets ​ $ 36,073 ​ $ 5,669 ​ $ 30,404 December 31, 2023 ​ ​ ​ Goodwill ​ $ 14,135 ​ $ — ​ $ 14,135 Core deposit intangible ​ ​ 21,938 ​ 4,738 ​ 17,200 Total goodwill and intangible assets ​ $ 36,073 ​ $ 4,738 ​ $ 31,335
Schedule of core deposit intangible future amortization expense	​ ​ ​ ​ ​ (Dollars in thousands) ​ ​ For the nine months ending December 31, 2024 ​ $ 2,638 For the year ending December 31, 2025 ​ 3,155 For the year ending December 31, 2026 ​ 2,739 For the year ending December 31, 2027 ​ 2,325 For the year ending December 31, 2028 ​ 1,909 ​

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	3 Months Ended
	Mar. 31, 2024
Derivatives and Hedging
Schedule of Derivative Instruments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Asset Derivatives ​ Liability Derivatives ​ ​ Statement of ​ ​ ​ ​ ​ ​ ​ Statement of ​ ​ ​ ​ ​ ​ ​ ​ Financial ​ ​ ​ Financial ​ ​ ​ ​ Condition ​ March 31, ​ December 31, ​ Condition ​ March 31, ​ December 31, ​ ​ Location ​ 2024 ​ 2023 ​ Location ​ 2024 ​ 2023 ​ ​ (Dollars in thousands) Interest rate products: ​ ​ ​ ​ Derivatives designated as hedging instruments Other assets and Interest receivable ​ $ — ​ $ 101 Interest payable and other liabilities ​ $ 8,083 ​ $ 5,992 Derivatives not designated as hedging instruments Other assets and Interest receivable ​ ​ 9,366 ​ ​ 7,830 Interest payable and other liabilities ​ ​ 9,366 ​ ​ 7,837 Total ​ $ 9,366 ​ $ 7,931 ​ $ 17,449 ​ $ 13,829
Schedule of Cash Flow Hedge on Accumulated Other Comprehensive Income	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ Location of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Gain or ​ Gain or (Loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) ​ (Loss) ​ Recognized ​ ​ ​ ​ ​ ​ ​ Gain or ​ Reclassified ​ Reclassified ​ from ​ ​ ​ ​ Gain or ​ Gain or ​ (Loss) ​ from ​ from ​ Accumulated ​ Gain or ​ (Loss) ​ (Loss) ​ Reclassified ​ Accumulated ​ Accumulated ​ Other ​ (Loss) ​ Recognized ​ Recognized ​ from ​ OCI into ​ OCI into ​ Comprehensive ​ Recognized ​ in OCI ​ in OCI ​ Accumulated ​ Earnings ​ Earnings ​ Income into ​ in OCI on ​ Included ​ Excluded ​ OCI into ​ Included ​ Excluded ​ Earnings ​ Derivative Component Component Earnings Component Component ​ ​ ​ ​ (Dollars in thousands) Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ Interest Rate Products ​ Interest Income ​ $ (3,215) ​ $ (3,215) ​ $ — $ (1,124) ​ $ (1,124) ​ $ — Interest Rate Products ​ Interest Expense ​ 10 ​ 10 ​ — 196 ​ 196 ​ — Total ​ ​ $ (3,205) ​ $ (3,205) ​ $ — $ (928) ​ $ (928) ​ $ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Location of ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Gain or ​ Gain or (Loss) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ (Loss) ​ (Loss) ​ Recognized ​ ​ ​ ​ ​ ​ ​ ​ ​ Gain or ​ Reclassified ​ Reclassified ​ from ​ ​ ​ Gain or ​ Gain or ​ (Loss) ​ from ​ from ​ Accumulated ​ Gain or ​ (Loss) ​ (Loss) ​ Reclassified ​ Accumulated ​ Accumulated ​ Other ​ (Loss) ​ Recognized ​ Recognized ​ from ​ OCI into ​ OCI into ​ Comprehensive ​ Recognized ​ in OCI ​ in OCI ​ Accumulated ​ Earnings ​ Earnings ​ Income into ​ in OCI on ​ Included ​ Excluded ​ OCI into ​ Included ​ Excluded ​ Earnings ​ Derivative Component Component Earnings Component Component ​ ​ ​ ​ (Dollars in thousands) Derivatives in Cash Flow Hedging Relationships ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest Rate Products ​ Interest Expense ​ $ 1,540 ​ $ 1,540 ​ $ — $ — ​ $ — ​ $ — Total ​ ​ $ 1,540 ​ $ 1,540 ​ $ — $ — ​ $ — ​ $ —

Time Deposits and Borrowings (T

Time Deposits and Borrowings (Tables)	3 Months Ended
	Mar. 31, 2024
Time Deposits and Borrowings
Schedule of Time Deposit Maturities and Borrowings	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 2024 ​ ​ Within One ​ One to Two ​ Two to Three ​ Three to ​ Four to Five ​ After Five ​ ​ ​ ​ Year Years Years Four Years Years Years Total ​ ​ (Dollars in thousands) Time deposits ​ $ 1,662,674 ​ $ 170,867 ​ $ 1,305 ​ $ 1,500 ​ $ 790 ​ $ — ​ $ 1,837,136 FHLB borrowings ​ 1,549 ​ 11,291 ​ — ​ 50,000 ​ 15,000 ​ — ​ 77,840 SBA secured borrowing ​ — ​ — ​ — ​ — ​ — ​ 7,778 ​ 7,778 Trust preferred securities (1) ​ — ​ — ​ — ​ — ​ — ​ 1,133 ​ 1,133 Total ​ $ 1,664,223 ​ $ 182,158 ​ $ 1,305 ​ $ 51,500 ​ $ 15,790 ​ $ 8,911 ​ $ 1,923,887 (1) The contract value of the trust preferred securities is $2.6 million and is currently being accreted to the maturity date of 2035.

Changes in Accumulated Other _2

Changes in Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2024
Changes in Accumulated Other Comprehensive Loss
Schedule of amounts reclassified from AOCI	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ Affected Line Item in the ​ 2024 2023 Statements of Operations ​ ​ (Dollars in thousands) ​ ​ Realized gain on available-for-sale securities ​ $ 2 ​ $ 63 ​ Other non-interest income Less: tax expense effect ​ — ​ 15 ​ Income tax expense Realized gain on available-for-sale securities, net of income tax ​ ​ 2 ​ ​ 48 ​ ​ Loss on cash flow hedges ​ ​ (1,124) ​ ​ — ​ Interest income - Loans Gain on cash flow hedges ​ ​ 196 ​ ​ — ​ Interest expense - Deposits Less: tax benefit effect ​ ​ (214) ​ ​ — ​ Income tax expense Net loss on cash flow hedges, net of tax ​ ​ (714) ​ ​ — ​ ​ Total reclassified amount ​ $ (712) ​ $ 48 ​ ​

Regulatory Matters (Tables)

Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2024
Regulatory Matters
Schedule of actual capital amounts and ratios	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Required to be Considered Required to be Considered ​ ​ Actual ​ Well Capitalized ​ Adequately Capitalized (1) ​ Amount Ratio Amount Ratio Amount Ratio ​ ​ (Dollars in thousands) March 31, 2024 ​ ​ ​ ​ Total Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ $ 825,110 11.4 % ​ N/A N/A ​ $ 761,189 10.5 % Bank ​ 806,893 11.1 ​ $ 724,451 10.0 % 760,673 10.5 ​ Tier 1 Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 745,321 10.3 ​ N/A N/A ​ 616,201 8.5 ​ Bank ​ 727,104 10.0 ​ 579,561 8.0 ​ 615,783 8.5 ​ Common Equity Tier 1 to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 736,438 10.2 ​ N/A N/A ​ 507,460 7.0 ​ Bank ​ 727,104 10.0 ​ 470,893 6.5 ​ 507,116 7.0 ​ Tier 1 Capital to Average Assets ​ ​ ​ ​ Consolidated ​ 745,321 10.1 ​ N/A N/A ​ 295,231 4.0 ​ Bank ​ $ 727,104 9.9 % $ 369,073 5.0 % $ 295,258 4.0 % December 31, 2023 ​ ​ ​ ​ Total Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ $ 807,018 11.2 % ​ N/A N/A ​ $ 756,285 10.5 % Bank ​ 800,522 11.1 ​ $ 719,705 10.0 % 755,691 10.5 ​ Tier 1 Capital to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 727,723 10.1 ​ N/A N/A ​ 612,231 8.5 ​ Bank ​ 721,227 10.0 ​ 575,764 8.0 ​ 611,750 8.5 ​ Common Equity Tier 1 to Risk-Weighted Assets ​ ​ ​ ​ Consolidated ​ 718,855 10.0 ​ N/A N/A ​ 504,190 7.0 ​ Bank ​ 721,227 10.0 ​ 467,809 6.5 ​ 503,794 7.0 ​ Tier 1 Capital to Average Assets ​ ​ ​ ​ Consolidated ​ 727,723 10.0 ​ N/A N/A ​ 292,517 4.0 ​ Bank ​ $ 721,227 9.9 % $ 365,675 5.0 % $ 292,540 4.0 % (1) Represents the minimum capital required for capital adequacy under Basel III. Includes capital conservation buffer of 2.5% .

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2024
Stockholders' Equity
Schedule of computation of basic and diluted earnings per share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ 2024 2023 ​ ​ ​ (Dollars in thousands, except per share data) ​ Earnings per Common Share ​ ​ ​ ​ Net Income ​ $ 18,223 ​ $ 16,108 ​ Less: preferred stock dividends ​ ​ 155 ​ ​ — ​ Net income available to common stockholders ​ ​ 18,068 ​ ​ 16,108 ​ Weighted average common shares ​ 49,510,808 ​ 48,635,910 ​ Earnings per common share ​ $ 0.36 ​ $ 0.33 ​ Diluted Earnings per Common Share ​ ​ ​ Net Income ​ $ 18,223 ​ $ 16,108 ​ Less: preferred stock dividends ​ ​ 155 ​ ​ — ​ Net income available to common stockholders ​ ​ 18,068 ​ ​ 16,108 ​ Weighted average common shares ​ 49,510,808 ​ 48,635,910 ​ Effect of dilutive shares ​ 456,830 ​ 407,711 ​ Weighted average dilutive common shares ​ 49,967,638 ​ 49,043,621 ​ Diluted earnings per common share ​ $ 0.36 ​ $ 0.33 ​ Stock-based awards not included because to do so would be antidilutive ​ 281,666 ​ 916,080 ​

Disclosure about Fair Value o_2

Disclosure about Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2024
Disclosure about Fair Value of Financial Instruments
Schedule of assets and liabilities measured at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Fair Value Description Valuation Hierarchy Level Where Fair Value Balance Can Be Found Available-for-Sale Securities Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independently sourced market parameters, including, but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. ​ Level 2 ​ Note 2: Securities Derivatives Fair value of the interest rate swaps is obtained from independent pricing services based on quoted market prices for similar derivative contracts. ​ Level 2 ​ Note 6: Derivatives and
Schedule of fair value measurement of assets measured at fair value on a nonrecurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ ​ ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ Fair Value (Level 1) (Level 2) (Level 3) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans ​ $ 2,288 ​ $ — ​ $ — ​ $ 2,288 Foreclosed assets held-for-sale ​ ​ 5,374 ​ ​ — ​ ​ — ​ ​ 5,374 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ Fair Value Measurements Using ​ ​ ​ ​ ​ Quoted Prices in ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Active Markets for ​ Significant Other ​ Unobservable ​ ​ ​ ​ ​ Identical Assets ​ Observable Inputs ​ Inputs ​ Fair Value (Level 1) (Level 2) (Level 3) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans $ 10,570 ​ $ — ​ $ — ​ $ 10,570 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of quantitative information about unobservable inputs used in nonrecurring Level 3 fair value measurements	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ ​ ​ ​ ​ ​ Unobservable ​ Range ​ Fair Value Valuation Techniques Inputs (Weighted Average) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans ​ $ 2,288 Appraisal of collateral Appraisal adjustments (1) 0% - 25% Foreclosed assets held-for-sale ​ $ 5,374 Appraisal of held property Appraisal adjustments (1) 10% - 10% ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ ​ ​ ​ ​ ​ Unobservable ​ Range ​ Fair Value Valuation Techniques Inputs (Weighted Average) ​ ​ (Dollars in thousands) Collateral-dependent impaired loans $ 10,570 Appraisal of collateral Appraisal adjustments (1) 0% - 56% (1) Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.
Schedule of estimated fair values of the financial instruments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 ​ ​ Carrying ​ Fair Value Measurements ​ Amount Level 1 Level 2 Level 3 ​ ​ (Dollars in thousands) Financial Assets ​ ​ ​ ​ Cash and cash equivalents ​ $ 206,773 ​ $ 206,773 ​ $ — ​ $ — Available-for-sale securities ​ 786,603 ​ — ​ 786,603 ​ — Loans, net of allowance for credit losses ​ 6,174,331 ​ — ​ — ​ 6,139,784 Restricted equity securities ​ 3,752 ​ — ​ — ​ 3,752 Interest receivable ​ 37,833 ​ — ​ 37,833 ​ — Equity securities ​ 6,917 ​ — ​ — ​ 6,917 Derivative assets ​ 9,054 ​ — ​ 9,054 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ Deposits ​ $ 6,587,146 ​ $ 954,240 ​ $ — ​ $ 5,663,040 Federal Home Loan Bank advances ​ 77,840 ​ — ​ 71,735 ​ — Other borrowings ​ 8,911 ​ — ​ 9,885 ​ — Interest payable ​ 19,921 ​ — ​ 19,921 ​ — Derivative liabilities ​ 17,138 ​ — ​ 17,138 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2023 ​ ​ Carrying ​ Fair Value Measurements ​ Amount Level 1 Level 2 Level 3 ​ ​ (Dollars in thousands) Financial Assets ​ ​ ​ ​ Cash and cash equivalents ​ $ 255,229 ​ $ 255,229 ​ $ — ​ $ — Available-for-sale securities ​ 766,653 ​ — ​ 766,653 ​ — Loans, net of allowance for credit losses ​ 6,054,228 ​ — ​ — ​ 6,036,887 Restricted equity securities ​ 3,950 ​ — ​ — ​ 3,950 Interest receivable ​ 37,294 ​ — ​ 37,294 ​ — Equity securities ​ 5,794 ​ — ​ — ​ 5,794 Derivative assets ​ 7,581 ​ — ​ 7,581 ​ — ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial Liabilities ​ ​ ​ ​ Deposits ​ $ 6,491,276 ​ $ 990,458 ​ $ — ​ $ 5,547,203 Federal Home Loan Bank advances ​ 77,889 ​ — ​ 72,123 ​ — Other borrowings ​ 8,950 ​ — ​ 9,891 ​ — Interest payable ​ 18,529 ​ — ​ 18,529 ​ — Derivative liabilities ​ 13,594 ​ — ​ 13,594 ​ — ​

Commitments and Credit Risk (Ta

Commitments and Credit Risk (Tables)	3 Months Ended
	Mar. 31, 2024
Commitments and Credit Risk
Schedule of commitments	​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2024 December 31, 2023 ​ ​ (Dollars in thousands) Commitments to originate loans ​ $ 97,741 ​ $ 59,728 Standby letters of credit ​ 75,672 ​ 74,139 Lines of credit ​ 1,897,172 ​ 2,008,356 Commitment related to investment fund ​ 3,026 ​ 4,206 Total ​ $ 2,073,611 ​ $ 2,146,429 ​

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) item $ / shares	Dec. 31, 2023 USD ($) $ / shares
Subsidiary, Sale of Stock [Line Items]
Number of wholly owned subsidiaries | item	3
Related party loans	$ 10	$ 12
Related party deposits	$ 105	$ 106
Preferred stock par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Noncumulative Preferred Stock | Related Party
Subsidiary, Sale of Stock [Line Items]
Value of shares owned by related party	$ 6

Nature of Operations and Summ_4

Nature of Operations and Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details)	Mar. 31, 2024
ASU 2023-07
Recent Accounting Pronouncements
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	false
ASU 2023-09
Recent Accounting Pronouncements
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	false

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Debt and Equity Securities, FV-NI [Line Items]
Accrued interest	$ 6	$ 7
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable	Interest Receivable
Private Equity Funds
Debt and Equity Securities, FV-NI [Line Items]
Equity securities	$ 6.9
Collateralized Debt Obligations | Asset Pledged as Collateral
Debt and Equity Securities, FV-NI [Line Items]
Securities pledged as collateral	$ 46	$ 40

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale debt securities
Amortized Cost	$ 860,209	$ 829,387
Gross Unrealized Gains	1,245	2,428
Gross Unrealized Losses	74,851	65,162
Approximate Fair Value	786,603	766,653
Federal agency obligations
Available-for-sale debt securities
Amortized Cost	9,989	9,988
Gross Unrealized Gains	42	84
Approximate Fair Value	10,031	10,072
U.S. Treasury securities
Available-for-sale debt securities
Amortized Cost		4,965
Gross Unrealized Gains		3
Approximate Fair Value		4,968
Mortgage-backed - GSE residential
Available-for-sale debt securities
Amortized Cost	251,994	233,203
Gross Unrealized Gains	280	629
Gross Unrealized Losses	23,614	21,370
Approximate Fair Value	228,660	212,462
Collateralized mortgage obligations - GSE residential
Available-for-sale debt securities
Amortized Cost	71,105	50,125
Gross Unrealized Gains	301	493
Gross Unrealized Losses	1,138	674
Approximate Fair Value	70,268	49,944
State and political subdivisions
Available-for-sale debt securities
Amortized Cost	394,166	396,349
Gross Unrealized Gains	297	497
Gross Unrealized Losses	46,680	40,949
Approximate Fair Value	347,783	355,897
Small Business Administration loan pools
Available-for-sale debt securities
Amortized Cost	123,224	125,017
Gross Unrealized Gains	325	722
Gross Unrealized Losses	2,256	961
Approximate Fair Value	121,293	124,778
Corporate bonds
Available-for-sale debt securities
Amortized Cost	9,731	9,740
Gross Unrealized Losses	1,163	1,208
Approximate Fair Value	$ 8,568	$ 8,532

Securities - Available-for-sale

Securities - Available-for-sale, Net Realized Gain (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Securities
Gross Realized Gains	$ 2	$ 193
Gross Realized Losses		(130)
Net Realized Gain	$ 2	$ 63

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Less than 12 Months
Fair Value	$ 221,989	$ 149,187
Unrealized Losses	$ 3,491	$ 1,357
Number of Securities | security	55	40
12 Months or More
Fair Value	$ 449,645	$ 441,846
Unrealized Losses	$ 71,360	$ 63,805
Number of Securities | security	280	268
Total
Fair Value	$ 671,634	$ 591,033
Unrealized Losses	$ 74,851	$ 65,162
Number of Securities | security	335	308
Mortgage-backed - GSE residential
Less than 12 Months
Fair Value	$ 35,935	$ 21,523
Unrealized Losses	$ 345	$ 56
Number of Securities | security	12	5
12 Months or More
Fair Value	$ 132,348	$ 137,626
Unrealized Losses	$ 23,269	$ 21,314
Number of Securities | security	51	52
Total
Fair Value	$ 168,283	$ 159,149
Unrealized Losses	$ 23,614	$ 21,370
Number of Securities | security	63	57
Collateralized mortgage obligations - GSE residential
Less than 12 Months
Fair Value	$ 47,106	$ 17,707
Unrealized Losses	$ 610	$ 135
Number of Securities | security	9	4
12 Months or More
Fair Value	$ 7,863	$ 8,469
Unrealized Losses	$ 528	$ 539
Number of Securities | security	17	17
Total
Fair Value	$ 54,969	$ 26,176
Unrealized Losses	$ 1,138	$ 674
Number of Securities | security	26	21
State and political subdivisions
Less than 12 Months
Fair Value	$ 28,063	$ 33,577
Unrealized Losses	$ 282	$ 207
Number of Securities | security	20	20
12 Months or More
Fair Value	$ 300,783	$ 287,128
Unrealized Losses	$ 46,398	$ 40,742
Number of Securities | security	203	190
Total
Fair Value	$ 328,846	$ 320,705
Unrealized Losses	$ 46,680	$ 40,949
Number of Securities | security	223	210
Small Business Administration loan pools
Less than 12 Months
Fair Value	$ 110,885	$ 76,380
Unrealized Losses	$ 2,254	$ 959
Number of Securities | security	14	11
12 Months or More
Fair Value	$ 83	$ 91
Unrealized Losses	$ 2	$ 2
Number of Securities | security	4	4
Total
Fair Value	$ 110,968	$ 76,471
Unrealized Losses	$ 2,256	$ 961
Number of Securities | security	18	15
Corporate bonds
12 Months or More
Fair Value	$ 8,568	$ 8,532
Unrealized Losses	$ 1,163	$ 1,208
Number of Securities | security	5	5
Total
Fair Value	$ 8,568	$ 8,532
Unrealized Losses	$ 1,163	$ 1,208
Number of Securities | security	5	5

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value by Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized cost
Within one year	$ 519
After one to five years	6,036
After five to ten years	67,862
After ten years	785,792
Amortized Cost	860,209	$ 829,387
Estimated fair value
Within one year	527
After one to five years	5,908
After five to ten years	65,750
After ten years	714,418
Total	$ 786,603	766,653
Weighted average yield
Within one year	4.41%
After one to five years	3.74%
After five to ten years	3.21%
After ten years	3.47%
Total	3.46%
Federal agency obligations
Amortized cost
After ten years	$ 9,989
Amortized Cost	9,989	9,988
Estimated fair value
After ten years	10,031
Total	$ 10,031	10,072
Weighted average yield
After ten years	6.38%
Total	6.38%
Mortgage-backed - GSE residential
Amortized cost
After five to ten years	$ 852
After ten years	251,142
Amortized Cost	251,994	233,203
Estimated fair value
After five to ten years	778
After ten years	227,882
Total	$ 228,660	212,462
Weighted average yield
After five to ten years	2.24%
After ten years	3.39%
Total	3.39%
Collateralized mortgage obligations - GSE residential
Amortized cost
After one to five years	$ 2,190
After ten years	68,915
Amortized Cost	71,105	50,125
Estimated fair value
After one to five years	2,093
After ten years	68,175
Total	$ 70,268	49,944
Weighted average yield
After one to five years	2.78%
After ten years	5.44%
Total	5.36%
State and political subdivisions
Amortized cost
Within one year	$ 519
After one to five years	3,597
After five to ten years	57,443
After ten years	332,607
Amortized Cost	394,166	396,349
Estimated fair value
Within one year	527
After one to five years	3,576
After five to ten years	56,560
After ten years	287,120
Total	$ 347,783	355,897
Weighted average yield
Within one year	4.41%
After one to five years	4.27%
After five to ten years	2.81%
After ten years	2.52%
Total	2.58%
Small Business Administration loan pools
Amortized cost
After one to five years	$ 10
After five to ten years	75
After ten years	123,139
Amortized Cost	123,224	125,017
Estimated fair value
After one to five years	10
After five to ten years	73
After ten years	121,210
Total	$ 121,293	124,778
Weighted average yield
After one to five years	4.96%
After five to ten years	4.07%
After ten years	4.86%
Total	4.86%
Corporate bonds
Amortized cost
After one to five years	$ 239
After five to ten years	9,492
Amortized Cost	9,731	9,740
Estimated fair value
After one to five years	229
After five to ten years	8,339
Total	$ 8,568	$ 8,532
Weighted average yield
After one to five years	4.59%
After five to ten years	5.71%
Total	5.69%

Securities - Equity Securities

Securities - Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Securities
Net gains recognized during the reporting period on equity securities	$ 21	$ 10
Less: net gains recognized during the period on equity securities sold during the period	18
Unrealized gain recognized during the reporting period on equity securities still held at the reporting date	$ 3	$ 10

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) loan item	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Carrying value of loans	$ 24,000		$ 24,000	$ 25,000
Accrued Interest	$ 31,000		$ 31,000	$ 30,000
Financial Asset, Amortized Cost, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Interest Receivable		Interest Receivable	Interest Receivable
Interest income recognized on nonaccrual loans	$ 0	$ 0
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	1,400
Net charge offs	1,500
Decrease in reserve on unfunded commitments	$ 1,200
Loans were restructured TDR guidance | loan	6		12
Number of contract | item	0
Outstanding Balance	$ 15,300		$ 15,300
Allowance for credit losses on off-balance sheet exposures	5,213		$ 5,213	$ 6,413
Credit Quality Metrics Including Improved Risk Ratings [Member]
Drivers of Quarterly Change in the ACL
ACL increase (decrease)	$ 2,900

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Category of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 6,249,187	$ 6,127,690
Allowance for credit losses on loans	(74,856)	(73,462)
Loans, net of the allowance for credit losses on loans	$ 6,174,331	$ 6,054,228
Percentage Of Loans	100%	100%
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 2,179,562	$ 2,160,212
Allowance for credit losses on loans	$ (33,821)	$ (32,244)
Percentage Of Loans	35%	35%
Energy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 221,217	$ 214,218
Allowance for credit losses on loans	$ (3,169)	$ (3,143)
Percentage Of Loans	4%	3%
Commercial real estate - owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 577,812	$ 566,253
Allowance for credit losses on loans	$ (6,385)	$ (6,445)
Percentage Of Loans	9%	9%
Commercial real estate - non-owner-occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 2,769,936	$ 2,685,534
Allowance for credit losses on loans	$ (27,989)	$ (28,130)
Percentage Of Loans	44%	44%
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 468,628	$ 464,095
Allowance for credit losses on loans	$ (3,466)	$ (3,456)
Percentage Of Loans	7%	8%
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned fees	$ 32,032	$ 37,378
Allowance for credit losses on loans	$ (26)	$ (44)
Percentage Of Loans	1%	1%

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Company's Loan Portfolio Internal Rating Categories Loan Segments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 268,616	$ 1,005,445
Fiscal Year Before Latest Fiscal Year	896,432	1,322,974
Two Years Before Latest Fiscal Year	1,355,502	678,928
Three Years Before Latest Fiscal Year	633,025	404,847
Four Years Before Latest Fiscal Year	378,516	212,136
Five Or More Years Before Latest Fiscal Year	363,366	173,803
Revolving Loans	2,096,593	2,071,645
Revolving Loans Converted to Term Loans	257,137	257,912
Total Loans Receivable	6,249,187	6,127,690
Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213	746
Two Years Before Latest Fiscal Year	858	6,499
Three Years Before Latest Fiscal Year	264	1,722
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	8,298	9,127
Revolving Loans Converted to Term Loans	305	357
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	251,907	966,682
Fiscal Year Before Latest Fiscal Year	867,097	1,292,876
Two Years Before Latest Fiscal Year	1,321,175	638,243
Three Years Before Latest Fiscal Year	601,946	389,881
Four Years Before Latest Fiscal Year	371,113	191,104
Five Or More Years Before Latest Fiscal Year	335,382	164,112
Revolving Loans	2,030,346	2,023,942
Revolving Loans Converted to Term Loans	236,050	235,006
Total Loans Receivable	6,015,016	5,901,846
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	11,224	12,537
Fiscal Year Before Latest Fiscal Year	1,676	27,475
Two Years Before Latest Fiscal Year	26,127	25,372
Three Years Before Latest Fiscal Year	20,941	4,597
Four Years Before Latest Fiscal Year	1,921	19,461
Five Or More Years Before Latest Fiscal Year	22,122	6,531
Revolving Loans	24,074	9,748
Revolving Loans Converted to Term Loans	650	3,751
Total Loans Receivable	108,735	109,472
Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	5,485	26,226
Fiscal Year Before Latest Fiscal Year	25,446	1,877
Two Years Before Latest Fiscal Year	7,342	8,814
Three Years Before Latest Fiscal Year	9,874	8,647
Four Years Before Latest Fiscal Year	5,482	1,571
Five Or More Years Before Latest Fiscal Year	5,718	3,160
Revolving Loans	33,875	28,828
Revolving Loans Converted to Term Loans	20,132	18,798
Total Loans Receivable	113,354	97,921
Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213	746
Two Years Before Latest Fiscal Year	858	6,499
Three Years Before Latest Fiscal Year	264	1,722
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	6,105	6,848
Revolving Loans Converted to Term Loans	305	357
Total Loans Receivable	9,889	16,172
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	2,193	2,279
Total Loans Receivable	2,193	2,279
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	166,420	394,457
Fiscal Year Before Latest Fiscal Year	317,819	260,984
Two Years Before Latest Fiscal Year	256,230	204,669
Three Years Before Latest Fiscal Year	166,954	57,837
Four Years Before Latest Fiscal Year	39,598	40,820
Five Or More Years Before Latest Fiscal Year	48,304	19,642
Revolving Loans	1,107,991	1,108,604
Revolving Loans Converted to Term Loans	76,246	73,199
Total Loans Receivable	2,179,562	2,160,212
Commercial and industrial | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213
Two Years Before Latest Fiscal Year		266
Three Years Before Latest Fiscal Year	264	24
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	8,100	8,839
Revolving Loans Converted to Term Loans	129	178
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	162,797	379,360
Fiscal Year Before Latest Fiscal Year	301,628	258,182
Two Years Before Latest Fiscal Year	253,530	193,302
Three Years Before Latest Fiscal Year	158,058	54,901
Four Years Before Latest Fiscal Year	39,382	38,762
Five Or More Years Before Latest Fiscal Year	45,697	18,801
Revolving Loans	1,042,118	1,061,365
Revolving Loans Converted to Term Loans	57,434	53,015
Total Loans Receivable	2,060,644	2,057,688
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,627	2,442
Fiscal Year Before Latest Fiscal Year	1,128	925
Two Years Before Latest Fiscal Year	852	6,000
Three Years Before Latest Fiscal Year	1,966	2,674
Four Years Before Latest Fiscal Year	12	1,460
Five Or More Years Before Latest Fiscal Year	43	26
Revolving Loans	24,074	9,748
Revolving Loans Converted to Term Loans	79	3,175
Total Loans Receivable	29,781	26,450
Commercial and industrial | Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,996	12,655
Fiscal Year Before Latest Fiscal Year	12,850	1,877
Two Years Before Latest Fiscal Year	1,848	5,101
Three Years Before Latest Fiscal Year	6,666	238
Four Years Before Latest Fiscal Year	204	598
Five Or More Years Before Latest Fiscal Year	2,420	815
Revolving Loans	33,699	28,652
Revolving Loans Converted to Term Loans	18,604	16,831
Total Loans Receivable	78,287	66,767
Commercial and industrial | Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213
Two Years Before Latest Fiscal Year		266
Three Years Before Latest Fiscal Year	264	24
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	6,105	6,848
Revolving Loans Converted to Term Loans	129	178
Total Loans Receivable	8,855	7,316
Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	1,995	1,991
Total Loans Receivable	1,995	1,991
Energy
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		4,581
Fiscal Year Before Latest Fiscal Year	4,583	6,868
Two Years Before Latest Fiscal Year	6,345
Three Years Before Latest Fiscal Year		156
Revolving Loans	208,345	202,506
Revolving Loans Converted to Term Loans	1,944	107
Total Loans Receivable	221,217	214,218
Energy | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	198	288
Energy | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		4,581
Fiscal Year Before Latest Fiscal Year	4,583	6,868
Two Years Before Latest Fiscal Year	6,345
Three Years Before Latest Fiscal Year		156
Revolving Loans	208,147	202,218
Revolving Loans Converted to Term Loans	1,944	107
Total Loans Receivable	221,019	213,930
Energy | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans	198	288
Total Loans Receivable	198	288
Commercial real estate - owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	15,877	69,308
Fiscal Year Before Latest Fiscal Year	59,436	98,946
Two Years Before Latest Fiscal Year	111,076	128,410
Three Years Before Latest Fiscal Year	126,478	65,454
Four Years Before Latest Fiscal Year	66,435	51,555
Five Or More Years Before Latest Fiscal Year	86,421	37,431
Revolving Loans	76,967	76,782
Revolving Loans Converted to Term Loans	35,122	38,367
Total Loans Receivable	577,812	566,253
Commercial real estate - owner-occupied | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Two Years Before Latest Fiscal Year	336	204
Commercial real estate - owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	6,280	56,236
Fiscal Year Before Latest Fiscal Year	55,911	92,148
Two Years Before Latest Fiscal Year	103,985	119,684
Three Years Before Latest Fiscal Year	116,685	62,072
Four Years Before Latest Fiscal Year	63,069	49,992
Five Or More Years Before Latest Fiscal Year	80,507	32,936
Revolving Loans	76,967	76,782
Revolving Loans Converted to Term Loans	33,023	36,263
Total Loans Receivable	536,427	526,113
Commercial real estate - owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	9,597	10,095
Fiscal Year Before Latest Fiscal Year	548	6,798
Two Years Before Latest Fiscal Year	5,291	8,522
Three Years Before Latest Fiscal Year	9,793	1,747
Four Years Before Latest Fiscal Year	1,736	793
Five Or More Years Before Latest Fiscal Year	3,114	2,448
Revolving Loans Converted to Term Loans	571	576
Total Loans Receivable	30,650	30,979
Commercial real estate - owner-occupied | Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		2,977
Fiscal Year Before Latest Fiscal Year	2,977
Two Years Before Latest Fiscal Year	1,464
Three Years Before Latest Fiscal Year		1,635
Four Years Before Latest Fiscal Year	1,630	770
Five Or More Years Before Latest Fiscal Year	2,800	2,047
Revolving Loans Converted to Term Loans	1,528	1,528
Total Loans Receivable	10,399	8,957
Commercial real estate - owner-occupied | Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Two Years Before Latest Fiscal Year	336	204
Total Loans Receivable	336	204
Commercial real estate - non-owner-occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	82,853	487,579
Fiscal Year Before Latest Fiscal Year	454,134	862,407
Two Years Before Latest Fiscal Year	885,660	258,161
Three Years Before Latest Fiscal Year	255,603	167,169
Four Years Before Latest Fiscal Year	162,819	82,748
Five Or More Years Before Latest Fiscal Year	133,360	54,412
Revolving Loans	651,858	626,998
Revolving Loans Converted to Term Loans	143,649	146,060
Total Loans Receivable	2,769,936	2,685,534
Commercial real estate - non-owner-occupied | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		713
Two Years Before Latest Fiscal Year	522	6,029
Three Years Before Latest Fiscal Year		1,698
Commercial real estate - non-owner-occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	79,617	477,238
Fiscal Year Before Latest Fiscal Year	444,515	842,755
Two Years Before Latest Fiscal Year	862,200	242,405
Three Years Before Latest Fiscal Year	246,477	161,845
Four Years Before Latest Fiscal Year	159,192	65,540
Five Or More Years Before Latest Fiscal Year	114,102	50,062
Revolving Loans	651,858	626,998
Revolving Loans Converted to Term Loans	143,649	145,621
Total Loans Receivable	2,701,610	2,612,464
Commercial real estate - non-owner-occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		18,939
Two Years Before Latest Fiscal Year	18,908	7,331
Three Years Before Latest Fiscal Year	7,228
Four Years Before Latest Fiscal Year		17,208
Five Or More Years Before Latest Fiscal Year	18,960	4,052
Total Loans Receivable	45,096	47,530
Commercial real estate - non-owner-occupied | Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	3,236	10,341
Fiscal Year Before Latest Fiscal Year	9,619
Two Years Before Latest Fiscal Year	4,030	2,396
Three Years Before Latest Fiscal Year	1,898	3,626
Four Years Before Latest Fiscal Year	3,627
Five Or More Years Before Latest Fiscal Year	298	298
Revolving Loans Converted to Term Loans		439
Total Loans Receivable	22,708	17,100
Commercial real estate - non-owner-occupied | Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		713
Two Years Before Latest Fiscal Year	522	6,029
Three Years Before Latest Fiscal Year		1,698
Total Loans Receivable	522	8,440
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	2,177	37,929
Fiscal Year Before Latest Fiscal Year	49,465	87,732
Two Years Before Latest Fiscal Year	91,810	87,226
Three Years Before Latest Fiscal Year	83,578	114,154
Four Years Before Latest Fiscal Year	109,598	36,792
Five Or More Years Before Latest Fiscal Year	95,030	62,288
Revolving Loans	36,794	37,795
Revolving Loans Converted to Term Loans	176	179
Total Loans Receivable	468,628	464,095
Residential real estate | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans Converted to Term Loans	176	179
Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,924	37,676
Fiscal Year Before Latest Fiscal Year	49,465	86,919
Two Years Before Latest Fiscal Year	90,734	82,390
Three Years Before Latest Fiscal Year	80,314	110,853
Four Years Before Latest Fiscal Year	109,425	36,589
Five Or More Years Before Latest Fiscal Year	94,830	62,288
Revolving Loans	36,618	37,619
Total Loans Receivable	463,310	454,334
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		813
Two Years Before Latest Fiscal Year	1,076	3,519
Three Years Before Latest Fiscal Year	1,954	176
Four Years Before Latest Fiscal Year	173
Total Loans Receivable	3,203	4,508
Residential real estate | Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	253	253
Two Years Before Latest Fiscal Year		1,317
Three Years Before Latest Fiscal Year	1,310	3,125
Four Years Before Latest Fiscal Year		203
Five Or More Years Before Latest Fiscal Year	200
Revolving Loans	176	176
Total Loans Receivable	1,939	5,074
Residential real estate | Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans Converted to Term Loans	176	179
Total Loans Receivable	176	179
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,289	11,591
Fiscal Year Before Latest Fiscal Year	10,995	6,037
Two Years Before Latest Fiscal Year	4,381	462
Three Years Before Latest Fiscal Year	412	77
Four Years Before Latest Fiscal Year	66	221
Five Or More Years Before Latest Fiscal Year	251	30
Revolving Loans	14,638	18,960
Total Loans Receivable	32,032	37,378
Consumer | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		33
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,289	11,591
Fiscal Year Before Latest Fiscal Year	10,995	6,004
Two Years Before Latest Fiscal Year	4,381	462
Three Years Before Latest Fiscal Year	412	54
Four Years Before Latest Fiscal Year	45	221
Five Or More Years Before Latest Fiscal Year	246	25
Revolving Loans	14,638	18,960
Total Loans Receivable	32,006	37,317
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Five Or More Years Before Latest Fiscal Year	5	5
Total Loans Receivable	5	5
Consumer | Substandard | Accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Three Years Before Latest Fiscal Year		23
Four Years Before Latest Fiscal Year	21
Total Loans Receivable	$ 21	23
Consumer | Substandard | Non-accrual
Financing Receivable, Credit Quality Indicator [Line Items]
Fiscal Year Before Latest Fiscal Year		33
Total Loans Receivable		$ 33

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Loan Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	$ 268,616	$ 1,005,445
Fiscal Year Before Latest Fiscal Year	896,432	1,322,974
Two Years Before Latest Fiscal Year	1,355,502	678,928
Three Years Before Latest Fiscal Year	633,025	404,847
Four Years Before Latest Fiscal Year	378,516	212,136
Five Or More Years Before Latest Fiscal Year	363,366	173,803
Revolving Loans	2,096,593	2,071,645
Revolving Loans Converted to Term Loans	257,137	257,912
Total Loans Receivable	6,249,187	6,127,690
30-59 days
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		250
Fiscal Year Before Latest Fiscal Year	24,388	403
Two Years Before Latest Fiscal Year	5,213	40
Three Years Before Latest Fiscal Year	559	589
Four Years Before Latest Fiscal Year	136
Five Or More Years Before Latest Fiscal Year	415	207
Revolving Loans	10,413	388
Revolving Loans Converted to Term Loans	1,528	151
Total Loans Receivable	42,652	2,028
60-89 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	635
Two Years Before Latest Fiscal Year	35
Three Years Before Latest Fiscal Year	16
Four Years Before Latest Fiscal Year	816
Five Or More Years Before Latest Fiscal Year	73
Revolving Loans	2,154
Total Loans Receivable	3,729
Greater than 90 days
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		30
Fiscal Year Before Latest Fiscal Year	280	776
Two Years Before Latest Fiscal Year	522	7,897
Three Years Before Latest Fiscal Year	1,641	1,722
Four Years Before Latest Fiscal Year	416	199
Five Or More Years Before Latest Fiscal Year	373	307
Revolving Loans	8,922	11,264
Revolving Loans Converted to Term Loans		2,376
Total Loans Receivable	12,154	24,571
Total past due
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		280
Fiscal Year Before Latest Fiscal Year	25,303	1,179
Two Years Before Latest Fiscal Year	5,770	7,937
Three Years Before Latest Fiscal Year	2,216	2,311
Four Years Before Latest Fiscal Year	1,368	199
Five Or More Years Before Latest Fiscal Year	861	514
Revolving Loans	21,489	11,652
Revolving Loans Converted to Term Loans	1,528	2,527
Total Loans Receivable	58,535	26,599
Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	268,616	1,005,165
Fiscal Year Before Latest Fiscal Year	871,129	1,321,795
Two Years Before Latest Fiscal Year	1,349,732	670,991
Three Years Before Latest Fiscal Year	630,809	402,536
Four Years Before Latest Fiscal Year	377,148	211,937
Five Or More Years Before Latest Fiscal Year	362,505	173,289
Revolving Loans	2,075,104	2,059,993
Revolving Loans Converted to Term Loans	255,609	255,385
Total Loans Receivable	6,190,652	6,101,091
Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		30
Fiscal Year Before Latest Fiscal Year	280	30
Two Years Before Latest Fiscal Year		1,398
Three Years Before Latest Fiscal Year	1,377
Four Years Before Latest Fiscal Year	416	199
Five Or More Years Before Latest Fiscal Year	229	307
Revolving Loans	623	2,176
Revolving Loans Converted to Term Loans		2,199
Total Loans Receivable	2,925	6,339
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	166,420	394,457
Fiscal Year Before Latest Fiscal Year	317,819	260,984
Two Years Before Latest Fiscal Year	256,230	204,669
Three Years Before Latest Fiscal Year	166,954	57,837
Four Years Before Latest Fiscal Year	39,598	40,820
Five Or More Years Before Latest Fiscal Year	48,304	19,642
Revolving Loans	1,107,991	1,108,604
Revolving Loans Converted to Term Loans	76,246	73,199
Total Loans Receivable	2,179,562	2,160,212
Commercial and industrial | 30-59 days
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		250
Fiscal Year Before Latest Fiscal Year	2,558	178
Two Years Before Latest Fiscal Year	150
Three Years Before Latest Fiscal Year	448	81
Five Or More Years Before Latest Fiscal Year	274	136
Revolving Loans	4,672	158
Revolving Loans Converted to Term Loans		151
Total Loans Receivable	8,102	954
Commercial and industrial | 60-89 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	62
Two Years Before Latest Fiscal Year	18
Revolving Loans	2,154
Total Loans Receivable	2,234
Commercial and industrial | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		30
Fiscal Year Before Latest Fiscal Year	280	28
Two Years Before Latest Fiscal Year		347
Three Years Before Latest Fiscal Year	331	24
Four Years Before Latest Fiscal Year		199
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	8,548	10,800
Revolving Loans Converted to Term Loans		2,376
Total Loans Receivable	9,303	13,804
Commercial and industrial | Total past due
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		280
Fiscal Year Before Latest Fiscal Year	2,900	206
Two Years Before Latest Fiscal Year	168	347
Three Years Before Latest Fiscal Year	779	105
Four Years Before Latest Fiscal Year		199
Five Or More Years Before Latest Fiscal Year	418	136
Revolving Loans	15,374	10,958
Revolving Loans Converted to Term Loans		2,527
Total Loans Receivable	19,639	14,758
Commercial and industrial | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	166,420	394,177
Fiscal Year Before Latest Fiscal Year	314,919	260,778
Two Years Before Latest Fiscal Year	256,062	204,322
Three Years Before Latest Fiscal Year	166,175	57,732
Four Years Before Latest Fiscal Year	39,598	40,621
Five Or More Years Before Latest Fiscal Year	47,886	19,506
Revolving Loans	1,092,617	1,097,646
Revolving Loans Converted to Term Loans	76,246	70,672
Total Loans Receivable	2,159,923	2,145,454
Commercial and industrial | Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		30
Fiscal Year Before Latest Fiscal Year	280	28
Two Years Before Latest Fiscal Year		81
Three Years Before Latest Fiscal Year	67
Four Years Before Latest Fiscal Year		199
Revolving Loans	447	2,000
Revolving Loans Converted to Term Loans		2,199
Total Loans Receivable	794	4,537
Energy
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		4,581
Fiscal Year Before Latest Fiscal Year	4,583	6,868
Two Years Before Latest Fiscal Year	6,345
Three Years Before Latest Fiscal Year		156
Revolving Loans	208,345	202,506
Revolving Loans Converted to Term Loans	1,944	107
Total Loans Receivable	221,217	214,218
Energy | 30-59 days
Financing Receivable, Past Due [Line Items]
Revolving Loans		30
Total Loans Receivable		30
Energy | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Revolving Loans	198	288
Total Loans Receivable	198	288
Energy | Total past due
Financing Receivable, Past Due [Line Items]
Revolving Loans	198	318
Total Loans Receivable	198	318
Energy | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year		4,581
Fiscal Year Before Latest Fiscal Year	4,583	6,868
Two Years Before Latest Fiscal Year	6,345
Three Years Before Latest Fiscal Year		156
Revolving Loans	208,147	202,188
Revolving Loans Converted to Term Loans	1,944	107
Total Loans Receivable	221,019	213,900
Commercial real estate - owner-occupied
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	15,877	69,308
Fiscal Year Before Latest Fiscal Year	59,436	98,946
Two Years Before Latest Fiscal Year	111,076	128,410
Three Years Before Latest Fiscal Year	126,478	65,454
Four Years Before Latest Fiscal Year	66,435	51,555
Five Or More Years Before Latest Fiscal Year	86,421	37,431
Revolving Loans	76,967	76,782
Revolving Loans Converted to Term Loans	35,122	38,367
Total Loans Receivable	577,812	566,253
Commercial real estate - owner-occupied | 30-59 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	2,977
Two Years Before Latest Fiscal Year	336
Three Years Before Latest Fiscal Year		371
Five Or More Years Before Latest Fiscal Year		71
Revolving Loans Converted to Term Loans	1,528
Total Loans Receivable	4,841	442
Commercial real estate - owner-occupied | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Two Years Before Latest Fiscal Year		204
Four Years Before Latest Fiscal Year	416
Five Or More Years Before Latest Fiscal Year	229
Total Loans Receivable	645	204
Commercial real estate - owner-occupied | Total past due
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	2,977
Two Years Before Latest Fiscal Year	336	204
Three Years Before Latest Fiscal Year		371
Four Years Before Latest Fiscal Year	416
Five Or More Years Before Latest Fiscal Year	229	71
Revolving Loans Converted to Term Loans	1,528
Total Loans Receivable	5,486	646
Commercial real estate - owner-occupied | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	15,877	69,308
Fiscal Year Before Latest Fiscal Year	56,459	98,946
Two Years Before Latest Fiscal Year	110,740	128,206
Three Years Before Latest Fiscal Year	126,478	65,083
Four Years Before Latest Fiscal Year	66,019	51,555
Five Or More Years Before Latest Fiscal Year	86,192	37,360
Revolving Loans	76,967	76,782
Revolving Loans Converted to Term Loans	33,594	38,367
Total Loans Receivable	572,326	565,607
Commercial real estate - owner-occupied | Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Four Years Before Latest Fiscal Year	416
Five Or More Years Before Latest Fiscal Year	229
Total Loans Receivable	645
Commercial real estate - non-owner-occupied
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	82,853	487,579
Fiscal Year Before Latest Fiscal Year	454,134	862,407
Two Years Before Latest Fiscal Year	885,660	258,161
Three Years Before Latest Fiscal Year	255,603	167,169
Four Years Before Latest Fiscal Year	162,819	82,748
Five Or More Years Before Latest Fiscal Year	133,360	54,412
Revolving Loans	651,858	626,998
Revolving Loans Converted to Term Loans	143,649	146,060
Total Loans Receivable	2,769,936	2,685,534
Commercial real estate - non-owner-occupied | 30-59 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	18,853
Two Years Before Latest Fiscal Year	4,717
Five Or More Years Before Latest Fiscal Year	141
Revolving Loans	5,606
Total Loans Receivable	29,317
Commercial real estate - non-owner-occupied | 60-89 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	573
Four Years Before Latest Fiscal Year	816
Five Or More Years Before Latest Fiscal Year	68
Total Loans Receivable	1,457
Commercial real estate - non-owner-occupied | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		713
Two Years Before Latest Fiscal Year	522	6,029
Three Years Before Latest Fiscal Year		1,698
Five Or More Years Before Latest Fiscal Year		307
Total Loans Receivable	522	8,747
Commercial real estate - non-owner-occupied | Total past due
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year	19,426	713
Two Years Before Latest Fiscal Year	5,239	6,029
Three Years Before Latest Fiscal Year		1,698
Four Years Before Latest Fiscal Year	816
Five Or More Years Before Latest Fiscal Year	209	307
Revolving Loans	5,606
Total Loans Receivable	31,296	8,747
Commercial real estate - non-owner-occupied | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	82,853	487,579
Fiscal Year Before Latest Fiscal Year	434,708	861,694
Two Years Before Latest Fiscal Year	880,421	252,132
Three Years Before Latest Fiscal Year	255,603	165,471
Four Years Before Latest Fiscal Year	162,003	82,748
Five Or More Years Before Latest Fiscal Year	133,151	54,105
Revolving Loans	646,252	626,998
Revolving Loans Converted to Term Loans	143,649	146,060
Total Loans Receivable	2,738,640	2,676,787
Commercial real estate - non-owner-occupied | Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Five Or More Years Before Latest Fiscal Year		307
Total Loans Receivable		307
Residential real estate
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	2,177	37,929
Fiscal Year Before Latest Fiscal Year	49,465	87,732
Two Years Before Latest Fiscal Year	91,810	87,226
Three Years Before Latest Fiscal Year	83,578	114,154
Four Years Before Latest Fiscal Year	109,598	36,792
Five Or More Years Before Latest Fiscal Year	95,030	62,288
Revolving Loans	36,794	37,795
Revolving Loans Converted to Term Loans	176	179
Total Loans Receivable	468,628	464,095
Residential real estate | 30-59 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		6
Two Years Before Latest Fiscal Year	6
Three Years Before Latest Fiscal Year	89	137
Four Years Before Latest Fiscal Year	136
Total Loans Receivable	231	143
Residential real estate | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Two Years Before Latest Fiscal Year		1,317
Three Years Before Latest Fiscal Year	1,310
Revolving Loans	176	176
Total Loans Receivable	1,486	1,493
Residential real estate | Total past due
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		6
Two Years Before Latest Fiscal Year	6	1,317
Three Years Before Latest Fiscal Year	1,399	137
Four Years Before Latest Fiscal Year	136
Revolving Loans	176	176
Total Loans Receivable	1,717	1,636
Residential real estate | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	2,177	37,929
Fiscal Year Before Latest Fiscal Year	49,465	87,726
Two Years Before Latest Fiscal Year	91,804	85,909
Three Years Before Latest Fiscal Year	82,179	114,017
Four Years Before Latest Fiscal Year	109,462	36,792
Five Or More Years Before Latest Fiscal Year	95,030	62,288
Revolving Loans	36,618	37,619
Revolving Loans Converted to Term Loans	176	179
Total Loans Receivable	466,911	462,459
Residential real estate | Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Two Years Before Latest Fiscal Year		1,317
Three Years Before Latest Fiscal Year	1,310
Revolving Loans	176	176
Total Loans Receivable	1,486	1,493
Consumer
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	1,289	11,591
Fiscal Year Before Latest Fiscal Year	10,995	6,037
Two Years Before Latest Fiscal Year	4,381	462
Three Years Before Latest Fiscal Year	412	77
Four Years Before Latest Fiscal Year	66	221
Five Or More Years Before Latest Fiscal Year	251	30
Revolving Loans	14,638	18,960
Total Loans Receivable	32,032	37,378
Consumer | 30-59 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		219
Two Years Before Latest Fiscal Year	4	40
Three Years Before Latest Fiscal Year	22
Revolving Loans	135	200
Total Loans Receivable	161	459
Consumer | 60-89 days
Financing Receivable, Past Due [Line Items]
Two Years Before Latest Fiscal Year	17
Three Years Before Latest Fiscal Year	16
Five Or More Years Before Latest Fiscal Year	5
Total Loans Receivable	38
Consumer | Greater than 90 days
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		35
Total Loans Receivable		35
Consumer | Total past due
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		254
Two Years Before Latest Fiscal Year	21	40
Three Years Before Latest Fiscal Year	38
Five Or More Years Before Latest Fiscal Year	5
Revolving Loans	135	200
Total Loans Receivable	199	494
Consumer | Current
Financing Receivable, Past Due [Line Items]
Current Fiscal Year	1,289	11,591
Fiscal Year Before Latest Fiscal Year	10,995	5,783
Two Years Before Latest Fiscal Year	4,360	422
Three Years Before Latest Fiscal Year	374	77
Four Years Before Latest Fiscal Year	66	221
Five Or More Years Before Latest Fiscal Year	246	30
Revolving Loans	14,503	18,760
Total Loans Receivable	$ 31,833	36,884
Consumer | Greater than 90 days and accruing
Financing Receivable, Past Due [Line Items]
Fiscal Year Before Latest Fiscal Year		2
Total Loans Receivable		$ 2

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Non-Accrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	$ 268,616	$ 1,005,445
Fiscal Year Before Latest Fiscal Year	896,432	1,322,974
Two Years Before Latest Fiscal Year	1,355,502	678,928
Three Years Before Latest Fiscal Year	633,025	404,847
Four Years Before Latest Fiscal Year	378,516	212,136
Five Or More Years Before Latest Fiscal Year	363,366	173,803
Revolving Loans	2,096,593	2,071,645
Revolving Loans Converted to Term Loans	257,137	257,912
Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213	746
Two Years Before Latest Fiscal Year	858	6,499
Three Years Before Latest Fiscal Year	264	1,722
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	8,298	9,127
Revolving Loans Converted to Term Loans	305	357
Total non-accrual loans	12,082	18,451
Nonaccrual Loans with no related Allowance	6,427	8,600
Commercial and industrial
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	166,420	394,457
Fiscal Year Before Latest Fiscal Year	317,819	260,984
Two Years Before Latest Fiscal Year	256,230	204,669
Three Years Before Latest Fiscal Year	166,954	57,837
Four Years Before Latest Fiscal Year	39,598	40,820
Five Or More Years Before Latest Fiscal Year	48,304	19,642
Revolving Loans	1,107,991	1,108,604
Revolving Loans Converted to Term Loans	76,246	73,199
Commercial and industrial | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Fiscal Year Before Latest Fiscal Year	2,213
Two Years Before Latest Fiscal Year		266
Three Years Before Latest Fiscal Year	264	24
Five Or More Years Before Latest Fiscal Year	144
Revolving Loans	8,100	8,839
Revolving Loans Converted to Term Loans	129	178
Total non-accrual loans	10,850	9,307
Nonaccrual Loans with no related Allowance	5,717	6,198
Energy
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year		4,581
Fiscal Year Before Latest Fiscal Year	4,583	6,868
Two Years Before Latest Fiscal Year	6,345
Three Years Before Latest Fiscal Year		156
Revolving Loans	208,345	202,506
Revolving Loans Converted to Term Loans	1,944	107
Energy | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Revolving Loans	198	288
Total non-accrual loans	198	288
Nonaccrual Loans with no related Allowance	198	288
Commercial real estate - owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	15,877	69,308
Fiscal Year Before Latest Fiscal Year	59,436	98,946
Two Years Before Latest Fiscal Year	111,076	128,410
Three Years Before Latest Fiscal Year	126,478	65,454
Four Years Before Latest Fiscal Year	66,435	51,555
Five Or More Years Before Latest Fiscal Year	86,421	37,431
Revolving Loans	76,967	76,782
Revolving Loans Converted to Term Loans	35,122	38,367
Commercial real estate - owner-occupied | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Two Years Before Latest Fiscal Year	336	204
Total non-accrual loans	336	204
Nonaccrual Loans with no related Allowance	336	204
Commercial real estate - non-owner-occupied
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	82,853	487,579
Fiscal Year Before Latest Fiscal Year	454,134	862,407
Two Years Before Latest Fiscal Year	885,660	258,161
Three Years Before Latest Fiscal Year	255,603	167,169
Four Years Before Latest Fiscal Year	162,819	82,748
Five Or More Years Before Latest Fiscal Year	133,360	54,412
Revolving Loans	651,858	626,998
Revolving Loans Converted to Term Loans	143,649	146,060
Commercial real estate - non-owner-occupied | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Fiscal Year Before Latest Fiscal Year		713
Two Years Before Latest Fiscal Year	522	6,029
Three Years Before Latest Fiscal Year		1,698
Total non-accrual loans	522	8,440
Nonaccrual Loans with no related Allowance		1,698
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	2,177	37,929
Fiscal Year Before Latest Fiscal Year	49,465	87,732
Two Years Before Latest Fiscal Year	91,810	87,226
Three Years Before Latest Fiscal Year	83,578	114,154
Four Years Before Latest Fiscal Year	109,598	36,792
Five Or More Years Before Latest Fiscal Year	95,030	62,288
Revolving Loans	36,794	37,795
Revolving Loans Converted to Term Loans	176	179
Residential real estate | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Revolving Loans Converted to Term Loans	176	179
Total non-accrual loans	176	179
Nonaccrual Loans with no related Allowance	176	179
Consumer
Financing Receivable, Nonaccrual [Line Items]
Current Fiscal Year	1,289	11,591
Fiscal Year Before Latest Fiscal Year	10,995	6,037
Two Years Before Latest Fiscal Year	4,381	462
Three Years Before Latest Fiscal Year	412	77
Four Years Before Latest Fiscal Year	66	221
Five Or More Years Before Latest Fiscal Year	251	30
Revolving Loans	$ 14,638	18,960
Consumer | Non-accrual
Financing Receivable, Nonaccrual [Line Items]
Fiscal Year Before Latest Fiscal Year		33
Total non-accrual loans		33
Nonaccrual Loans with no related Allowance		$ 33

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Allowance for Credit Losses (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Allowance for loan losses
Beginning balance	$ 73,462
Charge-offs	(1,634)
Recoveries	173
Provision (release)	2,855
Ending balance	74,856
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	6,413
Provision (credit)	(1,200)
Ending balance	5,213
Commercial and industrial
Allowance for loan losses
Beginning balance	32,244
Charge-offs	(786)
Recoveries	55
Provision (release)	2,308
Ending balance	33,821
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	954
Provision (credit)	54
Ending balance	1,008
Energy
Allowance for loan losses
Beginning balance	3,143
Recoveries	118
Provision (release)	(92)
Ending balance	3,169
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	149
Provision (credit)	(149)
Commercial real estate - owner-occupied
Allowance for loan losses
Beginning balance	6,445
Provision (release)	(60)
Ending balance	6,385
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	125
Provision (credit)	(36)
Ending balance	89
Commercial real estate - non-owner-occupied
Allowance for loan losses
Beginning balance	28,130
Charge-offs	(848)
Provision (release)	707
Ending balance	27,989
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	5,096
Provision (credit)	(1,076)
Ending balance	4,020
Residential real estate
Allowance for loan losses
Beginning balance	3,456
Provision (release)	10
Ending balance	3,466
Allowance for Credit Losses on Off-Balance Sheet
Beginning balance	89
Provision (credit)	6
Ending balance	95
Consumer
Allowance for loan losses
Beginning balance	44
Provision (release)	(18)
Ending balance	26
Allowance for Credit Losses on Off-Balance Sheet
Provision (credit)	1
Ending balance	$ 1

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Charge-offs By Year of Origination (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Gross charge-offs by year of origination
2022	$ 163
2020	24
Revolving loans	584
Revolving loans converted to term loans	863
Gross Charge-offs	1,634
Commercial and industrial
Gross charge-offs by year of origination
2020	24
Revolving loans	584
Revolving loans converted to term loans	178
Gross Charge-offs	786
Commercial real estate - non-owner-occupied
Gross charge-offs by year of origination
2022	163
Revolving loans converted to term loans	685
Gross Charge-offs	$ 848

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Loans, Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	$ 12,082	$ 18,419
Related Allowance for Credit Losses	2,942	1,963
Amortized Cost of Collateral Dependent Loans with no related Allowance	6,398	8,567
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	10,822	9,308
Related Allowance for Credit Losses	2,926	1,392
Amortized Cost of Collateral Dependent Loans with no related Allowance	5,688	6,198
Energy
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	198	288
Amortized Cost of Collateral Dependent Loans with no related Allowance	198	288
Commercial real estate - owner-occupied
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	336	204
Amortized Cost of Collateral Dependent Loans with no related Allowance	336	204
Commercial real estate - non-owner-occupied
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	550	8,440
Related Allowance for Credit Losses	16	571
Amortized Cost of Collateral Dependent Loans with no related Allowance		1,698
Residential real estate
Financing Receivable, Impaired [Line Items]
Amortized Cost of Collateral Dependent Loans	176	179
Amortized Cost of Collateral Dependent Loans with no related Allowance	$ 176	$ 179

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Loans Modifications (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 15,300
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	15,329
Current | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	10,575
30-59 days | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	4,754
Total past due | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	4,754
Commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 7,272
Percentage Of Loans Class Modified	0.33%
Weighted average years added to life of loan	1 year 1 month 6 days
Commercial and industrial | Current | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 7,022
Commercial and industrial | 30-59 days | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	250
Commercial and industrial | Total past due | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	250
Commercial real estate - owner-occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 4,568
Percentage Of Loans Class Modified	0.79%
Weighted average years added to life of loan	6 months
Commercial real estate - owner-occupied | Current | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 64
Commercial real estate - owner-occupied | 30-59 days | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	4,504
Commercial real estate - owner-occupied | Total past due | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	4,504
Commercial real estate - non-owner-occupied | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 3,236
Percentage Of Loans Class Modified	0.12%
Weighted average years added to life of loan	6 months
Commercial real estate - non-owner-occupied | Current | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 3,236
Residential real estate | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 253
Percentage Of Loans Class Modified	0.05%
Weighted average years added to life of loan	4 months 24 days
Residential real estate | Current | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans Modified, Amortized Cost Basis	$ 253

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Lessee Lease Description [Line Items]
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Right-of-use asset	$ 29,000,000		$ 30,000,000
Lease liability	$ 33,000,000		$ 34,000,000
Weighted average remaining lease term	10 years 6 months
Weighted average discount rate	2.77%
Operating cash flows paid for operating lease	$ 1,000,000	$ 900,000
Operating cash flows paid for finance lease	100,000	$ 100,000
ROU assets that were exchanged for operating lease liabilities	$ 0
Minimum
Lessee Lease Description [Line Items]
Remaining lease term	2 years
Renewal term	5 years
Maximum
Lessee Lease Description [Line Items]
Remaining lease term	18 years
Renewal term	20 years

Leases - Components of operatin

Leases - Components of operating lease expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Components of operating lease expense
Finance lease amortization of right-of-use asset	$ 73	$ 70
Finance lease interest on lease liability	66	69
Operating lease expense	862	732
Variable lease expense	339	393
Short-term lease expense	6	5
Total lease expense	$ 1,346	$ 1,269

Leases - Future minimum lease p

Leases - Future minimum lease payments (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Future minimum lease payments under operating leases
2024	$ 2,815
2025	3,806
2026	3,852
2027	3,847
2028	3,427
Thereafter	10,750
Total lease payments	28,497
Less imputed interest	2,775
Total	$ 25,722
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Interest Payable And Other Liabilities
Future minimum lease payments under finance leases
2024	$ 367
2025	490
2026	490
2027	528
2028	540
Thereafter	7,705
Total lease payments	10,120
Less imputed interest	2,776
Total	$ 7,344
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Interest Payable And Other Liabilities

Goodwill and Core Deposit Int_3

Goodwill and Core Deposit Intangible - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill and Core Deposit Intangible
Goodwill impairment	$ 0
Core Deposits
Goodwill and Core Deposit Intangible
Estimated useful life of CDI	10 years

Goodwill and Core Deposit Int_4

Goodwill and Core Deposit Intangible - Change In Goodwill And Core Deposit Intangible (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Goodwill and Core Deposit Intangible
Goodwill, Gross Carrying Amount	$ 14,135	$ 14,135
Goodwill, Net Carrying Amount	14,135	14,135
Goodwill and Core Deposit Intangible
Gross Carrying Amount, Core deposit intangible	21,938	21,938
Accumulated Amortization, Core deposit intangible	5,669	4,738
Net Carrying Amount, Core deposit intangible	16,269	17,200
Goodwill and Core Deposit Intangible
Gross Carrying Amount	36,073	36,073
Accumulated Amortization	5,669	4,738
Net Carrying Amount	$ 30,404	$ 31,335

Goodwill and Core Deposit Int_5

Goodwill and Core Deposit Intangible - Core Deposit Intangible Future Amortization Expense (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Estimated Amortization Expense Over Next Five Years for Core Deposit Intangible
For the nine months ending December 31, 2024	$ 2,638
For the year ending December 31, 2025	3,155
For the year ending December 31, 2026	2,739
For the year ending December 31, 2027	2,325
For the year ending December 31, 2028	$ 1,909

Derivatives and Hedging - Narra

Derivatives and Hedging - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2024 USD ($) item contract	Dec. 31, 2022 item	Dec. 31, 2023 USD ($) item contract
Derivatives and Hedging
Collateral paid	$ 1.1		$ 1
Collateral received	$ 0.6		$ 1.5
Interest Rate Swap | Designated as Hedging Instrument
Derivatives and Hedging
Number of cash flow hedges matured | item	2
Number of cash flow hedges terminated | item	2
Number of instruments | item	1		5
Notional Amount	$ 250		$ 340
Derivative instruments to be reclassified to interest income in next 12 months	$ 3.3
Number of hedges terminated | item	2	5
Maximum exposure period	2 years 9 months 18 days
Interest Rate Swap | Not Designated as Hedging Instrument
Derivatives and Hedging
Number of instruments | contract	46		46
Notional Amount	$ 323		$ 307

Derivatives and Hedging - Sched

Derivatives and Hedging - Schedule of Derivative Instruments (Details) - Interest rate products - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivatives and Hedging
Asset Derivatives	$ 9,366	$ 7,931
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets	Other Assets
Liability Derivatives	$ 17,449	$ 13,829
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Interest Payable And Other Liabilities	Interest Payable And Other Liabilities
Not Designated as Hedging Instrument
Derivatives and Hedging
Asset Derivatives	$ 9,366	$ 7,830
Liability Derivatives	9,366	7,837
Designated as Hedging Instrument
Derivatives and Hedging
Asset Derivatives		101
Liability Derivatives	$ 8,083	$ 5,992

Derivatives and Hedging - Sch_2

Derivatives and Hedging - Schedule of Cash Flow Hedge on Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivatives and Hedging
Gain or (Loss) Recognized in OCI on Derivative	$ (2,461)	$ 1,171
Designated as Hedging Instrument | Interest rate products
Derivatives and Hedging
Gain or (Loss) Recognized in OCI on Derivative	(3,205)	1,540
Gain or (Loss) Recognized in OCI Included Component	(3,205)	1,540
Gain or (Loss) Reclassified from Accumulated OCI into Income	(928)
Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component	(928)
Interest Income | Designated as Hedging Instrument | Interest rate products
Derivatives and Hedging
Gain or (Loss) Recognized in OCI on Derivative	(3,215)
Gain or (Loss) Recognized in OCI Included Component	(3,215)
Gain or (Loss) Reclassified from Accumulated OCI into Income	(1,124)
Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component	(1,124)
Interest Expense | Designated as Hedging Instrument | Interest rate products
Derivatives and Hedging
Gain or (Loss) Recognized in OCI on Derivative	10	1,540
Gain or (Loss) Recognized in OCI Included Component	10	$ 1,540
Gain or (Loss) Reclassified from Accumulated OCI into Income	196
Gain or (Loss) Reclassified from Accumulated OCI into Income Included Component	$ 196

Time Deposits and Borrowings (S

Time Deposits and Borrowings (Schedule of Time Deposit Maturities and Borrowings) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Time deposits
Within One Year	$ 1,662,674
One to Two Years	170,867
Two to Three Years	1,305
Three to Four Years	1,500
Four to Five Years	790
Total	1,837,136	$ 1,831,092
FHLB borrowings
Total	77,840	$ 77,889
Time Deposit Maturities And Borrowings
Within One Year	1,664,223
One to Two Years	182,158
Two to Three Years	1,305
Three to Four Years	51,500
Four to Five Years	15,790
After Five Years	8,911
Total	1,923,887
Trust preferred securities
After Five Years	1,133
Total	1,133
Contract value	2,600
SBA Secured Borrowing
Time Deposit Maturities And Borrowings
After Five Years	7,778
Total	7,778
FHLB Borrowings
FHLB borrowings
Within One Year	1,549
One to Two Years	11,291
Three to Four Years	50,000
Four to Five Years	15,000
Total	$ 77,840

Changes in Accumulated Other _3

Changes in Accumulated Other Comprehensive Loss - Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Changes in Accumulated Other Comprehensive Loss
Realized gain on available-for-sale securities	$ 2	$ 63
Less: tax expense effect		15
Realized gain on available-for-sale securities, net of income tax	2	48
Loss on cash flow hedges	(1,124)
Gain on cash flow hedges	196
Less: tax expense effect	(214)
Net loss on cash flow hedges, net of tax	(714)
Total reclassified amount	$ (712)	$ 48

Regulatory Matters (Details)

Regulatory Matters (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Total Capital to Risk-Weighted Assets
Actual, amount	$ 825,110	$ 807,018
Actual, ratio	0.114	0.112
Required to be Considered Adequately Capitalized, amount	$ 761,189	$ 756,285
Required to be Considered Adequately Capitalized, ratio	0.105	0.105
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 745,321	$ 727,723
Actual, ratio	0.103	0.101
Required to be Considered Adequately Capitalized, amount	$ 616,201	$ 612,231
Required to be Considered Adequately Capitalized, ratio	0.085	0.085
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 736,438	$ 718,855
Actual, ratio	0.102	0.100
Required to be Considered Adequately Capitalized, amount	$ 507,460	$ 504,190
Required to be Considered Adequately Capitalized, ratio	7%	7%
Tier I Capital to Average Assets
Actual, amount	$ 745,321	$ 727,723
Actual, ratio	0.101	0.100
Required to be Considered Adequately Capitalized, amount	$ 295,231	$ 292,517
Required to be Considered Adequately Capitalized, amount	0.040	0.040
Capital conservation buffer	0.025	0.025
Bank
Total Capital to Risk-Weighted Assets
Actual, amount	$ 806,893	$ 800,522
Actual, ratio	0.111	0.111
Required to be considered well capitalized, amount	$ 724,451	$ 719,705
Required to be considered well capitalized, ratio	0.100	0.100
Required to be Considered Adequately Capitalized, amount	$ 760,673	$ 755,691
Required to be Considered Adequately Capitalized, ratio	0.105	0.105
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 727,104	$ 721,227
Actual, ratio	0.100	0.100
Required to be considered well capitalized, amount	$ 579,561	$ 575,764
Required to be considered well capitalized, ratio	0.080	0.080
Required to be Considered Adequately Capitalized, amount	$ 615,783	$ 611,750
Required to be Considered Adequately Capitalized, ratio	0.085	0.085
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 727,104	$ 721,227
Actual, ratio	0.100	0.100
Required to be considered well capitalized, amount	$ 470,893	$ 467,809
Required to be considered well capitalized, ratio	6.50%	6.50%
Required to be Considered Adequately Capitalized, amount	$ 507,116	$ 503,794
Required to be Considered Adequately Capitalized, ratio	7%	7%
Tier I Capital to Average Assets
Actual, amount	$ 727,104	$ 721,227
Actual, ratio	0.099	0.099
Required to be considered well capitalized, amount	$ 369,073	$ 365,675
Required to be considered well capitalized, ratio	0.050	0.050
Required to be Considered Adequately Capitalized, amount	$ 295,258	$ 292,540
Required to be Considered Adequately Capitalized, amount	0.040	0.040

Stockholders' Equity - Computat

Stockholders' Equity - Computation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings per Share
Net Income (Loss)	$ 18,223	$ 16,108
Less: preferred stock dividends	155
Net income available to common stockholders	$ 18,068	$ 16,108
Weighted average common shares (in shares)	49,510,808	48,635,910
Earnings per common share (in dollars per share)	$ 0.36	$ 0.33
Dilutive Earnings Per Share
Net Income (Loss)	$ 18,223	$ 16,108
Less: preferred stock dividends	155
Net income available to common stockholders	$ 18,068	$ 16,108
Weighted average common shares (in shares)	49,510,808	48,635,910
Effect of dilutive shares (in shares)	456,830	407,711
Weighted average dilutive common shares (in shares)	49,967,638	49,043,621
Diluted earnings per share (in dollars per share)	$ 0.36	$ 0.33
Stock-based awards not included because to do so would be antidilutive (in shares)	281,666	916,080

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	May 31, 2024
Class of Stock [Line Items]
Preferred dividends	$ 155
Series A Preferred Stock
Class of Stock [Line Items]
Aggregate dividends	$ 155
Series A Preferred Stock | Subsequent Event [Member]
Class of Stock [Line Items]
Dividends Payable amount per share		$ 20

Disclosure about Fair Value o_3

Disclosure about Fair Value of Financial Instruments - Fair Value Measurement of Assets on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	$ 2,288	$ 10,570
Foreclosed assets held-for-sale	5,374
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	2,288	10,570
Foreclosed assets held-for-sale	5,374
Fair Value, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	2,288	$ 10,570
Foreclosed assets held-for-sale	$ 5,374

Disclosure about Fair Value o_4

Disclosure about Fair Value of Financial Instruments - Quantitative Information about Unobservable Inputs Used in Nonrecurring Basis (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	$ 2,288	$ 10,570
Foreclosed assets held-for-sale	5,374
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	2,288	10,570
Foreclosed assets held-for-sale	5,374
Level 3 | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans	2,288	$ 10,570
Foreclosed assets held-for-sale	$ 5,374
Level 3 | Appraisal of collateral | Appraisal of collateral | Minimum | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0	0
Level 3 | Appraisal of collateral | Appraisal of collateral | Maximum | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0.25	0.56
Level 3 | Appraisal of collateral | Appraisal of collateral | Weighted Average | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0.19	0.22
Level 3 | Marketability discount | Market comparable properties | Minimum | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0.10
Level 3 | Marketability discount | Market comparable properties | Maximum | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0.10
Level 3 | Marketability discount | Market comparable properties | Weighted Average | Fair Value, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Collateral-dependent impaired loans, measurement input	0.10

Disclosure about Fair Value o_5

Disclosure about Fair Value of Financial Instruments - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financial Assets
Available-for-sale securities	$ 786,603	$ 766,653
Restricted equity securities	3,752	3,950
Financial Liabilities
Federal Home Loan Bank advances	77,840	77,889
Carrying Amount
Financial Assets
Cash and cash equivalents	206,773	255,229
Available-for-sale securities	786,603	766,653
Loans, net of ACL	6,174,331	6,054,228
Restricted equity securities	3,752	3,950
Interest receivable	37,833	37,294
Equity securities	6,917	5,794
Derivative assets	9,054	7,581
Financial Liabilities
Deposits	6,587,146	6,491,276
Federal Home Loan Bank advances	77,840	77,889
Other borrowings	8,911	8,950
Interest payable	19,921	18,529
Derivative liabilities	17,138	13,594
Level 1 | Estimate of Fair Value Measurement
Financial Assets
Cash and cash equivalents	206,773	255,229
Financial Liabilities
Deposits	954,240	990,458
Level 2 | Estimate of Fair Value Measurement
Financial Assets
Available-for-sale securities	786,603	766,653
Interest receivable	37,833	37,294
Derivative assets	9,054	7,581
Financial Liabilities
Federal Home Loan Bank advances	71,735	72,123
Other borrowings	9,885	9,891
Interest payable	19,921	18,529
Derivative liabilities	17,138	13,594
Level 3 | Estimate of Fair Value Measurement
Financial Assets
Loans, net of ACL	6,139,784	6,036,887
Restricted equity securities	3,752	3,950
Equity securities	6,917	5,794
Financial Liabilities
Deposits	$ 5,663,040	$ 5,547,203

Commitments and Credit Risk - C

Commitments and Credit Risk - Commitments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Loss Contingencies [Line Items]
Total commitments	$ 2,073,611	$ 2,146,429
Commitments to originate loans
Loss Contingencies [Line Items]
Total commitments	97,741	59,728
Standby letters of credit
Loss Contingencies [Line Items]
Total commitments	75,672	74,139
Line of credit
Loss Contingencies [Line Items]
Total commitments	1,897,172	2,008,356
Commitment related to investment fund
Loss Contingencies [Line Items]
Total commitments	$ 3,026	$ 4,206

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ 18,223	$ 16,108

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Mar. 31, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false