Old Second Bancorp (OSBC) 10-Q8 Nov 232023 Q3 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2023	Nov. 03, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2023
Entity File Number	000-10537
Entity Registrant Name	OLD SECOND BANCORP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3143493
Entity Address, Address Line One	37 South River Street
Entity Address, City or Town	Aurora
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60507
City Area Code	630
Local Phone Number	892-0202
Title of 12(b) Security	Common Stock
Trading Symbol	OSBC
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	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		44,697,917
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0000357173
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 55,548	$ 56,632
Interest earning deposits with financial institutions	53,485	58,545
Cash and cash equivalents	109,033	115,177
Securities available-for-sale, at fair value	1,229,618	1,539,359
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock	35,830	20,530
Loans held-for-sale	2,297	491
Loans	4,029,543	3,869,609
Less: allowance for credit losses on loans	51,729	49,480
Net loans	3,977,814	3,820,129
Premises and equipment, net	76,472	72,355
Other real estate owned	407	1,561
Mortgage servicing rights, at fair value	11,461	11,189
Goodwill	86,478	86,478
Core deposit intangible	11,820	13,678
Bank-owned life insurance ("BOLI")	108,187	106,608
Deferred tax assets, net	44,051	44,750
Other assets	64,688	56,012
Total assets	5,758,156	5,888,317
Deposits:
Noninterest bearing demand	1,862,659	2,051,702
Interest bearing:
Savings, NOW, and money market	2,273,671	2,617,100
Time	477,990	441,921
Total deposits	4,614,320	5,110,723
Securities sold under repurchase agreements	25,894	32,156
Other short-term borrowings	435,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,361	59,297
Senior notes		44,585
Notes payable and other borrowings		9,000
Other liabilities	65,250	55,642
Total liabilities	5,225,598	5,427,176
Stockholders' Equity
Common stock	44,705	44,705
Additional paid-in capital	201,553	202,276
Retained earnings	377,320	310,512
Accumulated other comprehensive loss	(90,619)	(93,124)
Treasury stock	(401)	(3,228)
Total stockholders' equity	532,558	461,141
Total liabilities and stockholders' equity	$ 5,758,156	$ 5,888,317

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Consolidated Balance Sheets
Common stock, Par value (in dollars per share)	$ 1	$ 1
Common stock, Shares authorized	60,000,000	60,000,000
Common stock, Shares issued	44,705,150	44,705,150
Common stock, Shares outstanding	44,684,987	44,582,311
Treasury stock, Shares	20,163	122,839

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest and dividend income
Loans, including fees	$ 62,665	$ 46,614	$ 181,436	$ 121,209
Loans held-for-sale	29	22	60	111
Securities:
Taxable	8,946	9,116	29,611	21,071
Tax exempt	1,333	1,332	4,007	3,946
Dividends from FHLBC and FRBC stock	597	261	1,273	677
Interest bearing deposits with financial institutions	659	663	1,887	1,714
Total interest and dividend income	74,229	58,008	218,274	148,728
Interest expense
Savings, NOW, and money market deposits	2,558	380	5,449	1,124
Time deposits	1,982	335	3,802	877
Securities sold under repurchase agreements	27	10	43	30
Other short-term borrowings	5,840	44	13,345	44
Junior subordinated debentures	245	285	805	849
Subordinated debentures	547	546	1,639	1,639
Senior notes		728	2,408	1,791
Notes payable and other borrowings		111	87	309
Total interest expense	11,199	2,439	27,578	6,663
Net interest and dividend income	63,030	55,569	190,696	142,065
Provision for credit losses	3,000	4,500	8,501	5,050
Net interest and dividend income after provision for credit losses	60,030	51,069	182,195	137,015
Noninterest income
Mortgage servicing rights mark to market gain (loss)	281	548	(148)	3,608
Net gain on sales of mortgage loans	407	449	1,111	1,682
Securities losses, net	(924)	(1)	(4,146)	(34)
Change in cash surrender value of BOLI	919	146	1,579	342
Card related income	2,606	2,653	7,540	8,194
Other income	1,024	2,165	3,286	3,949
Total noninterest income	9,877	11,496	25,450	34,170
Noninterest expense
Salaries and employee benefits	23,115	21,011	67,161	62,310
Occupancy, furniture and equipment	3,506	4,119	10,620	10,864
Computer and data processing	1,922	2,543	4,986	12,817
FDIC insurance	744	659	2,122	1,771
Net teller & bill paying	534	504	1,551	3,245
General bank insurance	300	257	911	923
Amortization of core deposit intangible	616	657	1,858	1,981
Advertising expense	93	83	338	459
Card related expense	1,347	1,453	3,785	3,044
Legal fees	97	212	699	648
Consulting & management fees	549	607	1,859	1,746
Other real estate (income) expense, net	(27)	21	181	96
Other expense	4,627	3,862	12,104	11,585
Total noninterest expense	37,423	35,988	108,175	111,489
Income before income taxes	32,484	26,577	99,470	59,696
Provision for income taxes	8,149	7,054	25,966	15,906
Net income	$ 24,335	$ 19,523	$ 73,504	$ 43,790
Basic earnings per share	$ 0.55	$ 0.43	$ 1.65	$ 0.98
Diluted earnings per share	0.54	0.43	1.62	0.97
Dividends declared per share	$ 0.05	$ 0.05	$ 0.15	$ 0.15
Wealth management
Noninterest income
Service charges on deposits	$ 2,475	$ 2,280	$ 7,203	$ 7,484
Service charges on deposits
Noninterest income
Service charges on deposits	2,504	2,661	7,290	7,063
Secondary mortgage fees
Noninterest income
Service charges on deposits	66	81	201	270
Mortgage servicing income
Noninterest income
Service charges on deposits	$ 519	$ 514	$ 1,534	$ 1,612

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Consolidated Statements of Comprehensive Income (Loss)
Net Income (Loss)	$ 24,335	$ 19,523	$ 73,504	$ 43,790
Unrealized holding losses on available-for-sale securities arising during the period	(9,062)	(41,163)	(1,212)	(146,477)
Related tax benefit	2,538	11,526	344	41,014
Holding losses, after tax, on available-for-sale securities	(6,524)	(29,637)	(868)	(105,463)
Less: Reclassification adjustment for the net losses realized during the period
Net realized losses	(924)	(1)	(4,146)	(34)
Related tax benefit	260	1	1,165	10
Net realized losses after tax	(664)		(2,981)	(24)
Other comprehensive (loss) income on available-for-sale securities	(5,860)	(29,637)	2,113	(105,439)
Changes in fair value of derivatives used for cash flow hedges	1,975	(4,868)	560	(2,381)
Related tax (expense) benefit	(548)	1,360	(168)	663
Other comprehensive income (loss) on cash flow hedges	1,427	(3,508)	392	(1,718)
Total other comprehensive (loss) income	(4,433)	(33,145)	2,505	(107,157)
Total comprehensive income (loss)	$ 19,902	$ (13,622)	$ 76,009	$ (63,367)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income	$ 73,504	$ 43,790
Adjustments to reconcile net income to net cash provided by operating activities:
Net premium / discount amortization on securities	2,506	4,259
Securities losses, net	4,146	34
Provision for credit losses	8,501	5,050
Originations of loans held-for-sale	(39,068)	(65,103)
Proceeds from sales of loans held-for-sale	37,962	69,263
Net gains on sales of mortgage loans	(1,111)	(1,682)
Mortgage servicing rights mark to market loss (gain)	148	(3,608)
Net accretion of discount on loans and unfunded commitments	(2,620)	(5,473)
Net change in cash surrender value of BOLI	(1,579)	(342)
Net gains on sale of other real estate owned	(229)	(163)
Provision for other real estate owned valuation losses	269	104
Depreciation of fixed assets and amortization of leasehold improvements	3,246	3,079
Net gains on disposal and transfer of fixed assets	(636)	(1,872)
Amortization of core deposit intangibles	1,858	1,981
Change in current income taxes receivable	1,070	7,279
Deferred tax expense	(289)	(1,854)
Change in accrued interest receivable and other assets	(10,053)	1,036
Accretion of purchase accounting adjustment on time deposits	(1,004)	(1,207)
Change in accrued interest payable and other liabilities	7,991	3,314
Stock based compensation	2,709	2,176
Net cash provided by operating activities	87,321	60,061
Cash flows from investing activities
Proceeds from maturities and calls, including pay down of securities available-for-sale	104,471	231,483
Proceeds from sales of securities available-for-sale	205,738	3,303
Purchases of securities available-for-sale	(4,186)	(301,649)
Net purchases of FHLBC/FRBC stock	(15,300)	(6,156)
Net change in loans	(164,252)	(443,628)
Proceeds from sales of other real estate owned, net of participations and improvements	1,800	941
Proceeds from disposition of premises and equipment	4,460	12,167
Net purchases of premises and equipment	(8,217)	(2,670)
Cash paid for acquisition, net of cash and cash equivalents acquired		(146)
Net cash provided by (used in) investing activities	124,514	(506,355)
Cash flows from financing activities
Net change in deposits	(495,399)	(183,666)
Net change in securities sold under repurchase agreements	(6,262)	(14,840)
Net change in other short-term borrowings	345,000	25,000
Repayment of term note	(9,000)	(3,000)
Net change in notes payable and other borrowings, excluding term note		(6,056)
Repayment of senior notes	(45,000)
Dividends paid on common stock	(6,713)	(6,650)
Purchase of treasury stock	(605)	(447)
Net cash used in financing activities	(217,979)	(189,659)
Net change in cash and cash equivalents	(6,144)	(635,953)
Cash and cash equivalents at beginning of period	115,177	752,107
Cash and cash equivalents at end of period	$ 109,033	$ 116,154

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at Dec. 31, 2021	$ 44,705	$ 202,443	$ 252,011	$ 8,768	$ (5,900)	$ 502,027
Increase (Decrease) in Stockholders' Equity
Net income			43,790			43,790
Other comprehensive income loss, net of tax				(107,157)		(107,157)
Dividends declared on common stock			(6,675)			(6,675)
Vesting of restricted stock		(2,919)			2,919
Stock based compensation		2,176				2,176
Purchase of treasury stock from taxes withheld on stock awards					(447)	(447)
Balance at Sep. 30, 2022	44,705	201,700	289,126	(98,389)	(3,428)	433,714
Balance at Jun. 30, 2022	44,705	201,282	271,831	(65,244)	(3,670)	448,904
Increase (Decrease) in Stockholders' Equity
Net income			19,523			19,523
Other comprehensive income loss, net of tax				(33,145)		(33,145)
Dividends declared on common stock			(2,228)			(2,228)
Vesting of restricted stock		(304)			304
Stock based compensation		722				722
Purchase of treasury stock from taxes withheld on stock awards					(62)	(62)
Balance at Sep. 30, 2022	44,705	201,700	289,126	(98,389)	(3,428)	433,714
Balance at Dec. 31, 2022	44,705	202,276	310,512	(93,124)	(3,228)	461,141
Increase (Decrease) in Stockholders' Equity
Net income			73,504			73,504
Other comprehensive income loss, net of tax				2,505		2,505
Dividends declared on common stock			(6,696)			(6,696)
Vesting of restricted stock		(3,432)			3,432
Stock based compensation		2,709				2,709
Purchase of treasury stock from taxes withheld on stock awards					(605)	(605)
Balance at Sep. 30, 2023	44,705	201,553	377,320	(90,619)	(401)	532,558
Balance at Jun. 30, 2023	44,705	200,963	355,219	(86,186)	(746)	513,955
Increase (Decrease) in Stockholders' Equity
Net income			24,335			24,335
Other comprehensive income loss, net of tax				(4,433)		(4,433)
Dividends declared on common stock			(2,234)			(2,234)
Vesting of restricted stock		(345)			345
Stock based compensation		935				935
Balance at Sep. 30, 2023	$ 44,705	$ 201,553	$ 377,320	$ (90,619)	$ (401)	$ 532,558

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ 513,955	$ 448,904	$ 461,141	$ 502,027
Other comprehensive (loss) income, net of tax	(4,433)	(33,145)	2,505	(107,157)
Balance	$ 532,558	$ 433,714	$ 532,558	$ 433,714
Dividend declared and paid (per share)	$ 0.05	$ 0.05	$ 0.15	$ 0.15
Total Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ (86,186)	$ (65,244)	$ (93,124)	$ 8,768
Other comprehensive (loss) income, net of tax	(4,433)	(33,145)	2,505	(107,157)
Balance	(90,619)	(98,389)	(90,619)	(98,389)
Accumulated Unrealized Gain (Loss) on Securities Available-for-Sale
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(80,919)	(64,663)	(88,892)	11,139
Other comprehensive (loss) income, net of tax	(5,860)	(29,637)	2,113	(105,439)
Balance	(86,779)	(94,300)	(86,779)	(94,300)
Accumulated Unrealized Gain (Loss) on Derivative Instruments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(5,267)	(581)	(4,232)	(2,371)
Other comprehensive (loss) income, net of tax	1,427	(3,508)	392	(1,718)
Balance	$ (3,840)	$ (4,089)	$ (3,840)	$ (4,089)

Basis of Presentation and Chang

Basis of Presentation and Changes in Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Basis of Presentation and Changes in Significant Accounting Policies
Basis of Presentation and Changes in Significant Accounting Policies	Note 1 – Basis of Presentation and Changes in Significant Accounting Policies The accounting policies followed in the preparation of the interim consolidated financial statements are consistent with those used in the preparation of the annual financial information. The interim consolidated financial statements reflect all normal and recurring adjustments that are necessary, in the opinion of management, for a fair statement of results for the interim period presented. Results for the period ended September 30, 2023 are not necessarily indicative of the results that may be expected for the year ending December 31, 2023. These interim consolidated financial statements and accompanying notes are unaudited and should be read in conjunction with the audited financial statements and notes included in Old Second Bancorp, Inc.’s (the “Company”) annual report on Form 10-K for the year ended December 31, 2022. Unless otherwise indicated, dollar amounts in the tables contained in the notes to the consolidated financial statements are in thousands. Certain items in prior periods have been reclassified to conform to the current presentation. The Company’s consolidated financial statements are prepared in accordance with United States generally accepted accounting principles (“GAAP”) and follow general practices within the banking industry. Application of these principles requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the consolidated financial statements. Future changes in information may affect these estimates, assumptions, and judgments, which, in turn, may affect amounts reported in the consolidated financial statements. Recent Accounting Pronouncements The following is a summary of recent accounting pronouncements that have impacted or could potentially affect the Company : ASU 2018-16, ASU 2020-04, ASU 2021-01, and ASU 2022-06 Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting. Reference Rate Reform The Company formed a LIBOR transition team in 2019 and developed a project plan to assess the use of alternative indexes and to seek to ensure all financial instruments that reference LIBOR are identified, quantified, and researched for the LIBOR fallback language available or needed. The Company completed the ISDA protocol adherence for LIBOR fallback language for all commercial swaps, met with its commercial loan clients to also guide their swap fallback language adherence, and worked to revise all credit documents being issued by Old Second National Bank (the “Bank”) for new loans to ensure appropriate fallback language was included. We discontinued the use of LIBOR as a reference rate for all consumer loans issued after July 31, 2021, and all commercial loans issued after December 31, 2021, with certain exceptions for those loans that were in the process of funding at the end of 2021. The Company’s systems were updated to handle multiple SOFR-based indexes and we planned accordingly for the transition of existing LIBOR exposures as the final LIBOR cessation date was June 30, 2023. As of September 30, 2023, the Company’s LIBOR transition processes were determined to be completed and alternative index rates are in place. ASU 2022-01 Derivatives and Hedging (Topic 815): Fair Value Hedging – Portfolio Layer Method ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures Change in Significant Accounting Policies Significant accounting policies are presented in Note 1 to the consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. These policies, along with the disclosures presented in the other financial statement notes and in this discussion, provide information on how significant assets and liabilities are valued in the consolidated financial statements and how those values are determined. During the third quarter of 2023, the Company had no changes to significant accounting policies or estimates. Subsequent Events On October 17, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on November 6, 2023, to stockholders of record as of October 27, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on November 6, 2023.

Acquisition

Acquisition	9 Months Ended
Acquisition	Sep. 30, 2023
Acquisition
Acquisition	Note 2 – Acquisition On December 1, 2021, the Company completed its acquisition of West Suburban Bancorp, Inc. (“West Suburban”), a bank holding company, and its wholly owned subsidiary, West Suburban Bank, based in Lombard, Illinois, with operations throughout our existing market footprint. At closing, the Company acquired $2.94 billion of assets, $1.50 billion of loans, $1.07 billion of securities, and $2.69 billion of deposits, net of fair value adjustments. Under the terms of the merger agreement, each outstanding share of West Suburban common stock was exchanged for 42.413 shares of Company common stock, plus $271.15 of cash. This resulted in merger consideration of $295.2 million, based on the closing price of the Company’s common stock on the date of acquisition, which consisted of 15.7 million shares of the Company’s common stock and $100.7 million of cash. Goodwill of $67.9 million associated with the acquisition was recorded by the Company, which was the result of expected synergies, operational efficiencies and other factors. The acquisition of West Suburban was accounted for as a business combination, and none of the $67.9 million of goodwill recorded is expected to be deductible for income tax purposes.

Securities

Securities	9 Months Ended
Securities	Sep. 30, 2023
Securities
Securities	Note 3 – Securities Investment Portfolio Management Our investment portfolio serves the liquidity needs and income objectives of the Company. While the portfolio serves as an important component of the overall liquidity management at the Bank, portions of the portfolio also serve as income producing assets. The size and composition of the portfolio reflects liquidity needs, loan demand and interest income objectives. Portfolio size and composition will be adjusted from time to time. While a significant portion of the portfolio consists of readily marketable securities to address liquidity, other parts of the portfolio may reflect funds invested pending future loan demand or to maximize interest income without undue interest rate risk. Investments are comprised of debt securities and non-marketable equity investments. Securities available-for-sale are carried at fair value. Unrealized gains and losses, net of tax, on securities available-for-sale are reported as a separate component of equity. This balance sheet component changes as interest rates and market conditions change. Unrealized gains and losses are not included in the calculation of regulatory capital. Federal Home Loan Bank of Chicago (“FHLBC”) and Federal Reserve Bank of Chicago (“FRBC”) stock are considered nonmarketable equity investments. FHLBC stock was recorded at $20.9 million at September 30, 2023, and $5.6 million at December 31, 2022. FRBC stock was recorded at $14.9 million at September 30, 2023 and December 31, 2022. The following tables summarize the amortized cost and fair value of the securities portfolio at September 30, 2023, and December 31, 2022, and the corresponding amounts of gross unrealized gains and losses: Gross Gross Amortized Unrealized Unrealized Fair September 30, 2023 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,481 $ - $ (7,704) $ 216,777 U.S. government agencies 60,197 - (4,376) 55,821 U.S. government agencies mortgage-backed 122,653 - (18,084) 104,569 States and political subdivisions 240,107 142 (20,149) 220,100 Corporate bonds 5,000 - (39) 4,961 Collateralized mortgage obligations 450,470 54 (63,845) 386,679 Asset-backed securities 71,241 - (4,325) 66,916 Collateralized loan obligations 175,995 10 (2,210) 173,795 Total securities available-for-sale $ 1,350,144 $ 206 $ (120,732) $ 1,229,618 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2022 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,054 $ - $ (11,925) $ 212,129 U.S. government agencies 61,178 - (5,130) 56,048 U.S. government agencies mortgage-backed 140,588 - (15,598) 124,990 States and political subdivisions 239,999 363 (14,234) 226,128 Corporate bonds 10,000 - (378) 9,622 Collateralized mortgage obligations 596,336 1 (62,569) 533,768 Asset-backed securities 210,388 6 (8,466) 201,928 Collateralized loan obligations 180,276 - (5,530) 174,746 Total securities available-for-sale $ 1,662,819 $ 370 $ (123,830) $ 1,539,359 1 Excludes accrued interest receivable of $6.7 million and $6.8 million at September 30, 2023 and December 31, 2022, respectively, that is recorded in other assets on the consolidated balance sheets. The fair value, amortized cost and weighted average yield of debt securities at September 30, 2023, by contractual maturity, are listed in the table below. Securities not due at a single maturity date are shown separately. Weighted Amortized Average Fair Securities available-for-sale Cost Yield Value Due in one year or less $ 49,989 0.64 % $ 49,804 Due after one year through five years 253,955 1.17 241,430 Due after five years through ten years 60,975 2.92 53,882 Due after ten years 164,866 3.11 152,543 529,785 1.92 497,659 Mortgage-backed and collateralized mortgage obligations 573,123 2.29 491,248 Asset-backed securities 71,241 4.24 66,916 Collateralized loan obligations 175,995 7.21 173,795 Total securities available-for-sale $ 1,350,144 3.00 % $ 1,229,618 At September 30, 2023, the Company had no securities issued from any one originator, other than the U.S. Government and its agencies, which individually amounted to over 10% of the Company’s stockholders’ equity. Securities with unrealized losses with no corresponding allowance for credit losses at September 30, 2023 and December 31, 2022, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, were as follows (in thousands except for number of securities): Less than 12 months 12 months or more September 30, 2023 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 5 $ 7,704 $ 216,777 5 $ 7,704 $ 216,777 U.S. government agencies - - - 9 4,376 55,821 9 4,376 55,821 U.S. government agencies mortgage-backed - - - 128 18,084 104,569 128 18,084 104,569 States and political subdivisions 44 3,232 110,511 30 16,917 104,582 74 20,149 215,093 Corporate bonds - - - 1 39 4,961 1 39 4,961 Collateralized mortgage obligations 2 14 756 146 63,831 379,159 148 63,845 379,915 Asset-backed securities - - - 19 4,325 66,916 19 4,325 66,916 Collateralized loan obligations - - - 33 2,210 170,803 33 2,210 170,803 Total securities available-for-sale 46 $ 3,246 $ 111,267 371 $ 117,486 $ 1,103,588 417 $ 120,732 $ 1,214,855 Less than 12 months 12 months or more December 31, 2022 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries 1 $ 1,025 $ 24,121 4 $ 10,900 $ 188,008 5 $ 11,925 $ 212,129 U.S. government agencies - - - 9 5,130 56,048 9 5,130 56,048 U.S. government agencies mortgage-backed 15 975 11,369 117 14,623 113,621 132 15,598 124,990 States and political subdivisions 45 5,800 128,770 15 8,434 48,877 60 14,234 177,647 Corporate bonds - - - 2 378 9,622 2 378 9,622 Collateralized mortgage obligations 80 12,895 180,624 120 49,674 348,880 200 62,569 529,504 Asset-backed securities 30 3,030 121,915 21 5,436 79,659 51 8,466 201,574 Collateralized loan obligations 23 3,579 112,772 11 1,951 61,974 34 5,530 174,746 Total securities available-for-sale 194 $ 27,304 $ 579,571 299 $ 96,526 $ 906,689 493 $ 123,830 $ 1,486,260 Each quarter, we perform an analysis to determine if any of the unrealized losses on securities available-for-sale are comprised of credit losses as compared to unrealized losses due to market interest rate adjustments. Our assessment includes a review of the unrealized loss for each security issuance held; the financial condition and near-term prospects of the issuer, including external credit ratings and recent downgrades; and our ability and intent to hold the security for a period of time sufficient for a recovery in value. We also consider the extent to which the securities are issued by the federal government or its agencies, and any guarantee of issued amounts by those agencies. The portfolio continues to consist of a mix of fixed and floating-rate, high quality securities, largely rated AA (or better), displaying an overall effective duration of approximately 3.0 years. No credit losses were determined to be present as of September 30, 2023, as there was no credit quality deterioration noted. Therefore, no provision for credit losses on securities was recognized for the third quarter of 2023. The following table presents net realized losses on securities available-for-sale for three and nine months ended: Three Months Ended Nine Months Ended September 30, September 30, Securities available-for-sale 2023 2022 2023 2022 Proceeds from sales of securities $ 65,572 $ - $ 205,738 $ 3,303 Gross realized losses on securities (924) (1) (4,146) (34) Net realized losses $ (924) $ (1) $ (4,146) $ (34) Income tax benefit on net realized losses $ 260 $ 1 $ 1,165 $ 10 Effective tax rate applied 28.1 % N/M 28.1 % 29.4 % N/M - Not meaningful As of September 30, 2023, securities valued at $808.7 million were pledged for borrowings, and for other purposes, an increase from $547.8 million of securities pledged at year-end 2022.

Loans and Allowance for Credit

Loans and Allowance for Credit Losses on Loans	9 Months Ended
Loans and Allowance for Credit Losses on Loans	Sep. 30, 2023
Loans and Allowance for Credit Losses on Loans
Loans and Allowance for Credit Losses on Loans	Note 4 – Loans and Allowance for Credit Losses on Loans Major segments of loans were as follows: September 30, 2023 December 31, 2022 Commercial $ 834,877 $ 840,964 Leases 354,827 277,385 Commercial real estate – investor 1,047,122 987,635 Commercial real estate – owner occupied 809,050 854,879 Construction 202,546 180,535 Residential real estate – investor 53,762 57,353 Residential real estate – owner occupied 227,446 219,718 Multifamily 372,020 323,691 HELOC 102,055 109,202 Other 1 25,838 18,247 Total loans 4,029,543 3,869,609 Allowance for credit losses on loans (51,729) (49,480) Net loans 2 $ 3,977,814 $ 3,820,129 1 The “Other” segment includes consumer loans and overdrafts in this table and in subsequent tables within Note 4 – Loans and Allowance for Credit Losses on Loans. 2 Excludes accrued interest receivable of $19.2 million and $15.9 million at September 30, 2023 and December 31, 2022, respectively, that is recorded in other assets on the consolidated balance sheets. It is the policy of the Company to review each prospective credit prior to making a loan in order to determine if an adequate level of security or collateral has been obtained. The type of collateral, when required, will vary from liquid assets to real estate. The Company seeks to assure access to collateral, in the event of borrower default, through adherence to lending laws, the Company’s lending standards and credit monitoring procedures. Although the Bank makes loans primarily within its market area, there are no significant concentrations of loans where the customers’ ability to honor loan terms is dependent upon a single economic sector. The real estate related categories listed above represent 69.8% and 70.6% of the portfolio at September 30, 2023, and December 31, 2022, respectively, and include a mix of owner occupied and non-owner occupied commercial real estate, residential, construction and multifamily loans. The following tables represent the activity in the allowance for credit losses for loans, or the ACL, for the three and nine months ended September 30, 2023 and 2022: Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended September 30, 2023 Commercial $ 11,532 $ (1,025) $ 20 $ 12 $ 10,499 Leases 2,690 (193) - 95 2,592 Commercial real estate – investor 20,031 4,726 6,774 20 18,003 Commercial real estate – owner occupied 12,562 (154) 35 12 12,385 Construction 1,179 (39) - 100 1,240 Residential real estate – investor 743 (55) - 3 691 Residential real estate – owner occupied 1,868 (36) - 25 1,857 Multifamily 2,737 (165) - - 2,572 HELOC 1,694 (77) - 35 1,652 Other 278 30 107 37 238 Total $ 55,314 $ 3,012 $ 6,936 $ 339 $ 51,729 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Nine months ended September 30, 2023 Commercial $ 11,968 $ (1,287) $ 427 $ 245 $ 10,499 Leases 2,865 498 882 111 2,592 Commercial real estate – investor 10,674 14,117 6,845 57 18,003 Commercial real estate – owner occupied 15,001 (2,397) 236 17 12,385 Construction 1,546 (406) - 100 1,240 Residential real estate – investor 768 (104) - 27 691 Residential real estate – owner occupied 2,046 (260) - 71 1,857 Multifamily 2,453 119 - - 2,572 HELOC 1,806 (242) - 88 1,652 Other 353 53 301 133 238 Total $ 49,480 $ 10,091 $ 8,691 $ 849 $ 51,729 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended September 30, 2022 Commercial $ 14,114 $ (919) $ 67 $ 47 $ 13,175 Leases 1,736 (24) 178 - 1,534 Commercial real estate – investor 9,436 256 124 19 9,587 Commercial real estate – owner occupied 11,478 3,618 12 87 15,171 Construction 1,535 9 - - 1,544 Residential real estate – investor 661 147 - 8 816 Residential real estate – owner occupied 1,869 149 - 113 2,131 Multifamily 2,434 33 - 63 2,530 HELOC 1,542 386 - 35 1,963 Other 583 (128) 103 44 396 Total $ 45,388 $ 3,527 $ 484 $ 416 $ 48,847 Provision for Allowance for credit losses Beginning (Release of) Ending Nine months ended September 30, 2022 Balance Credit Losses Charge-offs Recoveries Balance Commercial $ 11,751 $ 1,488 $ 149 $ 85 $ 13,175 Leases 3,480 (1,768) 178 - 1,534 Commercial real estate – investor 10,795 (664) 604 60 9,587 Commercial real estate – owner occupied 4,913 10,289 133 102 15,171 Construction 3,373 (1,829) - - 1,544 Residential real estate – investor 760 33 - 23 816 Residential real estate – owner occupied 2,832 (919) - 218 2,131 Multifamily 3,675 (1,208) - 63 2,530 HELOC 2,510 (649) - 102 1,963 Other 192 404 320 120 396 Total $ 44,281 $ 5,177 $ 1,384 $ 773 $ 48,847 At September 30, 2023, our allowance for credit losses (“ACL”) on loans totaled $51.7 million, and our ACL on unfunded commitments, included in other liabilities, totaled $2.9 million including related purchase accounting adjustments. During the first nine months of 2023, we recorded net provision expense of $8.5 million based on historical loss rate updates driven by higher charge offs in commercial real estate-investor, loan growth of approximately $160.0 million, downward risk rating migration including an increased reserve on loans individually analyzed, and our assessment of estimated future credit losses. The ACL on loans excludes $2.7 million, $4.3 million and $4.4 million of allowance for unfunded commitments as of September 30, 2023, December 31, 2022 and September 30, 2022, respectively, recorded within Other Liabilities. The total ACL on unfunded commitments listed as of September 30, 2023, December 31, 2022, and September 30, 2022 excludes the purchase accounting adjustment of $149,000, $819,000, and $1.0 million, respectively, recorded due to our acquisition of West Suburban, which is also recorded within Other Liabilities, and is being accreted in interest income over the estimated life of the unused commitments. Generally, the Bank considers a loan to be collateral dependent when, based on current information and events, it is probable that foreclosure will be initiated. Additionally, the Bank will review all loans meeting the criteria for individual analysis, to determine if repayment or satisfaction of the loan is expected through the sale of collateral. This will generally be the case for credits with high loan-to-values. Exceptions to this policy would include loans with guarantors that have the means and willingness to support the obligation. Non-accruing loans with an outstanding balance of $500,000 or more are assessed on an individual loan level basis. When a financial asset is deemed collateral-dependent, the level of credit loss is measured by the difference between amortized cost of the financial asset and the fair value of collateral adjusted for estimated cost to sell. The Company had $55.8 million and $50.5 million of collateral dependent loans secured by real estate or business assets as of September 30, 2023, and December 31, 2022, respectively. The following tables present the collateral dependent loans and the related ACL allocated by segment of loans as of September 30, 2023 and December 31, 2022: Accounts ACL September 30, 2023 Real Estate Receivable Equipment Other Total Allocation Commercial $ 849 $ 679 $ - $ - $ 1,528 $ 2 Leases - - 339 - 339 339 Commercial real estate – investor 26,724 - - - 26,724 4,848 Commercial real estate – owner occupied 17,636 - - - 17,636 4,201 Construction 7,206 - - - 7,206 - Residential real estate – investor 32 - - - 32 - Residential real estate – owner occupied 1,679 - - - 1,679 - Multifamily 568 - - - 568 - HELOC 39 - - - 39 - Total $ 54,733 $ 679 $ 339 $ - $ 55,751 $ 9,390 Accounts ACL December 31, 2022 Real Estate Receivable Equipment Other Total Allocation Commercial $ 883 $ 5,915 $ - $ 364 $ 7,162 $ 569 Leases - - 1,248 - 1,248 1,248 Commercial real estate – investor 16,576 - - - 16,576 2,875 Commercial real estate – owner occupied 19,188 - - 2,310 21,498 5,808 Residential real estate – investor 675 - - - 675 - Residential real estate – owner occupied 1,817 - - - 1,817 244 Multifamily 1,322 - - - 1,322 - HELOC 180 - - - 180 - Total $ 40,641 $ 5,915 $ 1,248 $ 2,674 $ 50,478 $ 10,744 Aged analysis of past due loans by segments of loans was as follows: 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and September 30, 2023 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ 1,829 $ 1,874 $ 1,052 $ 4,755 $ 830,122 $ 834,877 $ 979 Leases 2,502 - 157 2,659 352,168 354,827 - Commercial real estate – investor 2,205 16,728 16,116 35,049 1,012,073 1,047,122 - Commercial real estate – owner occupied 15,232 120 1,879 17,231 791,819 809,050 - Construction 118 200 7,206 7,524 195,022 202,546 - Residential real estate – investor 252 - 277 529 53,233 53,762 140 Residential real estate – owner occupied 735 419 1,820 2,974 224,472 227,446 - Multifamily 713 127 - 840 371,180 372,020 - HELOC 646 88 259 993 101,062 102,055 90 Other - - - - 25,838 25,838 - Total $ 24,232 $ 19,556 $ 28,766 $ 72,554 $ 3,956,989 $ 4,029,543 $ 1,209 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and December 31, 2022 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ 3 $ 1,012 $ 825 $ 1,840 $ 839,124 $ 840,964 $ 460 Leases 447 22 614 1,083 276,302 277,385 - Commercial real estate – investor 3,276 1,276 4,315 8,867 978,768 987,635 - Commercial real estate – owner occupied 373 113 2,211 2,697 852,182 854,879 173 Construction 14 - 116 130 180,405 180,535 - Residential real estate – investor 445 - 987 1,432 55,921 57,353 144 Residential real estate – owner occupied 1,191 - 2,232 3,423 216,295 219,718 485 Multifamily 267 361 1,322 1,950 321,741 323,691 - HELOC 291 90 392 773 108,429 109,202 - Other 19 - - 19 18,228 18,247 - Total $ 6,326 $ 2,874 $ 13,014 $ 22,214 $ 3,847,395 $ 3,869,609 $ 1,262 The table presents all nonaccrual loans as of September 30, 2023, and December 31, 2022: Nonaccrual loan detail September 30, 2023 With no ACL December 31, 2022 With no ACL Commercial $ 2,167 $ 2,167 $ 7,189 $ 6,598 Leases 377 38 1,876 - Commercial real estate – investor 26,724 11,786 4,346 4,244 Commercial real estate – owner occupied 18,290 3,833 8,050 3,813 Construction 7,206 7,206 251 - Residential real estate – investor 1,362 1,362 1,528 675 Residential real estate – owner occupied 3,627 3,627 3,713 1,572 Multifamily 1,141 1,141 2,538 1,322 HELOC 1,222 1,222 2,109 180 Other - - 2 - Total $ 62,116 $ 32,382 $ 31,602 $ 18,404 The Company recognized $189,000 and $304,000 of interest on nonaccrual loans during the three months and nine months ended September 30, 2023, respectively. Credit Quality Indicators The Company categorizes loans into credit risk categories based on current financial information, overall debt service coverage, comparison to industry averages, historical payment experience, and current economic trends. This analysis includes loans with outstanding balances or commitments greater than $50,000 and excludes homogeneous loans such as home equity lines of credit and residential mortgages. Loans with a classified risk rating are reviewed quarterly regardless of size or loan type. The Company uses the following definitions for classified risk ratings: Special Mention. Substandard. Doubtful. Credits that are not covered by the definitions above are pass credits, which are not considered to be adversely rated. Credit quality indicators by loan segment and loan origination date at September 30, 2023 were as follows: 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 215,492 $ 187,682 $ 41,464 $ 13,359 $ 10,676 $ 4,315 $ 311,562 $ 1,379 $ 785,929 Special Mention - 500 244 - 51 - 29,855 - 30,650 Substandard - 79 1,381 2,735 9,689 - 4,414 - 18,298 Total commercial 215,492 188,261 43,089 16,094 20,416 4,315 345,831 1,379 834,877 Leases Pass 151,691 125,092 $ 47,808 17,522 9,545 2,595 - - 354,253 Special Mention - - - - - - - - - Substandard - 339 - - 235 - - - 574 Total leases 151,691 125,431 47,808 17,522 9,780 2,595 - - 354,827 Commercial real estate – investor Pass 176,779 341,597 203,972 111,333 59,770 67,264 8,148 - 968,863 Special Mention - 12,866 11,267 - - - - - 24,133 Substandard 10,964 11,787 1,950 7,748 9,278 - 12,399 - 54,126 Total commercial real estate – investor 187,743 366,250 217,189 119,081 69,048 67,264 20,547 - 1,047,122 Commercial real estate – owner occupied Pass 105,963 139,223 181,543 78,750 54,909 101,396 33,258 - 695,042 Special Mention 1,758 11,722 18,180 26,480 222 354 - - 58,716 Substandard - 14,994 19,926 1,142 18,811 419 - - 55,292 Total commercial real estate – owner occupied 107,721 165,939 219,649 106,372 73,942 102,169 33,258 - 809,050 Construction Pass 26,529 75,698 56,217 19,531 1,837 1,155 3,699 - 184,666 Special Mention 305 312 - - - - - - 617 Substandard - 7,206 - 10,057 - - - - 17,263 Total construction 26,834 83,216 56,217 29,588 1,837 1,155 3,699 - 202,546 Residential real estate – investor Pass 3,310 14,560 8,954 6,317 7,116 10,519 1,417 - 52,193 Special Mention - - 67 - - - - - 67 Substandard - 398 - - 418 686 - - 1,502 Total residential real estate – investor 3,310 14,958 9,021 6,317 7,534 11,205 1,417 - 53,762 Residential real estate – owner occupied Pass 26,371 41,915 41,439 26,544 15,147 71,637 766 - 223,819 Special Mention - - - - - - - - - Substandard - 122 - 90 686 2,729 - - 3,627 Total residential real estate – owner occupied 26,371 42,037 41,439 26,634 15,833 74,366 766 - 227,446 Multifamily Pass 69,947 79,689 101,878 57,792 12,391 42,603 382 - 364,682 Special Mention - 170 3,505 326 1,656 540 - - 6,197 Substandard - 887 - - - 254 - - 1,141 Total multifamily 69,947 80,746 105,383 58,118 14,047 43,397 382 - 372,020 HELOC Pass 1,765 2,760 211 1,443 1,631 2,494 90,317 - 100,621 Special Mention - - - - - - - - - Substandard 39 27 1 1 - 106 1,260 - 1,434 Total HELOC 1,804 2,787 212 1,444 1,631 2,600 91,577 - 102,055 Other Pass 4,461 2,068 1,415 223 151 88 17,432 25,838 Special Mention - - - - - - - - Substandard - - - - - - - - Total other 4,461 2,068 1,415 223 151 88 17,432 - 25,838 Total loans Pass 782,308 1,010,284 684,901 332,814 173,173 304,066 466,981 1,379 3,755,906 Special Mention 2,063 25,570 33,263 26,806 1,929 894 29,855 - 120,380 Substandard 11,003 35,839 23,258 21,773 39,117 4,194 18,073 - 153,257 Total loans $ 795,374 $ 1,071,693 $ 741,422 $ 381,393 $ 214,219 $ 309,154 $ 514,909 $ 1,379 $ 4,029,543 Credit quality indicators by loan segment and loan origination date at December 31, 2022, were as follows: 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 225,056 $ 70,608 $ 21,597 $ 12,742 $ 6,957 $ 2,651 $ 447,821 $ - $ 787,432 Special Mention 1,875 272 1,182 2,432 - - 21,286 - 27,047 Substandard 4,958 2,447 2,981 12,176 7 - 3,916 - 26,485 Total commercial 231,889 73,327 25,760 27,350 6,964 2,651 473,023 - 840,964 Leases Pass 161,379 64,203 $ 26,995 17,653 4,449 830 - - 275,509 Special Mention - - - - - - - - - Substandard 1,606 - - 270 - - - - 1,876 Total leases 162,985 64,203 26,995 17,923 4,449 830 - - 277,385 Commercial real estate – investor Pass 416,094 228,686 118,491 63,845 46,935 46,406 7,113 - 927,570 Special Mention 5,349 1,417 5,490 10,206 1,070 9,123 - - 32,655 Substandard 12,332 2,018 - 10,763 - 2,297 - - 27,410 Total commercial real estate – investor 433,775 232,121 123,981 84,814 48,005 57,826 7,113 - 987,635 Commercial real estate – owner occupied Pass 169,703 223,731 105,669 47,351 49,367 86,660 33,745 - 716,226 Special Mention 8,430 22,242 48,184 17,668 231 1,008 - - 97,763 Substandard 2,546 17,129 1,191 16,962 - 3,062 - - 40,890 Total commercial real estate – owner occupied 180,679 263,102 155,044 81,981 49,598 90,730 33,745 - 854,879 Construction Pass 53,058 65,758 39,542 2,390 226 1,408 1,523 - 163,905 Special Mention - - 15,297 - - - - - 15,297 Substandard 1,217 - - 116 - - - - 1,333 Total construction 54,275 65,758 54,839 2,506 226 1,408 1,523 - 180,535 Residential real estate – investor Pass 14,737 9,910 6,945 8,585 4,853 9,548 991 - 55,569 Special Mention - 70 - - - - - - 70 Substandard 621 - - 499 186 408 - - 1,714 Total residential real estate – investor 15,358 9,980 6,945 9,084 5,039 9,956 991 - 57,353 Residential real estate – owner occupied Pass 41,885 44,884 28,418 16,146 12,152 70,741 1,638 - 215,864 Special Mention - - - - - - - - - Substandard 131 267 237 723 131 2,365 - - 3,854 Total residential real estate – owner occupied 42,016 45,151 28,655 16,869 12,283 73,106 1,638 - 219,718 Multifamily Pass 76,877 126,257 52,262 13,125 39,703 6,098 329 - 314,651 Special Mention 377 3,683 342 1,684 - - - - 6,086 Substandard 2,100 - - - 587 267 - - 2,954 Total multifamily 79,354 129,940 52,604 14,809 40,290 6,365 329 - 323,691 HELOC Pass 2,760 517 1,497 1,703 657 2,288 97,258 - 106,680 Special Mention - - - - - - 111 - 111 Substandard 62 1 - - 67 309 1,972 - 2,411 Total HELOC 2,822 518 1,497 1,703 724 2,597 99,341 - 109,202 Other Pass 4,195 2,835 432 167 69 111 10,436 - 18,245 Special Mention - - - - - - - - - Substandard - - 1 - - - 1 - 2 Total other 4,195 2,835 433 167 69 111 10,437 - 18,247 Total loans Pass 1,165,744 837,389 401,848 183,707 165,368 226,741 600,854 - 3,581,651 Special Mention 16,031 27,684 70,495 31,990 1,301 10,131 21,397 - 179,029 Substandard 25,573 21,862 4,410 41,509 978 8,708 5,889 - 108,929 Total loans $ 1,207,348 $ 886,935 $ 476,753 $ 257,206 $ 167,647 $ 245,580 $ 628,140 $ - $ 3,869,609 The gross charge-offs activity by loan type and year of origination for the nine months ended September 30, 2023 were as follows: Current period gross charge-offs 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial $ - - 17 364 - 46 $ - $ - $ 427 Leases - 870 - - 12 - - - 882 Commercial real estate – investor - 4,121 71 2,653 - - - - 6,845 Commercial real estate – owner occupied - 22 178 4 - 32 - - 236 Construction - - - - - - - - - Residential real estate – investor - - - - - - - - - Residential real estate – owner occupied - - - - - - - - - Multifamily - - - - - - - - - HELOC - - - - - - - - - Other - 3 26 7 - 265 - - 301 Total $ - $ 5,016 $ 292 $ 3,028 $ 12 $ 343 - - $ 8,691 The Company had $176,000 and $600,000 in residential real estate loans in the process of foreclosure as of September 30, 2023 and December 31, 2022, respectively. As of January 1, 2023, the Company prospectively adopted ASU 2022-02, Topic 326 “Troubled Debt Restructuring (“TDRs”) and Vintage Disclosures”, see Note 1. Fifteen loans, totaling $43.0 million in aggregate, were modified which were experiencing financial difficulty during the nine-month period ending September 30, 2023. There were no TDR loan modifications for the three months ended September 30, 2022, and there were two TDR loan modifications for an aggregate of $39,000 for the nine months ended September 30, 2022. TDRs were classified as being in default on a case-by-case basis when they failed to be in compliance with the modified terms. There were no financial difficulty loans modified in payment default as of September 30, 2023 and was no TDR default activity for the period ended September 30, 2023, for loans that were restructured within the prior 12-month period. The following table presents the amortized costs basis of loans at September 30, 2023 that were both experiencing financial difficulty and modified during the period ended September 30, 2023 by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to amortized costs basis of each class of financing receivable is also presented below. September 30, 2023 Term Extension Combination - Term Extension and Interest Rate Reduction Combination - Term Extension and Payment Delay Total Loans Modified % of Total Loan Segment Modified to Total Loan Segment Commercial $ 1,713 $ 979 $ - $ 2,692 0.3% Commercial real estate – investor 12,755 - 10,608 23,363 2.2% Commercial real estate – owner occupied 16,218 - - 16,218 2.0% Residential real estate – owner occupied 437 - - 437 0.2% Multifamily 254 - - 254 0.1% HELOC 39 - - 39 0.0% Total $ 31,416 $ 979 $ 10,608 $ 43,003 1.1% The Company closely monitors the performance of loan modifications to borrowers experiencing financial difficulty. The following table presents the performance of loans that have been modified as of September 30, 2023. September 30, 2023 30-59 days past due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loan Modified Commercial $ - $ - $ 979 $ 979 $ 1,713 $ 2,692 Commercial real estate – investor - - - - 23,363 23,363 Commercial real estate – owner occupied - - - - 16,218 16,218 Residential real estate – owner occupied - - - - 437 437 Multifamily - - - - 254 254 HELOC - - - - 39 39 Total $ - $ - $ 979 $ 979 $ 42,024 $ 43,003 The following table summarizes the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the period ended September 30, 2023. The Company had two Commercial real estate – investor loans that had a payment modification, one changed to a single payment at maturity and the other changed from principal and interest to interest only until maturity. September 30, 2023 Weighted-Average Term Extension (In Months) Weighted-Average Interest Rate Change Weighted-Average Delay of Payment (In Months) Commercial 6.74 5.00 % - Commercial real estate – investor 9.81 - 7.17 Commercial real estate – owner occupied 14.00 - - Residential real estate – owner occupied 2.00 - - Multifamily 16.00 - - HELOC 24.00 - - Total 11.17 5.00 % 7.17

Deposits

Deposits	9 Months Ended
Deposits	Sep. 30, 2023
Deposits
Deposits	Note 5 – Deposits Major classifications of deposits were as follows: September 30, 2023 December 31, 2022 Noninterest bearing demand $ 1,862,659 $ 2,051,702 Savings 1,003,498 1,145,592 NOW accounts 567,997 609,338 Money market accounts 702,176 862,170 Certificates of deposit of less than $100,000 248,272 244,017 Certificates of deposit of $100,000 through $250,000 162,901 157,438 Certificates of deposit of more than $250,000 66,817 40,466 Total deposits $ 4,614,320 $ 5,110,723

Borrowings

Borrowings	9 Months Ended
Borrowings	Sep. 30, 2023
Borrowings
Borrowings	Note 6 – Borrowings The following table is a summary of borrowings as of September 30, 2023 and December 31, 2022. Junior subordinated debentures are discussed in more detail in Note 7. September 30, 2023 December 31, 2022 Securities sold under repurchase agreements $ 25,894 $ 32,156 Other short-term borrowings 435,000 90,000 Junior subordinated debentures 1 25,773 25,773 Subordinated debentures 59,361 59,297 Senior notes - 44,585 Notes payable and other borrowings - 9,000 Total borrowings $ 546,028 $ 260,811 1 See Note 7: Junior Subordinated Debentures The Company enters into deposit sweep transactions where the transaction amounts are secured by pledged securities. These transactions consistently mature overnight from the transaction date and are governed by sweep repurchase agreements. All sweep repurchase agreements are treated as financings secured by U.S. government agencies and collateralized mortgage-backed securities, and had a carrying amount of $25.9 million at September 30, 2023, and $32.2 million at December 31, 2022. The fair value of the pledged collateral was $43.8 million at September 30, 2023, and $71.4 million at December 31, 2022. At September 30, 2023, there were no customers with secured balances exceeding 10% of stockholders’ equity. The Company’s borrowings at the FHLBC require the Bank to be a member and invest in the stock of the FHLBC. Total borrowings are generally limited to the lower of 35% of total assets or 60% of the book value of certain mortgage loans. As of September 30, 2023, the Bank had $435.0 million in short-term advances outstanding under the FHLBC. There were $90.0 million in short-term advances as of December 31, 2022. FHLBC stock held at September 30, 2023 was valued at $20.9 million, and any potential FHLBC advances were collateralized by loans and securities with a principal balance of $1.47 billion, which carried a FHLBC-calculated combined collateral value of $1.02 billion. The Company had excess collateral of $581.7 million available to secure borrowings at September 30, 2023. In the second quarter of 2021, we issued $60.0 million in aggregate principal amount of our 3.50% Fixed-to-Floating Rate Subordinated Notes due April 15, 2031 (the “Notes”). The Company used the net proceeds from the offering for general corporate purposes. The Notes bear interest at a fixed annual rate of 3.50%, from and including the date of issuance to but excluding April 15, 2026, payable semi-annually in arrears. From and including April 15, 2026 to, but excluding the maturity date or early redemption date, the interest rate will reset quarterly to an interest rate per annum equal to three-month Term SOFR (as defined by the Note) plus 273 basis points, payable quarterly in arrears. As of September 30, 2023 and December 31, 2022, we had $59.4 million and $59.3 million of subordinated debentures outstanding, net of deferred issuance costs, respectively. The Company issued senior notes in December 2016 with a ten-year maturity, and terms included interest payable semiannually at 5.75% for five years . Beginning December 31, 2021, the senior debt began to pay interest at a floating rate, with interest payable quarterly at three month LIBOR plus 385 basis points. The interest rate at June 30, 2023 and December 31, 2022 was 9.39% and 8.62% , respectively. The notes were redeemable, in whole or in part, at the option of the Company, beginning with the interest payment date on December 31, 2021, and on any floating rate interest payment date thereafter, at a redemption price equal to 100% of the principal amount of the notes plus accrued and unpaid interest. On June 30, 2023, we redeemed all of the $45.0 million senior notes. Upon redemption, the related deferred debt issuance costs of $362,000 was also recorded as interest expense, resulting in an effective cost of this debt issuance of 12.85% for the second quarter of 2023. On February 24, 2020, the Company originated a $20.0 million three-year term note with a correspondent bank. The term note was issued at one-month LIBOR plus 175 basis points, and required principal payments quarterly and interest payments monthly. This note was included within Notes payable and other borrowings on the Consolidated Balance Sheets, and the remaining $9.0 million balance of the note was paid off on February 24, 2023. The Company also has an undrawn line of credit of $30.0 million with a correspondent bank to be used for short-term funding needs; advances under this line can be outstanding up to 360 days from the date of issuance. This line of credit has not been utilized since early 2019.

Junior Subordinated Debentures

Junior Subordinated Debentures	9 Months Ended
Junior Subordinated Debentures	Sep. 30, 2023
Junior Subordinated Debentures.
Junior Subordinated Debentures	Note 7 – Junior Subordinated Debentures The Company issued $25.0 million of cumulative trust preferred securities through a private placement completed by an unconsolidated subsidiary, Old Second Capital Trust II, in April 2007. These trust preferred securities mature in 30 years , but subject to regulatory approval, can be called in whole or in part on a quarterly basis commencing June 15, 2017. The quarterly cash distributions on the securities were fixed at 6.77% through June 15, 2017, and now have a floating rate of 150 basis points over three-month SOFR . Upon conversion to a floating rate, a cash flow hedge was initiated which resulted in the total interest rate paid on the debt of 3.77% and 4.39% for the quarters ended September 30, 2023 and September 30, 2022, respectively. The Company issued a $25.8 million subordinated debenture to Old Second Capital Trust II in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities. The junior subordinated debentures issued by the Company are disclosed on the Consolidated Balance Sheets, and the related interest expense for each issuance is included in the Consolidated Statements of Income. As of September 30, 2023 and December 31, 2022, the remaining unamortized debt issuance costs related to the junior subordinated debentures were $1,000 and are included as a reduction to the balance of the junior subordinated debentures on the Consolidated Balance Sheets. The remaining deferred issuance costs on the junior subordinated debentures related to the issuance of Old Second Capital Trust II will be amortized to interest expense over the remainder of the 30 -year term of the notes and are included in the Consolidated Statements of Income.

Equity Compensation Plans

Equity Compensation Plans	9 Months Ended
Equity Compensation Plans	Sep. 30, 2023
Equity Compensation Plans
Equity Compensation Plans	Note 8 – Equity Compensation Plans Stock-based awards are outstanding under the Company’s 2019 Equity Incentive Plan, as amended and restated (the “2019 Plan”). The 2019 Plan was originally approved at the May 2019 annual stockholders’ meeting and authorized 600,000 shares, and at the May 2021 annual stockholders’ meeting, the Company obtained stockholder approval to increase the number of shares of common stock authorized for issuance under the 2019 Plan by 1,200,000 shares, from 600,000 shares to 1,800,000 shares. Following the approval of the 2019 Plan, no further awards will be granted under any other prior plan. The 2019 Plan authorizes the granting of qualified stock options, non-qualified stock options, restricted stock, restricted stock units, and stock appreciation rights (“SARs”). Awards may be granted to selected directors, officers, employees or eligible service providers under the 2019 Plan at the discretion of the Compensation Committee of the Company’s Board of Directors. As of September 30, 2023, 975,712 shares remained available for issuance under the 2019 Plan. The Company has granted only restricted stock units under the 2019 Equity Plan. Generally, restricted stock units granted under the 2019 Plan vest three years from the grant date, but the Compensation Committee of the Company’s Board of Directors has discretionary authority to change the terms of particular awards including the vesting schedule. Under the 2019 Plan, unless otherwise provided in an award agreement, upon the occurrence of a change in control, all equity awards then held by the participant will become fully exercisable immediately if, and all stock awards and cash incentive awards will become fully earned and vested immediately if, (i) the 2019 Plan is not an obligation of the successor entity following a change in control or (ii) the 2019 Plan is an obligation of the successor entity following a change in control and the participant incurs a termination of service without cause or for good reason following the change in control. Notwithstanding the immediately preceding sentence, if the vesting of an award is conditioned upon the achievement of performance measures, then such vesting will generally be subject to the following: if, at the time of the change in control, the performance measures are less than 50% attained (pro rata based upon the time of the period through the change in control), the award will become vested and exercisable on a fractional basis with the numerator being equal to the percentage of attainment and the denominator being 50%; and if, at the time of the change in control, the performance measures are at least 50% attained (pro rata based upon the time of the period through the change in control), the award will become fully earned and vested immediately upon the change in control. Awards of restricted stock under the 2019 Plan generally entitle holders to voting and dividend rights upon grant and are subject to forfeiture until certain restrictions have lapsed including employment for a specific period. Awards of restricted stock units under the 2019 Plan are also subject to forfeiture until certain restrictions have lapsed including employment for a specific period, but do not entitle holders to voting rights until the restricted period ends and shares are transferred in connection with the units. There were 240,149 and 268,160 restricted stock units issued under the 2019 Plan during the nine months ended September 30, 2023 and September 30, 2022, respectively. Compensation expense is recognized over the vesting period of the restricted stock units based on the market value of the award on the issue date. Total compensation cost that has been recorded for the 2019 Plan was $2.7 million for the nine months ended September 30, 2023 and $2.3 million for the nine months ended September 30, 2022. A summary of changes in the Company’s unvested restricted awards for the nine months ended September 30, 2023, is as follows: September 30, 2023 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 649,210 $ 12.84 Granted 240,149 17.02 Vested (137,534) 12.53 Forfeited (15,191) 14.25 Unvested at September 30 736,634 $ 14.23 Total unrecognized compensation cost of restricted awards was $5.0 million as of September 30, 2023, which is expected to be recognized over a weighted-average period of 1.87 years.

Earnings Per Share

Earnings Per Share	9 Months Ended
Earnings Per Share	Sep. 30, 2023
Earnings Per Share
Earnings Per Share	Note 9 – Earnings Per Share The earnings per share, both basic and diluted, are as follows: Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Basic earnings per share: Weighted-average common shares outstanding 44,675,489 44,565,626 44,653,451 44,509,072 Net income $ 24,335 $ 19,523 $ 73,504 $ 43,790 Basic earnings per share $ 0.55 $ 0.43 $ 1.65 $ 0.98 Diluted earnings per share: Weighted-average common shares outstanding 44,675,489 44,565,626 44,653,451 44,509,072 Dilutive effect of unvested restricted awards 1 752,920 655,915 736,767 698,920 Diluted average common shares outstanding 45,428,409 45,221,541 45,390,218 45,207,992 Net Income $ 24,335 $ 19,523 $ 73,504 $ 43,790 Diluted earnings per share $ 0.54 $ 0.43 $ 1.62 $ 0.97 1 Includes the common stock equivalents for restricted share rights that are dilutive.

Regulatory & Capital Matters

Regulatory & Capital Matters	9 Months Ended
Regulatory & Capital Matters	Sep. 30, 2023
Regulatory & Capital Matters
Regulatory & Capital Matters	Note 10 Regulatory & Capital Matters The Bank is subject to the risk-based capital regulatory guidelines, which include the methodology for calculating the risk-weighted Bank assets, developed by the Office of the Comptroller of the Currency (the “OCC”) and the other bank regulatory agencies. In connection with the current risk-based capital regulatory guidelines, the Bank’s Board of Directors has established an internal guideline requiring the Bank to maintain a Tier 1 leverage capital ratio at or above eight percent (8%) and a total risk-based capital ratio at or above twelve percent (12%). At September 30, 2023, the Bank exceeded those thresholds. At September 30, 2023, the Bank’s Tier 1 capital leverage ratio was 10.43%, an increase of 111 basis points from December 31, 2022, and is above the 8.00% objective. The Bank’s total capital ratio was 13.57%, an increase of 82 basis points from December 31, 2022, and also above the objective of 12.00%. Bank holding companies are generally required to maintain minimum levels of capital in accordance with capital guidelines implemented by the Board of Governors of the Federal Reserve System. The general bank and holding company capital adequacy guidelines are shown in the accompanying table, as are the capital ratios of the Company and the Bank, as of September 30, 2023 and December 31, 2022. The Basel III Rules are applicable to all banking organizations that are subject to minimum capital requirements, including federal and state banks and savings and loan associations, as well as to bank and savings and loan holding companies, other than “small bank holding companies”, which are generally holding companies with consolidated assets of less than $3.0 billion. A detailed discussion of the Basel III Rules is included in Part I, Item 1 of the Company’s Form 10-K for the year ended December 31, 2022, under the heading “Supervision and Regulation.” At September 30, 2023 and December 31, 2022, the Company, on a consolidated basis, exceeded the minimum thresholds to be considered “well capitalized” under current regulatory defined capital ratios. Capital levels and industry defined regulatory minimum required levels are as follows: Minimum Capital Well Capitalized Adequacy with Capital Under Prompt Corrective Actual Conservation Buffer, if applicable 1 Action Provisions 2 Amount Ratio Amount Ratio Amount Ratio September 30, 2023 Common equity tier 1 capital to risk weighted assets Consolidated $ 530,368 11.00 % $ 337,507 7.00 % N/A N/A Old Second Bank 601,999 12.49 337,389 7.00 $ 313,290 6.50 % Total capital to risk weighted assets Consolidated 667,182 13.84 506,171 10.50 N/A N/A Old Second Bank 653,813 13.57 505,898 10.50 481,808 10.00 Tier 1 capital to risk weighted assets Consolidated 555,368 11.52 409,777 8.50 N/A N/A Old Second Bank 601,999 12.49 409,687 8.50 385,588 8.00 Tier 1 capital to average assets Consolidated 555,368 9.62 230,922 4.00 N/A N/A Old Second Bank 601,999 10.43 230,872 4.00 288,590 5.00 December 31, 2022 Common equity tier 1 capital to risk weighted assets Consolidated $ 457,206 9.67 % $ 330,966 7.00 % N/A N/A Old Second Bank 552,404 11.70 330,498 7.00 $ 306,891 6.50 % Total capital to risk weighted assets Consolidated 592,039 12.52 496,518 10.50 N/A N/A Old Second Bank 602,237 12.75 495,960 10.50 472,343 10.00 Tier 1 capital to risk weighted assets Consolidated 482,206 10.20 401,838 8.50 N/A N/A Old Second Bank 552,404 11.70 401,319 8.50 377,712 8.00 Tier 1 capital to average assets Consolidated 482,206 8.14 236,956 4.00 N/A N/A Old Second Bank 552,404 9.32 237,083 4.00 296,354 5.00 1 Amounts are shown inclusive of a capital conservation buffer of 2.50%. 2 The prompt corrective action provisions are only applicable at the Bank level. The Bank exceeded the general minimum regulatory requirements to be considered “well capitalized.” As part of its response to the impact of the COVID-19 pandemic, in the first quarter of 2020, U.S. federal regulatory authorities issued an interim final rule that provided banking organizations that adopted CECL during the 2020 calendar year with the option to delay for two years the estimated impact of CECL on regulatory capital relative to regulatory capital determined under the prior incurred loss methodology, followed by a three-year transition period to phase out the aggregate amount of the capital benefit provided during the initial two-year delay (i.e., a five-year transition in total). In connection with our adoption of CECL on January 1, 2020, we elected to utilize the five-year CECL transition. As of September 30, 2023, the capital measures of the Company exclude $1.9 million, which is the modified CECL transition adjustment. Dividend Restrictions In addition to the above requirements, banking regulations and capital guidelines generally limit the amount of dividends that may be paid by a bank without prior regulatory approval. Under these regulations, the amount of dividends that may be paid in any calendar year is limited to the current year’s profits, combined with the retained profit of the previous two years , subject to the capital requirements described above. As of September 30, 2023, the Bank had capacity to pay dividends of $70.4 million to the Company without prior regulatory approval. Pursuant to the Basel III rules, the Bank must keep a capital conservation buffer of 2.50% above the regulatory minimum capital requirements, which must consist entirely of Common Equity Tier 1 capital in order to avoid additional limitations on capital distributions and certain other payments.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2023
Fair Value Measurements
Fair Value Measurements	Note 11 Fair Value Measurements Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy established by the Company also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Three levels of inputs that may be used to measure fair value are: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the Company has the ability to access as of the measurement date. Level 2: Significant observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, and other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a company’s own view about the assumptions that market participants would use in pricing an asset or liability. During the nine-month period ended September 30, 2023, $14.9 million of asset-backed securities and $6.8 million of collateralized mortgage obligations were transferred to Level 2 from Level 3. There were no transfers between levels at September 30, 2022. The majority of securities available-for-sale are valued by external pricing services or dealer market participants and are classified in Level 2 of the fair value hierarchy. Both market and income valuation approaches are utilized. Quarterly, the Company evaluates the methodologies used by the external pricing services or dealer market participants to develop the fair values to determine whether the results of the valuations are representative of an exit price in the Company’s principal markets and an appropriate representation of fair value. The Company uses the following methods and significant assumptions to estimate fair value: ● Government-sponsored agency debt securities are primarily priced using available market information through processes such as benchmark spreads, market valuations of like securities, like securities groupings and matrix pricing. ● Other government-sponsored agency securities, MBS and some of the actively traded real estate mortgage investment conduits and collateralized mortgage obligations are priced using available market information including benchmark yields, prepayment speeds, spreads, volatility of similar securities and trade date. ● State and political subdivisions are largely grouped by characteristics (e.g., geographical data and source of revenue in trade dissemination systems). Because some securities are not traded daily and due to other grouping limitations, active market quotes are often obtained using benchmarking for like securities. ● Auction rate securities are priced using market spreads, cash flows, prepayment speeds, and loss analytics. Therefore, the valuations of auction rate asset-backed securities are considered Level 2 valuations. ● Asset-backed collateralized loan obligations were priced using data from a pricing matrix supported by our bond accounting service provider and are therefore considered Level 2 valuations. ● Annually every security holding is priced by a pricing service independent of the regular and recurring pricing services used. The independent service provides a measurement to indicate if the price assigned by the regular service is within or outside of a reasonable range. Management reviews this report and applies judgment in adjusting calculations at year end related to securities pricing. ● Residential mortgage loans available for sale in the secondary market are carried at fair market value. The fair value of loans held-for-sale is determined using quoted secondary market prices. ● Lending related commitments to fund certain residential mortgage loans, e.g., residential mortgage loans with locked interest rates to be sold in the secondary market and forward commitments for the future delivery of mortgage loans to third party investors, as well as forward commitments for future delivery of MBS are considered derivatives. Fair values are estimated based on observable changes in mortgage interest rates including prices for MBS from the date of the commitment and do not typically involve significant judgments by management. ● The fair value of mortgage servicing rights is based on a valuation model that calculates the present value of estimated net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income to derive the resultant value. The Company is able to compare the valuation model inputs, such as the discount rate, prepayment speeds, weighted average delinquency and foreclosure/bankruptcy rates to widely available published industry data for reasonableness. ● Interest rate swap positions, both assets and liabilities, are based on valuation pricing models using an income approach reflecting readily observable market parameters such as interest rate yield curves. ● The fair value of individually evaluated loans with specific allocations of the allowance for credit losses is essentially based on recent real estate appraisals or the fair value of the collateralized asset. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are made in the appraisal process by the appraisers to reflect differences between the available comparable sales and income data. Such adjustments are usually significant and typically result in a Level 3 classification of the inputs for determining fair value. ● Nonrecurring adjustments to certain commercial and residential real estate properties classified as other real estate owned (“OREO”) are measured at fair value, less costs to sell. Fair values are based on third party appraisals of the property, resulting in a Level 3 classification, or an executed pending sales contract. In cases where the carrying amount exceeds the fair value, less costs to sell, an impairment loss is recognized. Assets and Liabilities Measured at Fair Value on a Recurring Basis The tables below present the balance of assets and liabilities at September 30, 2023 and December 31, 2022, respectively, measured by the Company at fair value on a recurring basis: September 30, 2023 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 216,777 $ - $ - $ 216,777 U.S. government agencies - 55,821 - 55,821 U.S. government agencies mortgage-backed - 104,569 - 104,569 States and political subdivisions - 206,034 14,066 220,100 Corporate bonds - 4,961 - 4,961 Collateralized mortgage obligations - 386,679 - 386,679 Asset-backed securities - 66,916 - 66,916 Collateralized loan obligations - 173,795 - 173,795 Loans held-for-sale - 2,297 - 2,297 Mortgage servicing rights - - 11,461 11,461 Interest rate swap agreements, including risk participation agreement - 9,028 - 9,028 Mortgage banking derivatives - 37 - 37 Total $ 216,777 $ 1,010,137 $ 25,527 $ 1,252,441 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 14,293 $ - $ 14,293 Total $ - $ 14,293 $ - $ 14,293 December 31, 2022 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 212,129 $ - $ - $ 212,129 U.S. government agencies - 56,048 - 56,048 U.S. government agencies mortgage-backed - 124,990 - 124,990 States and political subdivisions - 211,899 14,229 226,128 Corporate bonds - 9,622 - 9,622 Collateralized mortgage obligations - 526,998 6,770 533,768 Asset-backed securities - 186,916 15,012 201,928 Collateralized loan obligations - 174,746 - 174,746 Loans held-for-sale - 491 - 491 Mortgage servicing rights - - 11,189 11,189 Interest rate swap agreements - 6,516 - 6,516 Mortgage banking derivatives - 76 - 76 Total $ 212,129 $ 1,298,302 $ 47,200 $ 1,557,631 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 12,265 $ - $ 12,265 Total $ - $ 12,265 $ - $ 12,265 The changes in Level 3 assets and liabilities measured at fair value on a recurring basis are as follows: Nine Months Ended September 30, 2023 Securities available-for-sale Collateralized States and Mortgage Asset-backed Mortgage Political Servicing Securities Obligations Subdivisions Rights Beginning balance January 1, 2023 $ 15,012 $ 6,770 $ 14,229 $ 11,189 Transfers out of Level 3 (14,885) (6,764) - - Total gains or losses Included in earnings (11) - (99) 232 Included in other comprehensive income 226 (6) (132) - Purchases, issuances, sales, and settlements Purchases - - 406 - Issuances - - - 420 Settlements (342) - (338) (380) Ending balance September 30, 2023 $ - $ - $ 14,066 $ 11,461 Nine Months Ended September 30, 2022 Securities available-for-sale States and Mortgage Political Servicing Subdivisions Rights Beginning balance January 1, 2022 $ 15,236 $ 7,097 Total gains or losses Included in earnings (98) 4,384 Included in other comprehensive income (1,333) - Purchases, issuances, sales, and settlements Issuances 519 756 Settlements (1,015) (776) Ending balance September 30, 2022 $ 13,309 $ 11,461 The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as of September 30, 2023: Weighted Measured at fair value Significant Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs States and political subdivisions $ 14,066 Discounted Cash Flow Discount Rate 3.5 – 5.9% 4.3 % Liquidity Premium 0.3 – 0.5% 0.5 % Mortgage servicing rights $ 11,461 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 0.0 – 16.4% 6.2 % The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as December 31, 2022: Weighted Measured at fair value Significant Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs States and political subdivisions $ 14,229 Discounted Cash Flow Discount Rate 2.3 – 5.8% 4.4 % Liquidity Premium 0.3 – 0.5% 0.5 % Collateralized mortgage obligations $ 6,770 Discounted Cash Flow Discount Rate 7.0 – 7.0% 7.0 % Asset-backed securities $ 15,012 Discounted Cash Flow Discount Rate 6.2 – 6.5% 6.3 % Mortgage servicing rights $ 11,189 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 3.6 – 27.3% 6.2 % Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis: The Company may be required, from time to time, to measure certain other assets at fair value on a nonrecurring basis in accordance with GAAP. These assets consist of individually evaluated loans and OREO. For assets measured at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022, respectively, the following tables provide the level of valuation assumptions used to determine each valuation and the carrying value of the related assets: September 30, 2023 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 63,322 $ 63,322 Other real estate owned, net 2 - - 407 407 Total $ - $ - $ 63,729 $ 63,729 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans, which had a carrying amount of $82.0 million and a valuation allowance of $18.7 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $1.0 million for the nine months ended September 30, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $407,000 at September 30, 2023, which is made up of the outstanding balance of $525,000 , and a valuation allowance of $118,000 December 31, 2022 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 47,700 $ 47,700 Other real estate owned, net 2 - - 1,561 1,561 Total $ - $ - $ 49,261 $ 49,261 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans, which had a carrying amount of $65.3 million and a valuation allowance of $17.6 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $12.2 million for the year December 31, 2022. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $1.6 million at December 31, 2022, which is made up of the outstanding balance of $2.5 million, net of a purchase accounting adjustment of $131,000 and a valuation allowance of $856,000 . The Company has estimated the fair values of these assets based primarily on Level 3 inputs. OREO and individually evaluated loans are generally valued using the fair value of collateral provided by third party appraisals. These valuations include assumptions related to cash flow projections, discount rates, and recent comparable sales. The numerical ranges of unobservable inputs for these valuation assumptions are not meaningful.

Fair Values of Financial Instru

Fair Values of Financial Instruments	9 Months Ended
Fair Values of Financial Instruments	Sep. 30, 2023
Fair Values of Financial Instruments
Fair Values of Financial Instruments	Note 12 – Fair Values of Financial Instruments The estimated fair values approximate carrying amount for all items except those described in the following table. Securities available-for-sale fair values are based upon market prices or dealer quotes, and if no such information is available, on the rate and term of the security. The carrying value of FHLBC stock approximates fair value as the stock is nonmarketable and can only be sold to the FHLBC or another member institution at par. At September 30, 2023 and December 31, 2022, the fair values of loans are estimated on an exit price basis incorporating discounts for credit, liquidity and marketability factors. The fair value of time deposits was estimated using discounted future cash flows at current rates offered for deposits of similar remaining maturities. The fair values of borrowings were estimated based on interest rates available to the Company for debt with similar terms and remaining maturities. The fair value of off balance sheet volume was not considered material. The carrying amount and estimated fair values of financial instruments were as follows: September 30, 2023 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 55,548 $ 55,548 $ 55,548 $ - $ - Interest earning deposits with financial institutions 53,485 53,485 53,485 - - Securities available-for-sale 1,229,618 1,229,618 216,777 998,775 14,066 FHLBC and FRBC stock 35,830 35,830 - 35,830 - Loans held-for-sale 2,297 2,297 - 2,297 - Net loans 3,977,814 3,855,774 - - 3,855,774 Mortgage servicing rights 11,641 11,641 - - 11,641 Interest rate swap agreements 8,980 8,980 - 8,980 - Interest rate lock commitments and forward contracts 37 37 - 37 - Interest receivable on securities and loans 25,921 25,921 - 25,921 - Financial liabilities: Noninterest bearing deposits $ 1,862,659 $ 1,862,659 $ 1,862,659 $ - $ - Interest bearing deposits 2,751,661 2,738,632 - 2,738,632 - Securities sold under repurchase agreements 25,894 25,894 - 25,894 - Other short-term borrowings 435,000 435,000 - 435,000 - Junior subordinated debentures 25,773 19,072 - 19,072 - Subordinated debentures 59,361 46,161 - 46,161 - Senior notes - - - - - Note payable and other borrowings - - - - - Interest rate swap agreements 14,293 14,293 - 14,293 - Interest payable on deposits and borrowings 3,066 3,066 - 3,066 - December 31, 2022 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 56,632 $ 56,632 $ 56,632 $ - $ - Interest earning deposits with financial institutions 58,545 58,545 58,545 - - Securities available-for-sale 1,539,359 1,539,359 212,129 1,291,219 36,011 FHLBC and FRBC stock 20,530 20,530 - 20,530 - Loans held-for-sale 491 491 - 491 - Net loans 3,820,129 3,681,387 - - 3,681,387 Mortgage servicing rights 11,189 11,189 - - 11,189 Interest rate swap agreements 6,391 6,391 - 6,391 - Interest rate lock commitments and forward contracts 76 76 - 76 - Interest receivable on securities and loans 22,661 22,661 - 22,661 - Financial liabilities: Noninterest bearing deposits $ 2,051,702 $ 2,051,702 $ 2,051,702 $ - $ - Interest bearing deposits 3,059,021 3,042,740 - 3,042,740 - Securities sold under repurchase agreements 32,156 32,156 - 32,156 - Other short-term borrowings 90,000 90,000 - 90,000 - Junior subordinated debentures 25,773 21,907 - 21,907 - Subordinated debentures 59,297 52,322 - 52,322 - Senior notes 44,585 44,248 44,248 - - Note payable and other borrowings 9,000 8,984 - 8,984 - Interest rate swap agreements 12,264 12,264 - 12,264 - Interest payable on deposits and borrowings 1,657 1,657 - 1,657 -

Derivatives, Hedging Activities

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk	9 Months Ended
	Sep. 30, 2023
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk	Note 13 – Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk Risk Management Objective of Using Derivatives The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments 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. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s loan portfolio. Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest income and expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. The aggregate fair value of the swaps is recorded in other assets or other liabilities with changes in fair value recorded in other comprehensive income, net of tax. The amount included in other comprehensive income would be reclassified to current earnings should all or a portion of the hedge no longer be considered effective. For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest income or interest expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest income or expense as interest payments are received on the variable rate loan pools or paid on the Company’s fixed-rate borrowings. Interest rate swaps with notional amounts totaling $300.0 million and $250.0 million as of September 30, 2023 and December 31, 2022, respectively, were designated as cash flow hedges of certain variable rate commercial and commercial real estate loan pools. Each of these hedges were executed to pay variable and receive fixed rate cash flows. Each of these hedges was determined to be effective during all periods presented and the Company expects the hedges to remain effective during the remaining terms of the swaps. An interest rate swap with a notional amount of $25.8 million as of September 30, 2023 and December 31, 2022, is designated as a cash flow hedge of junior subordinated debentures and was executed to pay fixed and receive variable rate cash flows. The hedge was determined to be effective during all periods presented and the Company expects the hedge to remain effective during the remaining terms of the swap. During the next twelve months, the Company estimates that an additional $7.0 million will be reclassified as an increase to interest income and an additional $708,000 will be reclassified as an increase to interest expense. Non-designated Hedges Derivatives not designated as hedges are not speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. The notional amounts of interest rate swaps with its loan customers as of September 30, 2023 and December 31, 2022 were $105.6 million and $110.6 million, respectively. 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. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. At September 30, 2023 and December 31, 2022, the Company had $9.2 million and $11.2 million of cash collateral pledged with two correspondent financial institutions, respectively. The Company held $8.1 million and $5.3 million of cash pledged from one correspondent financial institution to support the interest rate swap activity during the years presented, respectively. No investment securities were required to be pledged to any correspondent financial institution during 2023 through September 30, 2023, or during 2022. The Company offsets derivative assets and liabilities that are subject to a master netting arrangement. The Company also grants mortgage loan interest rate lock commitments to borrowers, subject to normal loan underwriting standards. The interest rate risk associated with these loan interest rate lock commitments is managed with contracts for future deliveries of loans as well as selling forward mortgage-backed securities contracts. Loan interest rate lock commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The notional amount of these commitments at September 30, 2023 and December 31, 2022 was $7.6 million and $5.3 million, respectively. Commitments to originate residential mortgage loans held-for-sale and forward commitments to sell residential mortgage loans or forward MBS contracts are considered derivative instruments and changes in the fair value are recorded to mortgage banking revenue. Fair values are estimated based on observable changes in mortgage interest rates including mortgage-backed securities prices from the date of the commitment. The table below presents the fair value of the Company’s derivative financial instruments as well as their classification on the Balance Sheets as of September 30, 2023 and December 31, 2022. Fair Value of Derivative Instruments September 30, 2023 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swap agreements 5 325,774 Other Assets 4,517 Other Liabilities 9,830 Total derivatives designated as hedging instruments 4,517 9,830 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 17 105,558 Other Assets 4,463 Other Liabilities 4,463 Interest rate lock commitments and forward contracts 28 7,613 Other Assets 37 Other Liabilities - Other contracts 4 44,892 Other Assets 48 Other Liabilities - Total derivatives not designated as hedging instruments 4,548 4,463 December 31, 2022 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swap agreements 4 275,774 Other Assets 2,737 Other Liabilities 8,610 Total derivatives designated as hedging instruments 2,737 8,610 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 21 110,647 Other Assets 3,654 Other Liabilities 3,654 Interest rate lock commitments and forward contracts 28 5,298 Other Assets 76 Other Liabilities - Other contracts 4 43,699 Other Assets 125 Other Liabilities 1 Total derivatives not designated as hedging instruments 3,855 3,655 Disclosure of the Effect of Fair Value and Cash Flow Hedge Accounting The fair value and cash flow hedge accounting related to derivatives covered under ASC Subtopic 815-20 impacted Accumulated Other Comprehensive Income (“AOCI”) and the Income Statement. The loss recognized in AOCI on derivatives totaled $3.8 million as of September 30, 2023, and $4.1 million as of September 30, 2022. The amount of the loss reclassified from AOCI to net interest income on the income statement was $3.9 million for the nine months ended September 30, 2023 and $15,000 of gain for the nine months ended September 30, 2022. Credit-risk-related Contingent Features For derivative transactions involving counterparties who are lending customers of the Company, the derivative credit exposure is managed through the normal credit review and monitoring process, which may include collateralization, financial covenants and/or financial guarantees of affiliated parties. Agreements with such customers require that losses associated with derivative transactions receive payment priority from any funds recovered should a customer default and ultimate disposition of collateral or guarantees occur. Credit exposure to broker/dealer counterparties is managed through agreements with each derivative counterparty that require collateralization of fair value gains owed by such counterparties. Some small degree of credit exposure exists due to timing differences between when a gain may occur and the subsequent point in time that collateral is delivered to secure that gain. This is monitored by the Company and procedures are in place to minimize this exposure. Such agreements also require the Company to collateralize counterparties in circumstances wherein the fair value of the derivatives result in loss to the Company. Other provisions of such agreements include the definition of certain events that may lead to the declaration of default and/or the early termination of the derivative transaction(s): ● If the Company either defaults or is capable of being declared in default on any of its indebtedness (exclusive of deposit obligations), then the Company could also be declared in default on its derivative obligations. ● If a merger occurs that materially changes the Company's creditworthiness in an adverse manner. ● If certain specified adverse regulatory actions occur, such as the issuance of a Cease and Desist Order, or citations for actions considered Unsafe and Unsound or that may lead to the termination of deposit insurance coverage by the FDIC. The Bank also issues letters of credit, which are conditional commitments that guarantee the performance of a customer to a third party. The credit risk involved and collateral obtained in issuing letters of credit are essentially the same as that involved in extending loan commitments to our customers. In addition to customer related commitments, the Company is responsible for letters of credit commitments that relate to properties held in OREO. The following table represents the Company’s contractual commitments due to letters of credit as of September 30, 2023, and December 31, 2022. The following table is a summary of letter of credit commitments: September 30, 2023 December 31, 2022 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 173 $ 16,543 $ 16,716 $ 3,514 $ 15,365 $ 18,879 Performance standby 353 15,733 16,086 3,161 13,989 17,150 526 32,276 32,802 6,675 29,354 36,029 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 526 $ 32,343 $ 32,869 $ 6,675 $ 29,421 $ 36,096 Unused loan commitments: $ 146,201 $ 710,271 $ 856,472 $ 139,070 $ 860,255 $ 999,325 As of September 30, 2023, the Company evaluated current market conditions, including any impacts related to market interest rate changes and unused line of credit utilization trends during the second quarter of 2023, and based on that analysis under the CECL methodology, the Company determined credit losses related to unfunded commitments totaled $2.7 million, excluding a $149,000 purchase accounting adjustment on unfunded commitments recorded from our West Suburban acquisition, which is being accreted to interest income over the estimated life of the unused commitments. The resultant decrease in the ACL for unfunded commitments of $235,000 for the third quarter of 2023, compared to the prior quarter end, is primarily related to a $223,000 decrease by accretion to interest income of the purchase accounting adjustment, as well as adjustments to historical benchmark assumptions, such as the funding rates and the period used to forecast those rates within the ACL calculation, resulting in a $12,000 reduction. The Company will continue to assess the credit risk at least quarterly, and adjust the allowance for unfunded commitments, which is carried within other liabilities on our Consolidated Balance Sheets, as needed, with the appropriate offsetting entry to the provision for credit losses on our Consolidated Statements of Income.

Basis of Presentation and Cha_2

Basis of Presentation and Changes in Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Basis of Presentation and Changes in Significant Accounting Policies
Recent Accounting Pronouncements	Recent Accounting Pronouncements The following is a summary of recent accounting pronouncements that have impacted or could potentially affect the Company : ASU 2018-16, ASU 2020-04, ASU 2021-01, and ASU 2022-06 Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting. Reference Rate Reform The Company formed a LIBOR transition team in 2019 and developed a project plan to assess the use of alternative indexes and to seek to ensure all financial instruments that reference LIBOR are identified, quantified, and researched for the LIBOR fallback language available or needed. The Company completed the ISDA protocol adherence for LIBOR fallback language for all commercial swaps, met with its commercial loan clients to also guide their swap fallback language adherence, and worked to revise all credit documents being issued by Old Second National Bank (the “Bank”) for new loans to ensure appropriate fallback language was included. We discontinued the use of LIBOR as a reference rate for all consumer loans issued after July 31, 2021, and all commercial loans issued after December 31, 2021, with certain exceptions for those loans that were in the process of funding at the end of 2021. The Company’s systems were updated to handle multiple SOFR-based indexes and we planned accordingly for the transition of existing LIBOR exposures as the final LIBOR cessation date was June 30, 2023. As of September 30, 2023, the Company’s LIBOR transition processes were determined to be completed and alternative index rates are in place. ASU 2022-01 Derivatives and Hedging (Topic 815): Fair Value Hedging – Portfolio Layer Method ASU 2022-02 Financial Instruments-Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures
Subsequent Events	Subsequent Events On October 17, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on November 6, 2023, to stockholders of record as of October 27, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on November 6, 2023.

Securities (Tables)

Securities (Tables)	9 Months Ended
Securities (Tables)	Sep. 30, 2023
Securities
Schedule of amortized cost and fair value of the securities portfolio and corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive loss	Gross Gross Amortized Unrealized Unrealized Fair September 30, 2023 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,481 $ - $ (7,704) $ 216,777 U.S. government agencies 60,197 - (4,376) 55,821 U.S. government agencies mortgage-backed 122,653 - (18,084) 104,569 States and political subdivisions 240,107 142 (20,149) 220,100 Corporate bonds 5,000 - (39) 4,961 Collateralized mortgage obligations 450,470 54 (63,845) 386,679 Asset-backed securities 71,241 - (4,325) 66,916 Collateralized loan obligations 175,995 10 (2,210) 173,795 Total securities available-for-sale $ 1,350,144 $ 206 $ (120,732) $ 1,229,618 Gross Gross Amortized Unrealized Unrealized Fair December 31, 2022 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,054 $ - $ (11,925) $ 212,129 U.S. government agencies 61,178 - (5,130) 56,048 U.S. government agencies mortgage-backed 140,588 - (15,598) 124,990 States and political subdivisions 239,999 363 (14,234) 226,128 Corporate bonds 10,000 - (378) 9,622 Collateralized mortgage obligations 596,336 1 (62,569) 533,768 Asset-backed securities 210,388 6 (8,466) 201,928 Collateralized loan obligations 180,276 - (5,530) 174,746 Total securities available-for-sale $ 1,662,819 $ 370 $ (123,830) $ 1,539,359 1 Excludes accrued interest receivable of $6.7 million and $6.8 million at September 30, 2023 and December 31, 2022, respectively, that is recorded in other assets on the consolidated balance sheets.
Schedule of fair value, amortized cost and weighted average yield of debt securities by contractual maturity along with securities not due at a single maturity date, primarily mortgage-backed securities (MBS), asset-backed securities, and collateralized loan obligations	Weighted Amortized Average Fair Securities available-for-sale Cost Yield Value Due in one year or less $ 49,989 0.64 % $ 49,804 Due after one year through five years 253,955 1.17 241,430 Due after five years through ten years 60,975 2.92 53,882 Due after ten years 164,866 3.11 152,543 529,785 1.92 497,659 Mortgage-backed and collateralized mortgage obligations 573,123 2.29 491,248 Asset-backed securities 71,241 4.24 66,916 Collateralized loan obligations 175,995 7.21 173,795 Total securities available-for-sale $ 1,350,144 3.00 % $ 1,229,618
Schedule of securities with unrealized losses aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position	Less than 12 months 12 months or more September 30, 2023 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries - $ - $ - 5 $ 7,704 $ 216,777 5 $ 7,704 $ 216,777 U.S. government agencies - - - 9 4,376 55,821 9 4,376 55,821 U.S. government agencies mortgage-backed - - - 128 18,084 104,569 128 18,084 104,569 States and political subdivisions 44 3,232 110,511 30 16,917 104,582 74 20,149 215,093 Corporate bonds - - - 1 39 4,961 1 39 4,961 Collateralized mortgage obligations 2 14 756 146 63,831 379,159 148 63,845 379,915 Asset-backed securities - - - 19 4,325 66,916 19 4,325 66,916 Collateralized loan obligations - - - 33 2,210 170,803 33 2,210 170,803 Total securities available-for-sale 46 $ 3,246 $ 111,267 371 $ 117,486 $ 1,103,588 417 $ 120,732 $ 1,214,855 Less than 12 months 12 months or more December 31, 2022 in an unrealized loss position in an unrealized loss position Total Number of Unrealized Fair Number of Unrealized Fair Number of Unrealized Fair Securities available-for-sale Securities Losses Value Securities Losses Value Securities Losses Value U.S. Treasuries 1 $ 1,025 $ 24,121 4 $ 10,900 $ 188,008 5 $ 11,925 $ 212,129 U.S. government agencies - - - 9 5,130 56,048 9 5,130 56,048 U.S. government agencies mortgage-backed 15 975 11,369 117 14,623 113,621 132 15,598 124,990 States and political subdivisions 45 5,800 128,770 15 8,434 48,877 60 14,234 177,647 Corporate bonds - - - 2 378 9,622 2 378 9,622 Collateralized mortgage obligations 80 12,895 180,624 120 49,674 348,880 200 62,569 529,504 Asset-backed securities 30 3,030 121,915 21 5,436 79,659 51 8,466 201,574 Collateralized loan obligations 23 3,579 112,772 11 1,951 61,974 34 5,530 174,746 Total securities available-for-sale 194 $ 27,304 $ 579,571 299 $ 96,526 $ 906,689 493 $ 123,830 $ 1,486,260
Schedule of proceeds from sale and gross realized gains and losses on sale of securities	Three Months Ended Nine Months Ended September 30, September 30, Securities available-for-sale 2023 2022 2023 2022 Proceeds from sales of securities $ 65,572 $ - $ 205,738 $ 3,303 Gross realized losses on securities (924) (1) (4,146) (34) Net realized losses $ (924) $ (1) $ (4,146) $ (34) Income tax benefit on net realized losses $ 260 $ 1 $ 1,165 $ 10 Effective tax rate applied 28.1 % N/M 28.1 % 29.4 %

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses on Loans (Tables)	9 Months Ended
Loans and Allowance for Credit Losses on Loans (Tables)	Sep. 30, 2023
Loans and Allowance for Credit Losses on Loans
Schedule of major classifications of loans	September 30, 2023 December 31, 2022 Commercial $ 834,877 $ 840,964 Leases 354,827 277,385 Commercial real estate – investor 1,047,122 987,635 Commercial real estate – owner occupied 809,050 854,879 Construction 202,546 180,535 Residential real estate – investor 53,762 57,353 Residential real estate – owner occupied 227,446 219,718 Multifamily 372,020 323,691 HELOC 102,055 109,202 Other 1 25,838 18,247 Total loans 4,029,543 3,869,609 Allowance for credit losses on loans (51,729) (49,480) Net loans 2 $ 3,977,814 $ 3,820,129 1 The “Other” segment includes consumer loans and overdrafts in this table and in subsequent tables within Note 4 – Loans and Allowance for Credit Losses on Loans. 2 Excludes accrued interest receivable of $19.2 million and $15.9 million at September 30, 2023 and December 31, 2022, respectively, that is recorded in other assets on the consolidated balance sheets.
Schedule of changes in the allowance for loan losses by segment of loans based on method of impairment	Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended September 30, 2023 Commercial $ 11,532 $ (1,025) $ 20 $ 12 $ 10,499 Leases 2,690 (193) - 95 2,592 Commercial real estate – investor 20,031 4,726 6,774 20 18,003 Commercial real estate – owner occupied 12,562 (154) 35 12 12,385 Construction 1,179 (39) - 100 1,240 Residential real estate – investor 743 (55) - 3 691 Residential real estate – owner occupied 1,868 (36) - 25 1,857 Multifamily 2,737 (165) - - 2,572 HELOC 1,694 (77) - 35 1,652 Other 278 30 107 37 238 Total $ 55,314 $ 3,012 $ 6,936 $ 339 $ 51,729 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Nine months ended September 30, 2023 Commercial $ 11,968 $ (1,287) $ 427 $ 245 $ 10,499 Leases 2,865 498 882 111 2,592 Commercial real estate – investor 10,674 14,117 6,845 57 18,003 Commercial real estate – owner occupied 15,001 (2,397) 236 17 12,385 Construction 1,546 (406) - 100 1,240 Residential real estate – investor 768 (104) - 27 691 Residential real estate – owner occupied 2,046 (260) - 71 1,857 Multifamily 2,453 119 - - 2,572 HELOC 1,806 (242) - 88 1,652 Other 353 53 301 133 238 Total $ 49,480 $ 10,091 $ 8,691 $ 849 $ 51,729 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended September 30, 2022 Commercial $ 14,114 $ (919) $ 67 $ 47 $ 13,175 Leases 1,736 (24) 178 - 1,534 Commercial real estate – investor 9,436 256 124 19 9,587 Commercial real estate – owner occupied 11,478 3,618 12 87 15,171 Construction 1,535 9 - - 1,544 Residential real estate – investor 661 147 - 8 816 Residential real estate – owner occupied 1,869 149 - 113 2,131 Multifamily 2,434 33 - 63 2,530 HELOC 1,542 386 - 35 1,963 Other 583 (128) 103 44 396 Total $ 45,388 $ 3,527 $ 484 $ 416 $ 48,847 Provision for Allowance for credit losses Beginning (Release of) Ending Nine months ended September 30, 2022 Balance Credit Losses Charge-offs Recoveries Balance Commercial $ 11,751 $ 1,488 $ 149 $ 85 $ 13,175 Leases 3,480 (1,768) 178 - 1,534 Commercial real estate – investor 10,795 (664) 604 60 9,587 Commercial real estate – owner occupied 4,913 10,289 133 102 15,171 Construction 3,373 (1,829) - - 1,544 Residential real estate – investor 760 33 - 23 816 Residential real estate – owner occupied 2,832 (919) - 218 2,131 Multifamily 3,675 (1,208) - 63 2,530 HELOC 2,510 (649) - 102 1,963 Other 192 404 320 120 396 Total $ 44,281 $ 5,177 $ 1,384 $ 773 $ 48,847
Schedule of collateral dependent loans and related loan allowances.	Accounts ACL September 30, 2023 Real Estate Receivable Equipment Other Total Allocation Commercial $ 849 $ 679 $ - $ - $ 1,528 $ 2 Leases - - 339 - 339 339 Commercial real estate – investor 26,724 - - - 26,724 4,848 Commercial real estate – owner occupied 17,636 - - - 17,636 4,201 Construction 7,206 - - - 7,206 - Residential real estate – investor 32 - - - 32 - Residential real estate – owner occupied 1,679 - - - 1,679 - Multifamily 568 - - - 568 - HELOC 39 - - - 39 - Total $ 54,733 $ 679 $ 339 $ - $ 55,751 $ 9,390 Accounts ACL December 31, 2022 Real Estate Receivable Equipment Other Total Allocation Commercial $ 883 $ 5,915 $ - $ 364 $ 7,162 $ 569 Leases - - 1,248 - 1,248 1,248 Commercial real estate – investor 16,576 - - - 16,576 2,875 Commercial real estate – owner occupied 19,188 - - 2,310 21,498 5,808 Residential real estate – investor 675 - - - 675 - Residential real estate – owner occupied 1,817 - - - 1,817 244 Multifamily 1,322 - - - 1,322 - HELOC 180 - - - 180 - Total $ 40,641 $ 5,915 $ 1,248 $ 2,674 $ 50,478 $ 10,744
Schedule of aged analysis of past due loans by class of loans	90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and September 30, 2023 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ 1,829 $ 1,874 $ 1,052 $ 4,755 $ 830,122 $ 834,877 $ 979 Leases 2,502 - 157 2,659 352,168 354,827 - Commercial real estate – investor 2,205 16,728 16,116 35,049 1,012,073 1,047,122 - Commercial real estate – owner occupied 15,232 120 1,879 17,231 791,819 809,050 - Construction 118 200 7,206 7,524 195,022 202,546 - Residential real estate – investor 252 - 277 529 53,233 53,762 140 Residential real estate – owner occupied 735 419 1,820 2,974 224,472 227,446 - Multifamily 713 127 - 840 371,180 372,020 - HELOC 646 88 259 993 101,062 102,055 90 Other - - - - 25,838 25,838 - Total $ 24,232 $ 19,556 $ 28,766 $ 72,554 $ 3,956,989 $ 4,029,543 $ 1,209 90 days or 90 Days or Greater Past 30-59 Days 60-89 Days Greater Past Total Past Due and December 31, 2022 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ 3 $ 1,012 $ 825 $ 1,840 $ 839,124 $ 840,964 $ 460 Leases 447 22 614 1,083 276,302 277,385 - Commercial real estate – investor 3,276 1,276 4,315 8,867 978,768 987,635 - Commercial real estate – owner occupied 373 113 2,211 2,697 852,182 854,879 173 Construction 14 - 116 130 180,405 180,535 - Residential real estate – investor 445 - 987 1,432 55,921 57,353 144 Residential real estate – owner occupied 1,191 - 2,232 3,423 216,295 219,718 485 Multifamily 267 361 1,322 1,950 321,741 323,691 - HELOC 291 90 392 773 108,429 109,202 - Other 19 - - 19 18,228 18,247 - Total $ 6,326 $ 2,874 $ 13,014 $ 22,214 $ 3,847,395 $ 3,869,609 $ 1,262
Schedule of loans on nonaccrual for which there was no related allowance	Nonaccrual loan detail September 30, 2023 With no ACL December 31, 2022 With no ACL Commercial $ 2,167 $ 2,167 $ 7,189 $ 6,598 Leases 377 38 1,876 - Commercial real estate – investor 26,724 11,786 4,346 4,244 Commercial real estate – owner occupied 18,290 3,833 8,050 3,813 Construction 7,206 7,206 251 - Residential real estate – investor 1,362 1,362 1,528 675 Residential real estate – owner occupied 3,627 3,627 3,713 1,572 Multifamily 1,141 1,141 2,538 1,322 HELOC 1,222 1,222 2,109 180 Other - - 2 - Total $ 62,116 $ 32,382 $ 31,602 $ 18,404
Schedule of credit quality indicators by class of loans	Credit quality indicators by loan segment and loan origination date at September 30, 2023 were as follows: 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 215,492 $ 187,682 $ 41,464 $ 13,359 $ 10,676 $ 4,315 $ 311,562 $ 1,379 $ 785,929 Special Mention - 500 244 - 51 - 29,855 - 30,650 Substandard - 79 1,381 2,735 9,689 - 4,414 - 18,298 Total commercial 215,492 188,261 43,089 16,094 20,416 4,315 345,831 1,379 834,877 Leases Pass 151,691 125,092 $ 47,808 17,522 9,545 2,595 - - 354,253 Special Mention - - - - - - - - - Substandard - 339 - - 235 - - - 574 Total leases 151,691 125,431 47,808 17,522 9,780 2,595 - - 354,827 Commercial real estate – investor Pass 176,779 341,597 203,972 111,333 59,770 67,264 8,148 - 968,863 Special Mention - 12,866 11,267 - - - - - 24,133 Substandard 10,964 11,787 1,950 7,748 9,278 - 12,399 - 54,126 Total commercial real estate – investor 187,743 366,250 217,189 119,081 69,048 67,264 20,547 - 1,047,122 Commercial real estate – owner occupied Pass 105,963 139,223 181,543 78,750 54,909 101,396 33,258 - 695,042 Special Mention 1,758 11,722 18,180 26,480 222 354 - - 58,716 Substandard - 14,994 19,926 1,142 18,811 419 - - 55,292 Total commercial real estate – owner occupied 107,721 165,939 219,649 106,372 73,942 102,169 33,258 - 809,050 Construction Pass 26,529 75,698 56,217 19,531 1,837 1,155 3,699 - 184,666 Special Mention 305 312 - - - - - - 617 Substandard - 7,206 - 10,057 - - - - 17,263 Total construction 26,834 83,216 56,217 29,588 1,837 1,155 3,699 - 202,546 Residential real estate – investor Pass 3,310 14,560 8,954 6,317 7,116 10,519 1,417 - 52,193 Special Mention - - 67 - - - - - 67 Substandard - 398 - - 418 686 - - 1,502 Total residential real estate – investor 3,310 14,958 9,021 6,317 7,534 11,205 1,417 - 53,762 Residential real estate – owner occupied Pass 26,371 41,915 41,439 26,544 15,147 71,637 766 - 223,819 Special Mention - - - - - - - - - Substandard - 122 - 90 686 2,729 - - 3,627 Total residential real estate – owner occupied 26,371 42,037 41,439 26,634 15,833 74,366 766 - 227,446 Multifamily Pass 69,947 79,689 101,878 57,792 12,391 42,603 382 - 364,682 Special Mention - 170 3,505 326 1,656 540 - - 6,197 Substandard - 887 - - - 254 - - 1,141 Total multifamily 69,947 80,746 105,383 58,118 14,047 43,397 382 - 372,020 HELOC Pass 1,765 2,760 211 1,443 1,631 2,494 90,317 - 100,621 Special Mention - - - - - - - - - Substandard 39 27 1 1 - 106 1,260 - 1,434 Total HELOC 1,804 2,787 212 1,444 1,631 2,600 91,577 - 102,055 Other Pass 4,461 2,068 1,415 223 151 88 17,432 25,838 Special Mention - - - - - - - - Substandard - - - - - - - - Total other 4,461 2,068 1,415 223 151 88 17,432 - 25,838 Total loans Pass 782,308 1,010,284 684,901 332,814 173,173 304,066 466,981 1,379 3,755,906 Special Mention 2,063 25,570 33,263 26,806 1,929 894 29,855 - 120,380 Substandard 11,003 35,839 23,258 21,773 39,117 4,194 18,073 - 153,257 Total loans $ 795,374 $ 1,071,693 $ 741,422 $ 381,393 $ 214,219 $ 309,154 $ 514,909 $ 1,379 $ 4,029,543 Credit quality indicators by loan segment and loan origination date at December 31, 2022, were as follows: 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 225,056 $ 70,608 $ 21,597 $ 12,742 $ 6,957 $ 2,651 $ 447,821 $ - $ 787,432 Special Mention 1,875 272 1,182 2,432 - - 21,286 - 27,047 Substandard 4,958 2,447 2,981 12,176 7 - 3,916 - 26,485 Total commercial 231,889 73,327 25,760 27,350 6,964 2,651 473,023 - 840,964 Leases Pass 161,379 64,203 $ 26,995 17,653 4,449 830 - - 275,509 Special Mention - - - - - - - - - Substandard 1,606 - - 270 - - - - 1,876 Total leases 162,985 64,203 26,995 17,923 4,449 830 - - 277,385 Commercial real estate – investor Pass 416,094 228,686 118,491 63,845 46,935 46,406 7,113 - 927,570 Special Mention 5,349 1,417 5,490 10,206 1,070 9,123 - - 32,655 Substandard 12,332 2,018 - 10,763 - 2,297 - - 27,410 Total commercial real estate – investor 433,775 232,121 123,981 84,814 48,005 57,826 7,113 - 987,635 Commercial real estate – owner occupied Pass 169,703 223,731 105,669 47,351 49,367 86,660 33,745 - 716,226 Special Mention 8,430 22,242 48,184 17,668 231 1,008 - - 97,763 Substandard 2,546 17,129 1,191 16,962 - 3,062 - - 40,890 Total commercial real estate – owner occupied 180,679 263,102 155,044 81,981 49,598 90,730 33,745 - 854,879 Construction Pass 53,058 65,758 39,542 2,390 226 1,408 1,523 - 163,905 Special Mention - - 15,297 - - - - - 15,297 Substandard 1,217 - - 116 - - - - 1,333 Total construction 54,275 65,758 54,839 2,506 226 1,408 1,523 - 180,535 Residential real estate – investor Pass 14,737 9,910 6,945 8,585 4,853 9,548 991 - 55,569 Special Mention - 70 - - - - - - 70 Substandard 621 - - 499 186 408 - - 1,714 Total residential real estate – investor 15,358 9,980 6,945 9,084 5,039 9,956 991 - 57,353 Residential real estate – owner occupied Pass 41,885 44,884 28,418 16,146 12,152 70,741 1,638 - 215,864 Special Mention - - - - - - - - - Substandard 131 267 237 723 131 2,365 - - 3,854 Total residential real estate – owner occupied 42,016 45,151 28,655 16,869 12,283 73,106 1,638 - 219,718 Multifamily Pass 76,877 126,257 52,262 13,125 39,703 6,098 329 - 314,651 Special Mention 377 3,683 342 1,684 - - - - 6,086 Substandard 2,100 - - - 587 267 - - 2,954 Total multifamily 79,354 129,940 52,604 14,809 40,290 6,365 329 - 323,691 HELOC Pass 2,760 517 1,497 1,703 657 2,288 97,258 - 106,680 Special Mention - - - - - - 111 - 111 Substandard 62 1 - - 67 309 1,972 - 2,411 Total HELOC 2,822 518 1,497 1,703 724 2,597 99,341 - 109,202 Other Pass 4,195 2,835 432 167 69 111 10,436 - 18,245 Special Mention - - - - - - - - - Substandard - - 1 - - - 1 - 2 Total other 4,195 2,835 433 167 69 111 10,437 - 18,247 Total loans Pass 1,165,744 837,389 401,848 183,707 165,368 226,741 600,854 - 3,581,651 Special Mention 16,031 27,684 70,495 31,990 1,301 10,131 21,397 - 179,029 Substandard 25,573 21,862 4,410 41,509 978 8,708 5,889 - 108,929 Total loans $ 1,207,348 $ 886,935 $ 476,753 $ 257,206 $ 167,647 $ 245,580 $ 628,140 $ - $ 3,869,609
Schedule of gross charge-offs	Current period gross charge-offs 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted to Term Loans Total Commercial $ - - 17 364 - 46 $ - $ - $ 427 Leases - 870 - - 12 - - - 882 Commercial real estate – investor - 4,121 71 2,653 - - - - 6,845 Commercial real estate – owner occupied - 22 178 4 - 32 - - 236 Construction - - - - - - - - - Residential real estate – investor - - - - - - - - - Residential real estate – owner occupied - - - - - - - - - Multifamily - - - - - - - - - HELOC - - - - - - - - - Other - 3 26 7 - 265 - - 301 Total $ - $ 5,016 $ 292 $ 3,028 $ 12 $ 343 - - $ 8,691
Schedule of class of financing receivable	September 30, 2023 Term Extension Combination - Term Extension and Interest Rate Reduction Combination - Term Extension and Payment Delay Total Loans Modified % of Total Loan Segment Modified to Total Loan Segment Commercial $ 1,713 $ 979 $ - $ 2,692 0.3% Commercial real estate – investor 12,755 - 10,608 23,363 2.2% Commercial real estate – owner occupied 16,218 - - 16,218 2.0% Residential real estate – owner occupied 437 - - 437 0.2% Multifamily 254 - - 254 0.1% HELOC 39 - - 39 0.0% Total $ 31,416 $ 979 $ 10,608 $ 43,003 1.1% September 30, 2023 30-59 days past due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loan Modified Commercial $ - $ - $ 979 $ 979 $ 1,713 $ 2,692 Commercial real estate – investor - - - - 23,363 23,363 Commercial real estate – owner occupied - - - - 16,218 16,218 Residential real estate – owner occupied - - - - 437 437 Multifamily - - - - 254 254 HELOC - - - - 39 39 Total $ - $ - $ 979 $ 979 $ 42,024 $ 43,003 September 30, 2023 Weighted-Average Term Extension (In Months) Weighted-Average Interest Rate Change Weighted-Average Delay of Payment (In Months) Commercial 6.74 5.00 % - Commercial real estate – investor 9.81 - 7.17 Commercial real estate – owner occupied 14.00 - - Residential real estate – owner occupied 2.00 - - Multifamily 16.00 - - HELOC 24.00 - - Total 11.17 5.00 % 7.17

Deposits (Tables)

Deposits (Tables)	9 Months Ended
Deposits (Tables)	Sep. 30, 2023
Deposits
Schedule of major classifications of deposits	September 30, 2023 December 31, 2022 Noninterest bearing demand $ 1,862,659 $ 2,051,702 Savings 1,003,498 1,145,592 NOW accounts 567,997 609,338 Money market accounts 702,176 862,170 Certificates of deposit of less than $100,000 248,272 244,017 Certificates of deposit of $100,000 through $250,000 162,901 157,438 Certificates of deposit of more than $250,000 66,817 40,466 Total deposits $ 4,614,320 $ 5,110,723

Borrowings (Tables)

Borrowings (Tables)	9 Months Ended
Borrowings (Tables)	Sep. 30, 2023
Borrowings
Summary of borrowings and junior subordinated debentures	September 30, 2023 December 31, 2022 Securities sold under repurchase agreements $ 25,894 $ 32,156 Other short-term borrowings 435,000 90,000 Junior subordinated debentures 1 25,773 25,773 Subordinated debentures 59,361 59,297 Senior notes - 44,585 Notes payable and other borrowings - 9,000 Total borrowings $ 546,028 $ 260,811 1 See Note 7: Junior Subordinated Debentures

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	9 Months Ended
Equity Compensation Plans (Tables)	Sep. 30, 2023
Equity Compensation Plans
Summary of changes in nonvested shares of restricted share rights	September 30, 2023 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 649,210 $ 12.84 Granted 240,149 17.02 Vested (137,534) 12.53 Forfeited (15,191) 14.25 Unvested at September 30 736,634 $ 14.23

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
Earnings Per Share (Tables)	Sep. 30, 2023
Earnings Per Share
Schedule of Earnings Per Share	Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Basic earnings per share: Weighted-average common shares outstanding 44,675,489 44,565,626 44,653,451 44,509,072 Net income $ 24,335 $ 19,523 $ 73,504 $ 43,790 Basic earnings per share $ 0.55 $ 0.43 $ 1.65 $ 0.98 Diluted earnings per share: Weighted-average common shares outstanding 44,675,489 44,565,626 44,653,451 44,509,072 Dilutive effect of unvested restricted awards 1 752,920 655,915 736,767 698,920 Diluted average common shares outstanding 45,428,409 45,221,541 45,390,218 45,207,992 Net Income $ 24,335 $ 19,523 $ 73,504 $ 43,790 Diluted earnings per share $ 0.54 $ 0.43 $ 1.62 $ 0.97 1 Includes the common stock equivalents for restricted share rights that are dilutive.

Regulatory & Capital Matters (T

Regulatory & Capital Matters (Tables)	9 Months Ended
Regulatory & Capital Matters (Tables)	Sep. 30, 2023
Regulatory & Capital Matters
Schedule of capital levels and industry defined regulatory minimum required levels	Minimum Capital Well Capitalized Adequacy with Capital Under Prompt Corrective Actual Conservation Buffer, if applicable 1 Action Provisions 2 Amount Ratio Amount Ratio Amount Ratio September 30, 2023 Common equity tier 1 capital to risk weighted assets Consolidated $ 530,368 11.00 % $ 337,507 7.00 % N/A N/A Old Second Bank 601,999 12.49 337,389 7.00 $ 313,290 6.50 % Total capital to risk weighted assets Consolidated 667,182 13.84 506,171 10.50 N/A N/A Old Second Bank 653,813 13.57 505,898 10.50 481,808 10.00 Tier 1 capital to risk weighted assets Consolidated 555,368 11.52 409,777 8.50 N/A N/A Old Second Bank 601,999 12.49 409,687 8.50 385,588 8.00 Tier 1 capital to average assets Consolidated 555,368 9.62 230,922 4.00 N/A N/A Old Second Bank 601,999 10.43 230,872 4.00 288,590 5.00 December 31, 2022 Common equity tier 1 capital to risk weighted assets Consolidated $ 457,206 9.67 % $ 330,966 7.00 % N/A N/A Old Second Bank 552,404 11.70 330,498 7.00 $ 306,891 6.50 % Total capital to risk weighted assets Consolidated 592,039 12.52 496,518 10.50 N/A N/A Old Second Bank 602,237 12.75 495,960 10.50 472,343 10.00 Tier 1 capital to risk weighted assets Consolidated 482,206 10.20 401,838 8.50 N/A N/A Old Second Bank 552,404 11.70 401,319 8.50 377,712 8.00 Tier 1 capital to average assets Consolidated 482,206 8.14 236,956 4.00 N/A N/A Old Second Bank 552,404 9.32 237,083 4.00 296,354 5.00 1 Amounts are shown inclusive of a capital conservation buffer of 2.50%. 2 The prompt corrective action provisions are only applicable at the Bank level. The Bank exceeded the general minimum regulatory requirements to be considered “well capitalized.”

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
Fair Value Measurements (Tables)	Sep. 30, 2023
Fair Value Measurements
Schedule of balance of assets and liabilities which are measured at fair value on a recurring basis	September 30, 2023 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 216,777 $ - $ - $ 216,777 U.S. government agencies - 55,821 - 55,821 U.S. government agencies mortgage-backed - 104,569 - 104,569 States and political subdivisions - 206,034 14,066 220,100 Corporate bonds - 4,961 - 4,961 Collateralized mortgage obligations - 386,679 - 386,679 Asset-backed securities - 66,916 - 66,916 Collateralized loan obligations - 173,795 - 173,795 Loans held-for-sale - 2,297 - 2,297 Mortgage servicing rights - - 11,461 11,461 Interest rate swap agreements, including risk participation agreement - 9,028 - 9,028 Mortgage banking derivatives - 37 - 37 Total $ 216,777 $ 1,010,137 $ 25,527 $ 1,252,441 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 14,293 $ - $ 14,293 Total $ - $ 14,293 $ - $ 14,293 December 31, 2022 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 212,129 $ - $ - $ 212,129 U.S. government agencies - 56,048 - 56,048 U.S. government agencies mortgage-backed - 124,990 - 124,990 States and political subdivisions - 211,899 14,229 226,128 Corporate bonds - 9,622 - 9,622 Collateralized mortgage obligations - 526,998 6,770 533,768 Asset-backed securities - 186,916 15,012 201,928 Collateralized loan obligations - 174,746 - 174,746 Loans held-for-sale - 491 - 491 Mortgage servicing rights - - 11,189 11,189 Interest rate swap agreements - 6,516 - 6,516 Mortgage banking derivatives - 76 - 76 Total $ 212,129 $ 1,298,302 $ 47,200 $ 1,557,631 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 12,265 $ - $ 12,265 Total $ - $ 12,265 $ - $ 12,265
Schedule of changes in Level 3 assets and liabilities measured at fair value on a recurring basis	Nine Months Ended September 30, 2023 Securities available-for-sale Collateralized States and Mortgage Asset-backed Mortgage Political Servicing Securities Obligations Subdivisions Rights Beginning balance January 1, 2023 $ 15,012 $ 6,770 $ 14,229 $ 11,189 Transfers out of Level 3 (14,885) (6,764) - - Total gains or losses Included in earnings (11) - (99) 232 Included in other comprehensive income 226 (6) (132) - Purchases, issuances, sales, and settlements Purchases - - 406 - Issuances - - - 420 Settlements (342) - (338) (380) Ending balance September 30, 2023 $ - $ - $ 14,066 $ 11,461 Nine Months Ended September 30, 2022 Securities available-for-sale States and Mortgage Political Servicing Subdivisions Rights Beginning balance January 1, 2022 $ 15,236 $ 7,097 Total gains or losses Included in earnings (98) 4,384 Included in other comprehensive income (1,333) - Purchases, issuances, sales, and settlements Issuances 519 756 Settlements (1,015) (776) Ending balance September 30, 2022 $ 13,309 $ 11,461
Schedule of quantitative information about level 3 fair value measurements	The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as of September 30, 2023: Weighted Measured at fair value Significant Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs States and political subdivisions $ 14,066 Discounted Cash Flow Discount Rate 3.5 – 5.9% 4.3 % Liquidity Premium 0.3 – 0.5% 0.5 % Mortgage servicing rights $ 11,461 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 0.0 – 16.4% 6.2 % The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as December 31, 2022: Weighted Measured at fair value Significant Unobservable Average on a recurring basis: Fair Value Valuation Methodology Inputs Range of Input of Inputs States and political subdivisions $ 14,229 Discounted Cash Flow Discount Rate 2.3 – 5.8% 4.4 % Liquidity Premium 0.3 – 0.5% 0.5 % Collateralized mortgage obligations $ 6,770 Discounted Cash Flow Discount Rate 7.0 – 7.0% 7.0 % Asset-backed securities $ 15,012 Discounted Cash Flow Discount Rate 6.2 – 6.5% 6.3 % Mortgage servicing rights $ 11,189 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 3.6 – 27.3% 6.2 %
Schedule of assets measured at fair value on a nonrecurring basis	September 30, 2023 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 63,322 $ 63,322 Other real estate owned, net 2 - - 407 407 Total $ - $ - $ 63,729 $ 63,729 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans, which had a carrying amount of $82.0 million and a valuation allowance of $18.7 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $1.0 million for the nine months ended September 30, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $407,000 at September 30, 2023, which is made up of the outstanding balance of $525,000 , and a valuation allowance of $118,000 December 31, 2022 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 47,700 $ 47,700 Other real estate owned, net 2 - - 1,561 1,561 Total $ - $ - $ 49,261 $ 49,261 1 Represents carrying value and related write-downs of loans for which adjustments are substantially based on the appraised value of collateral for collateral-dependent loans, which had a carrying amount of $65.3 million and a valuation allowance of $17.6 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $12.2 million for the year December 31, 2022. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $1.6 million at December 31, 2022, which is made up of the outstanding balance of $2.5 million, net of a purchase accounting adjustment of $131,000 and a valuation allowance of $856,000 .

Fair Values of Financial Inst_2

Fair Values of Financial Instruments (Tables)	9 Months Ended
Fair Values of Financial Instruments (Tables)	Sep. 30, 2023
Fair Values of Financial Instruments
Schedule of carrying amount and estimated fair values of financial instruments	September 30, 2023 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 55,548 $ 55,548 $ 55,548 $ - $ - Interest earning deposits with financial institutions 53,485 53,485 53,485 - - Securities available-for-sale 1,229,618 1,229,618 216,777 998,775 14,066 FHLBC and FRBC stock 35,830 35,830 - 35,830 - Loans held-for-sale 2,297 2,297 - 2,297 - Net loans 3,977,814 3,855,774 - - 3,855,774 Mortgage servicing rights 11,641 11,641 - - 11,641 Interest rate swap agreements 8,980 8,980 - 8,980 - Interest rate lock commitments and forward contracts 37 37 - 37 - Interest receivable on securities and loans 25,921 25,921 - 25,921 - Financial liabilities: Noninterest bearing deposits $ 1,862,659 $ 1,862,659 $ 1,862,659 $ - $ - Interest bearing deposits 2,751,661 2,738,632 - 2,738,632 - Securities sold under repurchase agreements 25,894 25,894 - 25,894 - Other short-term borrowings 435,000 435,000 - 435,000 - Junior subordinated debentures 25,773 19,072 - 19,072 - Subordinated debentures 59,361 46,161 - 46,161 - Senior notes - - - - - Note payable and other borrowings - - - - - Interest rate swap agreements 14,293 14,293 - 14,293 - Interest payable on deposits and borrowings 3,066 3,066 - 3,066 - December 31, 2022 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 56,632 $ 56,632 $ 56,632 $ - $ - Interest earning deposits with financial institutions 58,545 58,545 58,545 - - Securities available-for-sale 1,539,359 1,539,359 212,129 1,291,219 36,011 FHLBC and FRBC stock 20,530 20,530 - 20,530 - Loans held-for-sale 491 491 - 491 - Net loans 3,820,129 3,681,387 - - 3,681,387 Mortgage servicing rights 11,189 11,189 - - 11,189 Interest rate swap agreements 6,391 6,391 - 6,391 - Interest rate lock commitments and forward contracts 76 76 - 76 - Interest receivable on securities and loans 22,661 22,661 - 22,661 - Financial liabilities: Noninterest bearing deposits $ 2,051,702 $ 2,051,702 $ 2,051,702 $ - $ - Interest bearing deposits 3,059,021 3,042,740 - 3,042,740 - Securities sold under repurchase agreements 32,156 32,156 - 32,156 - Other short-term borrowings 90,000 90,000 - 90,000 - Junior subordinated debentures 25,773 21,907 - 21,907 - Subordinated debentures 59,297 52,322 - 52,322 - Senior notes 44,585 44,248 44,248 - - Note payable and other borrowings 9,000 8,984 - 8,984 - Interest rate swap agreements 12,264 12,264 - 12,264 - Interest payable on deposits and borrowings 1,657 1,657 - 1,657 -

Derivatives, Hedging Activiti_2

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk (Tables)	9 Months Ended
	Sep. 30, 2023
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Schedule of fair value of derivative financial instruments as well as their classification on the Balance Sheet	September 30, 2023 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swap agreements 5 325,774 Other Assets 4,517 Other Liabilities 9,830 Total derivatives designated as hedging instruments 4,517 9,830 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 17 105,558 Other Assets 4,463 Other Liabilities 4,463 Interest rate lock commitments and forward contracts 28 7,613 Other Assets 37 Other Liabilities - Other contracts 4 44,892 Other Assets 48 Other Liabilities - Total derivatives not designated as hedging instruments 4,548 4,463 December 31, 2022 No. of Trans. Notional Amount $ Balance Sheet Location Fair Value $ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments Interest rate swap agreements 4 275,774 Other Assets 2,737 Other Liabilities 8,610 Total derivatives designated as hedging instruments 2,737 8,610 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 21 110,647 Other Assets 3,654 Other Liabilities 3,654 Interest rate lock commitments and forward contracts 28 5,298 Other Assets 76 Other Liabilities - Other contracts 4 43,699 Other Assets 125 Other Liabilities 1 Total derivatives not designated as hedging instruments 3,855 3,655
Schedule of financial instrument commitments	September 30, 2023 December 31, 2022 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 173 $ 16,543 $ 16,716 $ 3,514 $ 15,365 $ 18,879 Performance standby 353 15,733 16,086 3,161 13,989 17,150 526 32,276 32,802 6,675 29,354 36,029 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 526 $ 32,343 $ 32,869 $ 6,675 $ 29,421 $ 36,096 Unused loan commitments: $ 146,201 $ 710,271 $ 856,472 $ 139,070 $ 860,255 $ 999,325

Basis of Presentation and Cha_3

Basis of Presentation and Changes in Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Millions	Nov. 06, 2023	Oct. 17, 2023
Subsequent Events
Cash dividend declared (per share)		$ 0.05
Dividends paid	$ 2.2

Acquisition (Details)

Acquisition (Details) - USD ($)	Dec. 01, 2021	Sep. 30, 2023	Dec. 31, 2022
Liabilities
Goodwill		$ 86,478,000	$ 86,478,000
West Suburban acquired loans
Assets
Securities available-for-sale and held-to maturity, at fair value	$ 1,070,000,000
Loans, net of allowance for credit losses Day One PCD loan adjustment	1,500,000,000
Total assets	2,940,000,000
Liabilities
Total deposits	2,690,000,000
Cash consideration paid	100,700,000
Goodwill	$ 67,900,000
Shares issued or issuable	42.413
Cash consideration for each share	$ 271.15
Merger consideration	$ 295,200,000
Common stock shares issued	15,700,000

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($) item	Dec. 31, 2022 USD ($)
Securities Available-for-Sale
Amortized Cost	$ 1,350,144	$ 1,662,819
Gross Unrealized Gains	206	370
Gross Unrealized Losses	(120,732)	(123,830)
Securities available-for-sale	1,229,618	1,539,359
Accrued interest receivable	6,700	6,800
FHLB and FRB Stock
FHLBC stock	20,900	5,600
FRBC stock	14,900	14,900
Securities pledged to secure deposits and for other purposes	808,700	547,800
Other disclosures
Securities available-for-sale	$ 1,229,618	1,539,359
Number of securities issued from originators \| item	0
Number of originators \| item	1
Minimum percentage of securities investment	10%
U.S. Treasury
Securities Available-for-Sale
Amortized Cost	$ 224,481	224,054
Gross Unrealized Losses	(7,704)	(11,925)
Securities available-for-sale	216,777	212,129
Other disclosures
Securities available-for-sale	216,777	212,129
U.S. government agencies
Securities Available-for-Sale
Amortized Cost	60,197	61,178
Gross Unrealized Losses	(4,376)	(5,130)
Securities available-for-sale	55,821	56,048
Other disclosures
Securities available-for-sale	55,821	56,048
U.S. government agencies mortgage-backed
Securities Available-for-Sale
Amortized Cost	122,653	140,588
Gross Unrealized Losses	(18,084)	(15,598)
Securities available-for-sale	104,569	124,990
Other disclosures
Securities available-for-sale	104,569	124,990
States and political subdivisions
Securities Available-for-Sale
Amortized Cost	240,107	239,999
Gross Unrealized Gains	142	363
Gross Unrealized Losses	(20,149)	(14,234)
Securities available-for-sale	220,100	226,128
Other disclosures
Securities available-for-sale	220,100	226,128
Corporate bonds
Securities Available-for-Sale
Amortized Cost	5,000	10,000
Gross Unrealized Losses	(39)	(378)
Securities available-for-sale	4,961	9,622
Other disclosures
Securities available-for-sale	4,961	9,622
Collateralized mortgage obligations
Securities Available-for-Sale
Amortized Cost	450,470	596,336
Gross Unrealized Gains	54	1
Gross Unrealized Losses	(63,845)	(62,569)
Securities available-for-sale	386,679	533,768
Other disclosures
Securities available-for-sale	386,679	533,768
Asset-backed Securities
Securities Available-for-Sale
Amortized Cost	71,241	210,388
Gross Unrealized Gains		6
Gross Unrealized Losses	(4,325)	(8,466)
Securities available-for-sale	66,916	201,928
Other disclosures
Securities available-for-sale	66,916	201,928
Collateralized loan obligations.
Securities Available-for-Sale
Amortized Cost	175,995	180,276
Gross Unrealized Gains	10
Gross Unrealized Losses	(2,210)	(5,530)
Securities available-for-sale	173,795	174,746
Other disclosures
Securities available-for-sale	$ 173,795	$ 174,746

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 49,989
Due after one year through five years	253,955
Due after five years through ten years	60,975
Due after ten years	164,866
Debt securities excluding securities not due at a single maturity date	529,785
Total	$ 1,350,144	$ 1,662,819
Securities Available-for-Sale, Weighted Average Yield
Due in one year or less (as a percent)	0.64%
Due after one year through five years (as a percent)	1.17%
Due after five years through ten years (as a percent)	2.92%
Due after ten years (as a percent)	3.11%
Debt securities (as a percent)	1.92%
Total (as a percent)	3%
Securities Available-for-Sale, Fair Value
Due in one year or less	$ 49,804
Due after one year through five years	241,430
Due after five years through ten years	53,882
Due after ten years	152,543
Debt securities	497,659
Debt Securities, Available-for-sale, Total	1,229,618	1,539,359
Mortgage-backed and collateralized mortgage obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 573,123
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	2.29%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 491,248
Asset-backed Securities
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	71,241
Total	$ 71,241	210,388
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	4.24%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 66,916
Debt Securities, Available-for-sale, Total	66,916	201,928
Collateralized loan obligations.
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	175,995
Total	$ 175,995	180,276
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	7.21%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 173,795
Debt Securities, Available-for-sale, Total	$ 173,795	$ 174,746

Securities - Unrealized Loss Po

Securities - Unrealized Loss Positions (Details)	3 Months Ended	9 Months Ended
Securities - Unrealized Loss Positions (Details)	Sep. 30, 2023 USD ($) security	Sep. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	46	46	194
Greater than 12 months in an unrealized loss position \| security	371	371	299
Total	417	417	493
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 3,246,000	$ 3,246,000	$ 27,304,000
Greater than 12 months in an unrealized loss position	117,486,000	117,486,000	96,526,000
Total	120,732,000	120,732,000	123,830,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	111,267,000	111,267,000	579,571,000
Greater than 12 months in an unrealized loss position	1,103,588,000	1,103,588,000	906,689,000
Total	1,214,855,000	$ 1,214,855,000	1,486,260,000
Effective duration (in years)		3 years
Credit losses were determined	0	$ 0	$ 0
Provision for credit losses on securities	$ 0
U.S. Treasury
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security			1
Greater than 12 months in an unrealized loss position \| security	5	5	4
Total	5	5	5
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position			$ 1,025,000
Greater than 12 months in an unrealized loss position	$ 7,704,000	$ 7,704,000	10,900,000
Total	7,704,000	7,704,000	11,925,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position			24,121,000
Greater than 12 months in an unrealized loss position	216,777,000	216,777,000	188,008,000
Total	$ 216,777,000	$ 216,777,000	$ 212,129,000
U.S. government agencies
Securities Available-for-Sale, Number of Securities
Greater than 12 months in an unrealized loss position \| security	9	9	9
Total	9	9	9
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 4,376,000	$ 4,376,000	$ 5,130,000
Total	4,376,000	4,376,000	5,130,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	55,821,000	55,821,000	56,048,000
Total	$ 55,821,000	$ 55,821,000	$ 56,048,000
Mortgage Backed Securities, Issued by US Government Agencies
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security			15
Greater than 12 months in an unrealized loss position \| security	128	128	117
Total	128	128	132
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position			$ 975,000
Greater than 12 months in an unrealized loss position	$ 18,084,000	$ 18,084,000	14,623,000
Total	18,084,000	18,084,000	15,598,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position			11,369,000
Greater than 12 months in an unrealized loss position	104,569,000	104,569,000	113,621,000
Total	$ 104,569,000	$ 104,569,000	$ 124,990,000
States and political subdivisions
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	44	44	45
Greater than 12 months in an unrealized loss position \| security	30	30	15
Total	74	74	60
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 3,232,000	$ 3,232,000	$ 5,800,000
Greater than 12 months in an unrealized loss position	16,917,000	16,917,000	8,434,000
Total	20,149,000	20,149,000	14,234,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	110,511,000	110,511,000	128,770,000
Greater than 12 months in an unrealized loss position	104,582,000	104,582,000	48,877,000
Total	$ 215,093,000	$ 215,093,000	$ 177,647,000
Corporate bonds
Securities Available-for-Sale, Number of Securities
Greater than 12 months in an unrealized loss position \| security	1	1	2
Total	1	1	2
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 39,000	$ 39,000	$ 378,000
Total	39,000	39,000	378,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	4,961,000	4,961,000	9,622,000
Total	$ 4,961,000	$ 4,961,000	$ 9,622,000
Collateralized mortgage obligations
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	2	2	80
Greater than 12 months in an unrealized loss position \| security	146	146	120
Total	148	148	200
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 14,000	$ 14,000	$ 12,895,000
Greater than 12 months in an unrealized loss position	63,831,000	63,831,000	49,674,000
Total	63,845,000	63,845,000	62,569,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	756,000	756,000	180,624,000
Greater than 12 months in an unrealized loss position	379,159,000	379,159,000	348,880,000
Total	$ 379,915,000	$ 379,915,000	$ 529,504,000
Asset-backed Securities
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security			30
Greater than 12 months in an unrealized loss position \| security	19	19	21
Total	19	19	51
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position			$ 3,030,000
Greater than 12 months in an unrealized loss position	$ 4,325,000	$ 4,325,000	5,436,000
Total	4,325,000	4,325,000	8,466,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position			121,915,000
Greater than 12 months in an unrealized loss position	66,916,000	66,916,000	79,659,000
Total	$ 66,916,000	$ 66,916,000	$ 201,574,000
Collateralized loan obligations.
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security			23
Greater than 12 months in an unrealized loss position \| security	33	33	11
Total	33	33	34
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position			$ 3,579,000
Greater than 12 months in an unrealized loss position	$ 2,210,000	$ 2,210,000	1,951,000
Total	2,210,000	2,210,000	5,530,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position			112,772,000
Greater than 12 months in an unrealized loss position	170,803,000	170,803,000	61,974,000
Total	$ 170,803,000	$ 170,803,000	$ 174,746,000

Securities - Realized Gain (Los

Securities - Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Securities
Proceeds from sales of securities	$ 65,572		$ 205,738	$ 3,303
Gross realized losses on securities	(924)	$ (1)	(4,146)	(34)
Net realized losses	(924)	(1)	(4,146)	(34)
Income tax benefit on net realized losses	$ 260	$ 1	$ 1,165	$ 10
Effective tax rate applied (as a percent)	28.10%		28.10%	29.40%

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses on Loans - Major Classifications (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Loans
Total Loans	$ 4,029,543		$ 3,869,609
Allowance for credit losses	(51,729)	$ (55,314)	(49,480)	$ (48,847)	$ (45,388)	$ (44,281)
Net loans	3,977,814		3,820,129
Loans and leases receivable, accrued interest receivable	19,200		15,900
Commercial
Loans
Total Loans	834,877		840,964
Allowance for credit losses	(10,499)	(11,532)	(11,968)	(13,175)	(14,114)	(11,751)
Leases
Loans
Total Loans	354,827		277,385
Allowance for credit losses	(2,592)	(2,690)	(2,865)	(1,534)	(1,736)	(3,480)
Commercial real estate - Investor
Loans
Total Loans	1,047,122		987,635
Allowance for credit losses	(18,003)	(20,031)	(10,674)	(9,587)	(9,436)	(10,795)
Commercial real estate - Owner occupied
Loans
Total Loans	809,050		854,879
Allowance for credit losses	(12,385)	(12,562)	(15,001)	(15,171)	(11,478)	(4,913)
Construction
Loans
Total Loans	202,546		180,535
Residential real estate - Investor
Loans
Total Loans	53,762		57,353
Allowance for credit losses	(691)	(743)	(768)	(816)	(661)	(760)
Residential real estate - Owner occupied
Loans
Total Loans	227,446		219,718
Allowance for credit losses	(1,857)	(1,868)	(2,046)	(2,131)	(1,869)	(2,832)
Multifamily
Loans
Total Loans	372,020		323,691
Allowance for credit losses	(2,572)	(2,737)	(2,453)	(2,530)	(2,434)	(3,675)
HELOC
Loans
Total Loans	102,055		109,202
Allowance for credit losses	(1,652)	$ (1,694)	(1,806)	$ (1,963)	$ (1,542)	$ (2,510)
Other
Loans
Total Loans	$ 25,838		$ 18,247

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses on Loans - Major Classifications - Loan Concentrations (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Real estate \| Loan receivables \| Customer Concentration Risk
Loans
Loans receivable as a percentage of total portfolio	69.80%	70.60%

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses on Loans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	$ 55,314,000	$ 45,388,000	$ 49,480,000	$ 44,281,000
(Release of) Provision for Credit Losses	3,012,000	3,527,000	10,091,000	5,177,000
Charge-offs	6,936,000	484,000	8,691,000	1,384,000
Recoveries	339,000	416,000	849,000	773,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	51,729,000	48,847,000	51,729,000	48,847,000
Less: allowance for credit losses on loans	51,729,000	48,847,000	51,729,000	48,847,000	$ 49,480,000
Net provision expense			8,500,000
Increased reserve on loans			160,000,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	149,000		149,000
Commercial
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	11,532,000	14,114,000	11,968,000	11,751,000
(Release of) Provision for Credit Losses	(1,025,000)	(919,000)	(1,287,000)	1,488,000
Charge-offs	20,000	67,000	427,000	149,000
Recoveries	12,000	47,000	245,000	85,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	10,499,000	13,175,000	10,499,000	13,175,000
Less: allowance for credit losses on loans	10,499,000	13,175,000	10,499,000	13,175,000	11,968,000
Leases
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	2,690,000	1,736,000	2,865,000	3,480,000
(Release of) Provision for Credit Losses	(193,000)	(24,000)	498,000	(1,768,000)
Charge-offs		178,000	882,000	178,000
Recoveries	95,000		111,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	2,592,000	1,534,000	2,592,000	1,534,000
Less: allowance for credit losses on loans	2,592,000	1,534,000	2,592,000	1,534,000	2,865,000
Commercial real estate - Investor
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	20,031,000	9,436,000	10,674,000	10,795,000
(Release of) Provision for Credit Losses	4,726,000	256,000	14,117,000	(664,000)
Charge-offs	6,774,000	124,000	6,845,000	604,000
Recoveries	20,000	19,000	57,000	60,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	18,003,000	9,587,000	18,003,000	9,587,000
Less: allowance for credit losses on loans	18,003,000	9,587,000	18,003,000	9,587,000	10,674,000
Commercial real estate - Owner occupied
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	12,562,000	11,478,000	15,001,000	4,913,000
(Release of) Provision for Credit Losses	(154,000)	3,618,000	(2,397,000)	10,289,000
Charge-offs	35,000	12,000	236,000	133,000
Recoveries	12,000	87,000	17,000	102,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	12,385,000	15,171,000	12,385,000	15,171,000
Less: allowance for credit losses on loans	12,385,000	15,171,000	12,385,000	15,171,000	15,001,000
Real estate - construction
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,179,000	1,535,000	1,546,000	3,373,000
(Release of) Provision for Credit Losses	(39,000)	9,000	(406,000)	(1,829,000)
Recoveries	100,000		100,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,240,000	1,544,000	1,240,000	1,544,000
Less: allowance for credit losses on loans	1,240,000	1,544,000	1,240,000	1,544,000	1,546,000
Residential real estate - Investor
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	743,000	661,000	768,000	760,000
(Release of) Provision for Credit Losses	(55,000)	147,000	(104,000)	33,000
Recoveries	3,000	8,000	27,000	23,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	691,000	816,000	691,000	816,000
Less: allowance for credit losses on loans	691,000	816,000	691,000	816,000	768,000
Residential real estate - Owner occupied
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,868,000	1,869,000	2,046,000	2,832,000
(Release of) Provision for Credit Losses	(36,000)	149,000	(260,000)	(919,000)
Recoveries	25,000	113,000	71,000	218,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,857,000	2,131,000	1,857,000	2,131,000
Less: allowance for credit losses on loans	1,857,000	2,131,000	1,857,000	2,131,000	2,046,000
Multifamily
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	2,737,000	2,434,000	2,453,000	3,675,000
(Release of) Provision for Credit Losses	(165,000)	33,000	119,000	(1,208,000)
Recoveries		63,000		63,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	2,572,000	2,530,000	2,572,000	2,530,000
Less: allowance for credit losses on loans	2,572,000	2,530,000	2,572,000	2,530,000	2,453,000
HELOC
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,694,000	1,542,000	1,806,000	2,510,000
(Release of) Provision for Credit Losses	(77,000)	386,000	(242,000)	(649,000)
Recoveries	35,000	35,000	88,000	102,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,652,000	1,963,000	1,652,000	1,963,000
Less: allowance for credit losses on loans	1,652,000	1,963,000	1,652,000	1,963,000	1,806,000
Other
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	278,000	583,000	353,000	192,000
(Release of) Provision for Credit Losses	30,000	(128,000)	53,000	404,000
Charge-offs	107,000	103,000	301,000	320,000
Recoveries	37,000	44,000	133,000	120,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	238,000	396,000	238,000	396,000
Less: allowance for credit losses on loans	238,000	396,000	238,000	396,000	353,000
Unfunded Loan Commitment
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance			4,300,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	2,700,000	4,400,000	2,700,000	4,400,000
Less: allowance for credit losses on loans	2,700,000	4,400,000	2,700,000	4,400,000	4,300,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	149,000	$ 1,000,000	149,000	$ 1,000,000	$ 819,000
Unfunded Loan Commitment \| Other Liabilities [Member]
Allowance for loan losses:
ACL on unfunded commitments	$ 2,900,000		$ 2,900,000

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($)	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	$ 3,977,814,000		$ 3,820,129,000
Less: allowance for credit losses on loans	51,729,000	$ 55,314,000	49,480,000	$ 48,847,000	$ 45,388,000	$ 44,281,000
Non accuring loan	500,000
Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	55,751,000		50,478,000
Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	54,733,000		40,641,000
Accounts Receivable \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	679,000		5,915,000
Equipment \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	339,000		1,248,000
Other. \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI			2,674,000
Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	9,390,000		10,744,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	10,499,000	11,532,000	11,968,000	13,175,000	14,114,000	11,751,000
Commercial \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	1,528,000		7,162,000
Commercial \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	849,000		883,000
Commercial \| Accounts Receivable \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	679,000		5,915,000
Commercial \| Other. \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI			364,000
Commercial \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	2,000		569,000
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	2,592,000	2,690,000	2,865,000	1,534,000	1,736,000	3,480,000
Leases \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	339,000		1,248,000
Leases \| Equipment \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	339,000		1,248,000
Leases \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	339,000		1,248,000
Commercial real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	18,003,000	20,031,000	10,674,000	9,587,000	9,436,000	10,795,000
Commercial real estate - Investor \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	26,724,000		16,576,000
Commercial real estate - Investor \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	26,724,000		16,576,000
Commercial real estate - Investor \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	4,848,000		2,875,000
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	12,385,000	12,562,000	15,001,000	15,171,000	11,478,000	4,913,000
Commercial real estate - Owner occupied \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	17,636,000		21,498,000
Commercial real estate - Owner occupied \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	17,636,000		19,188,000
Commercial real estate - Owner occupied \| Other. \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI			2,310,000
Commercial real estate - Owner occupied \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	4,201,000		5,808,000
Construction \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	7,206,000
Construction \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	7,206,000
Residential real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	691,000	743,000	768,000	816,000	661,000	760,000
Residential real estate - Investor \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	32,000		675,000
Residential real estate - Investor \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	32,000		675,000
Residential real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	1,857,000	1,868,000	2,046,000	2,131,000	1,869,000	2,832,000
Residential real estate - Owner occupied \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	1,679,000		1,817,000
Residential real estate - Owner occupied \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	1,679,000		1,817,000
Residential real estate - Owner occupied \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans			244,000
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	2,572,000	2,737,000	2,453,000	2,530,000	2,434,000	3,675,000
Multifamily \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	568,000		1,322,000
Multifamily \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	568,000		1,322,000
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	1,652,000	1,694,000	1,806,000	1,963,000	1,542,000	2,510,000
HELOC \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	39,000		180,000
HELOC \| Real Estate \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	39,000		180,000
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	$ 238,000	$ 278,000	$ 353,000	$ 396,000	$ 583,000	$ 192,000

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses on Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Aged analysis of past due loans
Total Loans	$ 4,029,543	$ 3,869,609
Total loans, including deferred loan loan costs and PCI	3,977,814	3,820,129
Recorded Investment 90 days or Greater Past Due and Accruing	1,209	1,262
Special Mention [Member]
Aged analysis of past due loans
Total Loans	120,380	179,029
Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	72,554
Total Past Due Including PCI loans		22,214
30 to 59 Days Past Due
Aged analysis of past due loans
Current	24,232
Total Past Due Including PCI loans		6,326
60 to 89 Days Past Due
Aged analysis of past due loans
Current	19,556
Total Past Due Including PCI loans		2,874
90 Days or Greater Past Due
Aged analysis of past due loans
Current	28,766
Total Past Due Including PCI loans		13,014
Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	3,956,989
Current including PCI Loans		3,847,395
Commercial
Aged analysis of past due loans
Total Loans	834,877	840,964
Recorded Investment 90 days or Greater Past Due and Accruing	979	460
Commercial \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	30,650	27,047
Commercial \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	4,755	1,840
Commercial \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	1,829	3
Commercial \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	1,874	1,012
Commercial \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,052	825
Commercial \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	830,122	839,124
Leases
Aged analysis of past due loans
Total Loans	354,827	277,385
Leases \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	2,659	1,083
Leases \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	2,502	447
Leases \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current		22
Leases \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	157	614
Leases \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	352,168	276,302
Commercial real estate - Investor
Aged analysis of past due loans
Total Loans	1,047,122	987,635
Commercial real estate - Investor \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	24,133	32,655
Commercial real estate - Investor \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	35,049	8,867
Commercial real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	2,205	3,276
Commercial real estate - Investor \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	16,728	1,276
Commercial real estate - Investor \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	16,116	4,315
Commercial real estate - Investor \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	1,012,073	978,768
Commercial real estate - Owner occupied
Aged analysis of past due loans
Total Loans	809,050	854,879
Recorded Investment 90 days or Greater Past Due and Accruing		173
Commercial real estate - Owner occupied \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	58,716	97,763
Commercial real estate - Owner occupied \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	17,231	2,697
Commercial real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	15,232	373
Commercial real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	120	113
Commercial real estate - Owner occupied \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,879	2,211
Commercial real estate - Owner occupied \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	791,819	852,182
Real estate - construction
Aged analysis of past due loans
Total Loans	202,546	180,535
Real estate - construction \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	7,524	130
Real estate - construction \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	118	14
Real estate - construction \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	200
Real estate - construction \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	7,206	116
Real estate - construction \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	195,022	180,405
Residential real estate - Investor
Aged analysis of past due loans
Total Loans	53,762	57,353
Recorded Investment 90 days or Greater Past Due and Accruing	140	144
Residential real estate - Investor \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	67	70
Residential real estate - Investor \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	529	1,432
Residential real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	252	445
Residential real estate - Investor \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	277	987
Residential real estate - Investor \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	53,233	55,921
Residential real estate - Owner occupied
Aged analysis of past due loans
Total Loans	227,446	219,718
Recorded Investment 90 days or Greater Past Due and Accruing		485
Residential real estate - Owner occupied \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	2,974	3,423
Residential real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	735	1,191
Residential real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	419
Residential real estate - Owner occupied \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,820	2,232
Residential real estate - Owner occupied \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	224,472	216,295
Multifamily
Aged analysis of past due loans
Total Loans	372,020	323,691
Multifamily \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	6,197	6,086
Multifamily \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	840	1,950
Multifamily \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	713	267
Multifamily \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	127	361
Multifamily \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current		1,322
Multifamily \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	371,180	321,741
HELOC
Aged analysis of past due loans
Total Loans	102,055	109,202
Recorded Investment 90 days or Greater Past Due and Accruing	90
HELOC \| Special Mention [Member]
Aged analysis of past due loans
Total Loans		111
HELOC \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	993	773
HELOC \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	646	291
HELOC \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	88	90
HELOC \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	259	392
HELOC \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	101,062	108,429
Other
Aged analysis of past due loans
Total Loans	25,838	18,247
Other \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current		19
Other \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current		19
Other \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	$ 25,838	$ 18,228

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses on Loans - Nonaccruals (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non accrual including PCI Loans	$ 62,116,000	$ 62,116,000	$ 31,602,000
Nonaccrual with no ACL	32,382,000	32,382,000	18,404,000
Interest on nonaccrual loans	189,000	304,000
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,167,000	2,167,000	7,189,000
Nonaccrual with no ACL	2,167,000	2,167,000	6,598,000
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	377,000	377,000	1,876,000
Nonaccrual with no ACL	38,000	38,000
Commercial real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	26,724,000	26,724,000	4,346,000
Nonaccrual with no ACL	11,786,000	11,786,000	4,244,000
Commercial real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	18,290,000	18,290,000	8,050,000
Nonaccrual with no ACL	3,833,000	3,833,000	3,813,000
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	7,206,000	7,206,000	251,000
Nonaccrual with no ACL	7,206,000	7,206,000
Residential real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,362,000	1,362,000	1,528,000
Nonaccrual with no ACL	1,362,000	1,362,000	675,000
Residential real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	3,627,000	3,627,000	3,713,000
Nonaccrual with no ACL	3,627,000	3,627,000	1,572,000
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,141,000	1,141,000	2,538,000
Nonaccrual with no ACL	1,141,000	1,141,000	1,322,000
HELOC
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,222,000	1,222,000	2,109,000
Nonaccrual with no ACL	$ 1,222,000	$ 1,222,000	180,000
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual			$ 2,000

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses on Loans - Credit Quality (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			$ 5,016,000
2021			292,000
2020			3,028,000
2019			12,000
Prior			343,000
Total	$ 6,936,000	$ 484,000	8,691,000	$ 1,384,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	795,374,000		795,374,000		$ 1,207,348,000
2022 / 2021	1,071,693,000		1,071,693,000		886,935,000
2021 / 2020	741,422,000		741,422,000		476,753,000
2020 / 2019	381,393,000		381,393,000		257,206,000
2019 / 2018	214,219,000		214,219,000		167,647,000
Prior	309,154,000		309,154,000		245,580,000
Revolving Loans	514,909,000		514,909,000		628,140,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	4,029,543,000		4,029,543,000		3,869,609,000
Minimum
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Loan commitment for inclusion in credit quality analysis			50,000
Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	782,308,000		782,308,000		1,165,744,000
2022 / 2021	1,010,284,000		1,010,284,000		837,389,000
2021 / 2020	684,901,000		684,901,000		401,848,000
2020 / 2019	332,814,000		332,814,000		183,707,000
2019 / 2018	173,173,000		173,173,000		165,368,000
Prior	304,066,000		304,066,000		226,741,000
Revolving Loans	466,981,000		466,981,000		600,854,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	3,755,906,000		3,755,906,000		3,581,651,000
Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	2,063,000		2,063,000		16,031,000
2022 / 2021	25,570,000		25,570,000		27,684,000
2021 / 2020	33,263,000		33,263,000		70,495,000
2020 / 2019	26,806,000		26,806,000		31,990,000
2019 / 2018	1,929,000		1,929,000		1,301,000
Prior	894,000		894,000		10,131,000
Revolving Loans	29,855,000		29,855,000		21,397,000
Total Loans	120,380,000		120,380,000		179,029,000
Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	11,003,000		11,003,000		25,573,000
2022 / 2021	35,839,000		35,839,000		21,862,000
2021 / 2020	23,258,000		23,258,000		4,410,000
2020 / 2019	21,773,000		21,773,000		41,509,000
2019 / 2018	39,117,000		39,117,000		978,000
Prior	4,194,000		4,194,000		8,708,000
Revolving Loans	18,073,000		18,073,000		5,889,000
Total Loans	153,257,000		153,257,000		108,929,000
Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2021			17,000
2020			364,000
Prior			46,000
Total	20,000	67,000	427,000	149,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	215,492,000		215,492,000		231,889,000
2022 / 2021	188,261,000		188,261,000		73,327,000
2021 / 2020	43,089,000		43,089,000		25,760,000
2020 / 2019	16,094,000		16,094,000		27,350,000
2019 / 2018	20,416,000		20,416,000		6,964,000
Prior	4,315,000		4,315,000		2,651,000
Revolving Loans	345,831,000		345,831,000		473,023,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	834,877,000		834,877,000		840,964,000
Commercial \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	215,492,000		215,492,000		225,056,000
2022 / 2021	187,682,000		187,682,000		70,608,000
2021 / 2020	41,464,000		41,464,000		21,597,000
2020 / 2019	13,359,000		13,359,000		12,742,000
2019 / 2018	10,676,000		10,676,000		6,957,000
Prior	4,315,000		4,315,000		2,651,000
Revolving Loans	311,562,000		311,562,000		447,821,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	785,929,000		785,929,000		787,432,000
Commercial \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					1,875,000
2022 / 2021	500,000		500,000		272,000
2021 / 2020	244,000		244,000		1,182,000
2020 / 2019					2,432,000
2019 / 2018	51,000		51,000
Revolving Loans	29,855,000		29,855,000		21,286,000
Total Loans	30,650,000		30,650,000		27,047,000
Commercial \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					4,958,000
2022 / 2021	79,000		79,000		2,447,000
2021 / 2020	1,381,000		1,381,000		2,981,000
2020 / 2019	2,735,000		2,735,000		12,176,000
2019 / 2018	9,689,000		9,689,000		7,000
Revolving Loans	4,414,000		4,414,000		3,916,000
Total Loans	18,298,000		18,298,000		26,485,000
Real estate - residential loans
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Mortgage loans in process of foreclosure	176,000		176,000		600,000
Leases
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			870,000
2019			12,000
Total		178,000	882,000	178,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	151,691,000		151,691,000		162,985,000
2022 / 2021	125,431,000		125,431,000		64,203,000
2021 / 2020	47,808,000		47,808,000		26,995,000
2020 / 2019	17,522,000		17,522,000		17,923,000
2019 / 2018	9,780,000		9,780,000		4,449,000
Prior	2,595,000		2,595,000		830,000
Total Loans	354,827,000		354,827,000		277,385,000
Leases \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	151,691,000		151,691,000		161,379,000
2022 / 2021	125,092,000		125,092,000		64,203,000
2021 / 2020	47,808,000		47,808,000		26,995,000
2020 / 2019	17,522,000		17,522,000		17,653,000
2019 / 2018	9,545,000		9,545,000		4,449,000
Prior	2,595,000		2,595,000		830,000
Total Loans	354,253,000		354,253,000		275,509,000
Leases \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					1,606,000
2022 / 2021	339,000		339,000
2020 / 2019					270,000
2019 / 2018	235,000		235,000
Total Loans	574,000		574,000		1,876,000
Commercial real estate - Investor
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			4,121,000
2021			71,000
2020			2,653,000
Total	6,774,000	124,000	6,845,000	604,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	187,743,000		187,743,000		433,775,000
2022 / 2021	366,250,000		366,250,000		232,121,000
2021 / 2020	217,189,000		217,189,000		123,981,000
2020 / 2019	119,081,000		119,081,000		84,814,000
2019 / 2018	69,048,000		69,048,000		48,005,000
Prior	67,264,000		67,264,000		57,826,000
Revolving Loans	20,547,000		20,547,000		7,113,000
Total Loans	1,047,122,000		1,047,122,000		987,635,000
Commercial real estate - Investor \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	176,779,000		176,779,000		416,094,000
2022 / 2021	341,597,000		341,597,000		228,686,000
2021 / 2020	203,972,000		203,972,000		118,491,000
2020 / 2019	111,333,000		111,333,000		63,845,000
2019 / 2018	59,770,000		59,770,000		46,935,000
Prior	67,264,000		67,264,000		46,406,000
Revolving Loans	8,148,000		8,148,000		7,113,000
Total Loans	968,863,000		968,863,000		927,570,000
Commercial real estate - Investor \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					5,349,000
2022 / 2021	12,866,000		12,866,000		1,417,000
2021 / 2020	11,267,000		11,267,000		5,490,000
2020 / 2019					10,206,000
2019 / 2018					1,070,000
Prior					9,123,000
Total Loans	24,133,000		24,133,000		32,655,000
Commercial real estate - Investor \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	10,964,000		10,964,000		12,332,000
2022 / 2021	11,787,000		11,787,000		2,018,000
2021 / 2020	1,950,000		1,950,000
2020 / 2019	7,748,000		7,748,000		10,763,000
2019 / 2018	9,278,000		9,278,000
Prior					2,297,000
Revolving Loans	12,399,000		12,399,000
Total Loans	54,126,000		54,126,000		27,410,000
Commercial real estate - Owner occupied
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			22,000
2021			178,000
2020			4,000
Prior			32,000
Total	35,000	12,000	236,000	133,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	107,721,000		107,721,000		180,679,000
2022 / 2021	165,939,000		165,939,000		263,102,000
2021 / 2020	219,649,000		219,649,000		155,044,000
2020 / 2019	106,372,000		106,372,000		81,981,000
2019 / 2018	73,942,000		73,942,000		49,598,000
Prior	102,169,000		102,169,000		90,730,000
Revolving Loans	33,258,000		33,258,000		33,745,000
Total Loans	809,050,000		809,050,000		854,879,000
Commercial real estate - Owner occupied \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	105,963,000		105,963,000		169,703,000
2022 / 2021	139,223,000		139,223,000		223,731,000
2021 / 2020	181,543,000		181,543,000		105,669,000
2020 / 2019	78,750,000		78,750,000		47,351,000
2019 / 2018	54,909,000		54,909,000		49,367,000
Prior	101,396,000		101,396,000		86,660,000
Revolving Loans	33,258,000		33,258,000		33,745,000
Total Loans	695,042,000		695,042,000		716,226,000
Commercial real estate - Owner occupied \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,758,000		1,758,000		8,430,000
2022 / 2021	11,722,000		11,722,000		22,242,000
2021 / 2020	18,180,000		18,180,000		48,184,000
2020 / 2019	26,480,000		26,480,000		17,668,000
2019 / 2018	222,000		222,000		231,000
Prior	354,000		354,000		1,008,000
Total Loans	58,716,000		58,716,000		97,763,000
Commercial real estate - Owner occupied \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					2,546,000
2022 / 2021	14,994,000		14,994,000		17,129,000
2021 / 2020	19,926,000		19,926,000		1,191,000
2020 / 2019	1,142,000		1,142,000		16,962,000
2019 / 2018	18,811,000		18,811,000
Prior	419,000		419,000		3,062,000
Total Loans	55,292,000		55,292,000		40,890,000
Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	26,834,000		26,834,000		54,275,000
2022 / 2021	83,216,000		83,216,000		65,758,000
2021 / 2020	56,217,000		56,217,000		54,839,000
2020 / 2019	29,588,000		29,588,000		2,506,000
2019 / 2018	1,837,000		1,837,000		226,000
Prior	1,155,000		1,155,000		1,408,000
Revolving Loans	3,699,000		3,699,000		1,523,000
Total Loans	202,546,000		202,546,000		180,535,000
Construction \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	26,529,000		26,529,000		53,058,000
2022 / 2021	75,698,000		75,698,000		65,758,000
2021 / 2020	56,217,000		56,217,000		39,542,000
2020 / 2019	19,531,000		19,531,000		2,390,000
2019 / 2018	1,837,000		1,837,000		226,000
Prior	1,155,000		1,155,000		1,408,000
Revolving Loans	3,699,000		3,699,000		1,523,000
Total Loans	184,666,000		184,666,000		163,905,000
Construction \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	305,000		305,000
2022 / 2021	312,000		312,000
2021 / 2020					15,297,000
Total Loans	617,000		617,000		15,297,000
Construction \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					1,217,000
2022 / 2021	7,206,000		7,206,000
2020 / 2019	10,057,000		10,057,000		116,000
Total Loans	17,263,000		17,263,000		1,333,000
Residential real estate - Investor
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	3,310,000		3,310,000		15,358,000
2022 / 2021	14,958,000		14,958,000		9,980,000
2021 / 2020	9,021,000		9,021,000		6,945,000
2020 / 2019	6,317,000		6,317,000		9,084,000
2019 / 2018	7,534,000		7,534,000		5,039,000
Prior	11,205,000		11,205,000		9,956,000
Revolving Loans	1,417,000		1,417,000		991,000
Total Loans	53,762,000		53,762,000		57,353,000
Residential real estate - Investor \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	3,310,000		3,310,000		14,737,000
2022 / 2021	14,560,000		14,560,000		9,910,000
2021 / 2020	8,954,000		8,954,000		6,945,000
2020 / 2019	6,317,000		6,317,000		8,585,000
2019 / 2018	7,116,000		7,116,000		4,853,000
Prior	10,519,000		10,519,000		9,548,000
Revolving Loans	1,417,000		1,417,000		991,000
Total Loans	52,193,000		52,193,000		55,569,000
Residential real estate - Investor \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2022 / 2021					70,000
2021 / 2020	67,000		67,000
Total Loans	67,000		67,000		70,000
Residential real estate - Investor \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					621,000
2022 / 2021	398,000		398,000
2020 / 2019					499,000
2019 / 2018	418,000		418,000		186,000
Prior	686,000		686,000		408,000
Total Loans	1,502,000		1,502,000		1,714,000
Residential real estate - Owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	26,371,000		26,371,000		42,016,000
2022 / 2021	42,037,000		42,037,000		45,151,000
2021 / 2020	41,439,000		41,439,000		28,655,000
2020 / 2019	26,634,000		26,634,000		16,869,000
2019 / 2018	15,833,000		15,833,000		12,283,000
Prior	74,366,000		74,366,000		73,106,000
Revolving Loans	766,000		766,000		1,638,000
Total Loans	227,446,000		227,446,000		219,718,000
Residential real estate - Owner occupied \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	26,371,000		26,371,000		41,885,000
2022 / 2021	41,915,000		41,915,000		44,884,000
2021 / 2020	41,439,000		41,439,000		28,418,000
2020 / 2019	26,544,000		26,544,000		16,146,000
2019 / 2018	15,147,000		15,147,000		12,152,000
Prior	71,637,000		71,637,000		70,741,000
Revolving Loans	766,000		766,000		1,638,000
Total Loans	223,819,000		223,819,000		215,864,000
Residential real estate - Owner occupied \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					131,000
2022 / 2021	122,000		122,000		267,000
2021 / 2020					237,000
2020 / 2019	90,000		90,000		723,000
2019 / 2018	686,000		686,000		131,000
Prior	2,729,000		2,729,000		2,365,000
Total Loans	3,627,000		3,627,000		3,854,000
Multifamily
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	69,947,000		69,947,000		79,354,000
2022 / 2021	80,746,000		80,746,000		129,940,000
2021 / 2020	105,383,000		105,383,000		52,604,000
2020 / 2019	58,118,000		58,118,000		14,809,000
2019 / 2018	14,047,000		14,047,000		40,290,000
Prior	43,397,000		43,397,000		6,365,000
Revolving Loans	382,000		382,000		329,000
Total Loans	372,020,000		372,020,000		323,691,000
Multifamily \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	69,947,000		69,947,000		76,877,000
2022 / 2021	79,689,000		79,689,000		126,257,000
2021 / 2020	101,878,000		101,878,000		52,262,000
2020 / 2019	57,792,000		57,792,000		13,125,000
2019 / 2018	12,391,000		12,391,000		39,703,000
Prior	42,603,000		42,603,000		6,098,000
Revolving Loans	382,000		382,000		329,000
Total Loans	364,682,000		364,682,000		314,651,000
Multifamily \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					377,000
2022 / 2021	170,000		170,000		3,683,000
2021 / 2020	3,505,000		3,505,000		342,000
2020 / 2019	326,000		326,000		1,684,000
2019 / 2018	1,656,000		1,656,000
Prior	540,000		540,000
Total Loans	6,197,000		6,197,000		6,086,000
Multifamily \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022					2,100,000
2022 / 2021	887,000		887,000
2019 / 2018					587,000
Prior	254,000		254,000		267,000
Total Loans	1,141,000		1,141,000		2,954,000
HELOC
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,804,000		1,804,000		2,822,000
2022 / 2021	2,787,000		2,787,000		518,000
2021 / 2020	212,000		212,000		1,497,000
2020 / 2019	1,444,000		1,444,000		1,703,000
2019 / 2018	1,631,000		1,631,000		724,000
Prior	2,600,000		2,600,000		2,597,000
Revolving Loans	91,577,000		91,577,000		99,341,000
Total Loans	102,055,000		102,055,000		109,202,000
HELOC \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,765,000		1,765,000		2,760,000
2022 / 2021	2,760,000		2,760,000		517,000
2021 / 2020	211,000		211,000		1,497,000
2020 / 2019	1,443,000		1,443,000		1,703,000
2019 / 2018	1,631,000		1,631,000		657,000
Prior	2,494,000		2,494,000		2,288,000
Revolving Loans	90,317,000		90,317,000		97,258,000
Total Loans	100,621,000		100,621,000		106,680,000
HELOC \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
Revolving Loans					111,000
Total Loans					111,000
HELOC \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	39,000		39,000		62,000
2022 / 2021	27,000		27,000		1,000
2021 / 2020	1,000		1,000
2020 / 2019	1,000		1,000
2019 / 2018					67,000
Prior	106,000		106,000		309,000
Revolving Loans	1,260,000		1,260,000		1,972,000
Total Loans	1,434,000		1,434,000		2,411,000
Other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			3,000
2021			26,000
2020			7,000
Prior			265,000
Total	107,000	$ 103,000	301,000	$ 320,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	4,461,000		4,461,000		4,195,000
2022 / 2021	2,068,000		2,068,000		2,835,000
2021 / 2020	1,415,000		1,415,000		433,000
2020 / 2019	223,000		223,000		167,000
2019 / 2018	151,000		151,000		69,000
Prior	88,000		88,000		111,000
Revolving Loans	17,432,000		17,432,000		10,437,000
Total Loans	25,838,000		25,838,000		18,247,000
Other \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	4,461,000		4,461,000		4,195,000
2022 / 2021	2,068,000		2,068,000		2,835,000
2021 / 2020	1,415,000		1,415,000		432,000
2020 / 2019	223,000		223,000		167,000
2019 / 2018	151,000		151,000		69,000
Prior	88,000		88,000		111,000
Revolving Loans	17,432,000		17,432,000		10,436,000
Total Loans	$ 25,838,000		$ 25,838,000		18,245,000
Other \| Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2021 / 2020					1,000
Revolving Loans					1,000
Total Loans					$ 2,000

Charge-offs Activity by Loan Ty

Charge-offs Activity by Loan Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Loans by risk rating
2022			$ 5,016
2021			292
2020			3,028
2019			12
Prior			343
Total	$ 6,936	$ 484	8,691	$ 1,384
Commercial
Loans by risk rating
2021			17
2020			364
Prior			46
Total	20	67	427	149
Leases
Loans by risk rating
2022			870
2019			12
Total		178	882	178
Commercial real estate - Investor
Loans by risk rating
2022			4,121
2021			71
2020			2,653
Total	6,774	124	6,845	604
Commercial real estate - Owner occupied
Loans by risk rating
2022			22
2021			178
2020			4
Prior			32
Total	35	12	236	133
Other
Loans by risk rating
2022			3
2021			26
2020			7
Prior			265
Total	$ 107	$ 103	$ 301	$ 320

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses on Loans - TDR (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2022 loan	Sep. 30, 2023 USD ($) item loan	Sep. 30, 2022 USD ($) loan
Troubled debt restructurings - modified during the period
Number of TDR loan modifications \| loan	0	15	2
Total Loans modified		$ 43,003,000
TDR's defaulted
Pre-modification outstanding recorded investment during the period			$ 39,000
Other information
Number of payment modification \| item		2
HELOC \| Others
TDR's defaulted
Pre-modification outstanding recorded investment during the period		$ 0
Commercial
Troubled debt restructurings - modified during the period
Total Loans modified		$ 2,692,000

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses on Loans - Loan Modifications (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Financing Receivable
Total Loans modified	$ 43,003
Total Loan Segment Modified to Total Loan Segment	1.10%
Weighted-Average Term Extension (In Months)	11 months 5 days
Weighted-Average Interest Rate Change	5%
Weighted-Average Delay of Payment (In Months)	7 months 5 days
90 Days or Greater Past Due
Financing Receivable
Total Loans modified	$ 979
Total Past Due
Financing Receivable
Total Loans modified	979
Current
Financing Receivable
Total Loans modified	42,024
Term Extension
Financing Receivable
Total Loans modified	31,416
Combination - Term Extension and Payment Delay
Financing Receivable
Total Loans modified	10,608
Combination - Term Extension and Interest Rate Reduction
Financing Receivable
Total Loans modified	979
Commercial
Financing Receivable
Total Loans modified	$ 2,692
Total Loan Segment Modified to Total Loan Segment	0.30%
Weighted-Average Term Extension (In Months)	6 months 22 days
Weighted-Average Interest Rate Change	5%
Commercial \| 90 Days or Greater Past Due
Financing Receivable
Total Loans modified	$ 979
Commercial \| Total Past Due
Financing Receivable
Total Loans modified	979
Commercial \| Current
Financing Receivable
Total Loans modified	1,713
Commercial \| Term Extension
Financing Receivable
Total Loans modified	1,713
Commercial \| Combination - Term Extension and Interest Rate Reduction
Financing Receivable
Total Loans modified	979
Commercial real estate - Investor
Financing Receivable
Total Loans modified	$ 23,363
Total Loan Segment Modified to Total Loan Segment	2.20%
Weighted-Average Term Extension (In Months)	9 months 24 days
Weighted-Average Delay of Payment (In Months)	7 months 5 days
Commercial real estate - Investor \| Current
Financing Receivable
Total Loans modified	$ 23,363
Commercial real estate - Investor \| Term Extension
Financing Receivable
Total Loans modified	12,755
Commercial real estate - Investor \| Combination - Term Extension and Payment Delay
Financing Receivable
Total Loans modified	10,608
Commercial real estate - Owner occupied
Financing Receivable
Total Loans modified	$ 16,218
Total Loan Segment Modified to Total Loan Segment	2%
Weighted-Average Term Extension (In Months)	14 months
Commercial real estate - Owner occupied \| Current
Financing Receivable
Total Loans modified	$ 16,218
Commercial real estate - Owner occupied \| Term Extension
Financing Receivable
Total Loans modified	16,218
Residential real estate - Owner occupied
Financing Receivable
Total Loans modified	$ 437
Total Loan Segment Modified to Total Loan Segment	0.20%
Weighted-Average Term Extension (In Months)	2 months
Residential real estate - Owner occupied \| Current
Financing Receivable
Total Loans modified	$ 437
Residential real estate - Owner occupied \| Term Extension
Financing Receivable
Total Loans modified	437
Multifamily
Financing Receivable
Total Loans modified	$ 254
Total Loan Segment Modified to Total Loan Segment	0.10%
Weighted-Average Term Extension (In Months)	16 months
Multifamily \| Current
Financing Receivable
Total Loans modified	$ 254
Multifamily \| Term Extension
Financing Receivable
Total Loans modified	254
HELOC
Financing Receivable
Total Loans modified	$ 39
Total Loan Segment Modified to Total Loan Segment	0%
Weighted-Average Term Extension (In Months)	24 months
HELOC \| Current
Financing Receivable
Total Loans modified	$ 39
HELOC \| Term Extension
Financing Receivable
Total Loans modified	$ 39

Deposits - Classifications of D

Deposits - Classifications of Deposits (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deposits
Noninterest bearing demand	$ 1,862,659	$ 2,051,702
Savings	1,003,498	1,145,592
NOW accounts	567,997	609,338
Money market accounts	702,176	862,170
Certificates of deposit of less than $100,000	248,272	244,017
Certificates of deposit of $100,000 through $250,000	162,901	157,438
Certificates of deposit of more than $250,000	66,817	40,466
Total deposits	$ 4,614,320	$ 5,110,723

Borrowings - Summary (Details)

Borrowings - Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Borrowings
Total borrowings	$ 546,028	$ 260,811
Securities sold under repurchase agreements
Borrowings
Total borrowings	25,894	32,156
Other short-term borrowings
Borrowings
Total borrowings	435,000	90,000
Junior subordinated debentures
Borrowings
Total borrowings	25,773	25,773
Subordinated debentures
Borrowings
Total borrowings	$ 59,361	59,297
Senior notes
Borrowings
Total borrowings		44,585
Notes payable and other borrowings
Borrowings
Total borrowings		$ 9,000

Borrowings - Additional informa

Borrowings - Additional information (Details) $ in Thousands			1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 24, 2023 USD ($)	Feb. 24, 2020 USD ($)	Dec. 31, 2016	Sep. 30, 2023 USD ($) item	Jun. 30, 2021 USD ($)	Sep. 30, 2023 USD ($) item	Sep. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Borrowings
Securities available-for-sale, at fair value				$ 1,229,618		$ 1,229,618			$ 1,539,359
Number of customers having secured balances exceeding specified percentage of stockholders equity \| item				0		0
Threshold percentage of stockholders' equity						10%
Borrowings at FHLBC as percentage of total assets				35%		35%
Borrowings at FHLBC as percentage of book value of certain mortgage loans				60%		60%
FHLBC stock				$ 20,900		$ 20,900			5,600
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock				35,830		35,830			20,530
Proceeds from term note		$ 30,000
Repayment of term note						9,000	$ 3,000
Senior notes									44,585
Basis points added to reference rate (as a percent)		175%
Total borrowings				546,028		546,028			260,811
Asset Pledged as Collateral with Right \| Securities sold under repurchase agreements
Borrowings
Securities available-for-sale, at fair value				43,800		43,800			71,400
Three Months Secured Overnight Financing Rate
Borrowings
Basis points added to reference rate (as a percent)					273%
Securities sold under repurchase agreements
Borrowings
Total borrowings				25,894		25,894			32,156
Securities sold under repurchase agreements \| Asset Pledged as Collateral with Right \| Securities sold under repurchase agreements
Borrowings
Investment securities pledged with financial institutions, dollars				$ 25,900		$ 25,900			32,200
Federal Home Loan Bank Advances
Borrowings
Borrowings at FHLBC as percentage of book value of certain mortgage loans				60%		60%
FHLBC advance amount				$ 435,000		$ 435,000			90,000
FHLBC stock				20,900		20,900
Principal balance of loans collateralized				1,470,000		1,470,000
Combined collateral value				1,020,000		1,020,000
Amount available for additional borrowings				581,700		581,700
Subordinated debentures
Borrowings
Total borrowings				59,361		59,361			59,297
Notes Payable to Banks [Member]
Borrowings
Total borrowings									9,000
Junior subordinated debentures
Borrowings
Total borrowings				$ 25,773		$ 25,773			$ 25,773
Senior Notes [Member]
Borrowings
Interest rate (as a percent)			5.75%
Debt Instrument, Term			10 years
Interest rate term			5 years
Effective interest rate				9.39%		9.39%			8.62%
Total borrowings									$ 44,585
Debt instrument redemption price, percentage				12.85%		100%
Debt redeemed amount								$ 45,000
Debt issuance costs				$ 362
Senior Notes [Member] \| Debt Instrument Variable Rate Base LIBOR [Member]
Borrowings
Basis points added to reference rate (as a percent)			3.85%
Term Debt
Borrowings
Proceeds from term note		$ 20,000
Repayment of term note	$ 9,000
Debt term		3 years
Subordinated Notes Due 2031
Borrowings
Interest rate (as a percent)					3.50%
Outstanding, net of deferred issuance costs				$ 59,400		$ 59,400			$ 59,300
Face amount					$ 60,000

Junior Subordinated Debentures

Junior Subordinated Debentures - Issuance (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended	7 Months Ended	9 Months Ended
	Apr. 30, 2007	Sep. 30, 2023	Sep. 30, 2022	Jun. 15, 2017	Dec. 31, 2017	Sep. 30, 2023	Dec. 31, 2022
Junior subordinated debentures
Junior subordinated debentures		$ 25,773				$ 25,773	$ 25,773
Old Second Capital Trust II [Member]
Junior subordinated debentures
Proceeds from sale of cumulative trust preferred securities	$ 25,000
Maturity Period						30 years
Cash distribution fixed rate of trust preferred securities (as a percent)				6.77%
Basis points added to cash distribution floating rate base (as a percent)					1.50%
Cash distribution, floating rate base						three-month SOFR
Amortization period						30 years
Old Second Capital Trust II [Member] \| Debt Instrument, Redemption, Period One [Member]
Junior subordinated debentures
Cash distribution rate of trust preferred securities (as a percent)		3.77%	4.39%
Junior subordinated debentures
Junior subordinated debentures
Junior Subordinated Debentures issuance cost		$ 1,000				$ 1,000	$ 1,000
Junior subordinated debentures \| Old Second Capital Trust II [Member]
Junior subordinated debentures
Junior subordinated debentures		$ 25,800				$ 25,800

Equity Compensation Plans (Deta

Equity Compensation Plans (Details) - USD ($) $ in Millions	1 Months Ended	9 Months Ended
Equity Compensation Plans (Details) - USD ($) $ in Millions	May 31, 2021	Sep. 30, 2023	Sep. 30, 2022	May 31, 2019
Equity Compensation Plans
Total compensation cost		$ 2.7	$ 2.3
Vesting Percentage , Fully Vest , Performance measure		50%
Minimum
Equity Compensation Plans
Vesting Percentage , Fully Vest , Performance measure		50%
Maximum
Equity Compensation Plans
Vesting Percentage , Pro rata , Performance measure		50%
2019 Plan
Equity Compensation Plans
Number of shares authorized	1,800,000			600,000
Increase in number of shares authorized	1,200,000
Number of shares available for issuance		975,712

Equity Compensation Plans - Res

Equity Compensation Plans - Restricted Stock and RSUs (Details) - Restricted Stock and Restricted Stock Units [Member] - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Changes in unvested awards
Nonvested at the beginning of the period (in shares)	649,210
Granted (in shares)	240,149	268,160
Vested (in shares)	(137,534)
Forfeited (in shares)	(15,191)
Nonvested at the end of the period (in shares)	736,634
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 12.84
Granted (in dollars per share)	17.02
Vested (in dollars per share)	12.53
Forfeited (in dollars per share)	14.25
Nonvested at the end of the period (in dollars per share)	$ 14.23
Additional information
Total unrecognized compensation cost of restricted awards	$ 5
Expected weighted-average period for recognition of unrecognized compensation	1 year 10 months 13 days

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic earnings per share:
Weighted-average common shares outstanding	44,675,489	44,565,626	44,653,451	44,509,072
Net income	$ 24,335	$ 19,523	$ 73,504	$ 43,790
Basic earnings per share	$ 0.55	$ 0.43	$ 1.65	$ 0.98
Diluted earnings per share:
Weighted-average common shares outstanding	44,675,489	44,565,626	44,653,451	44,509,072
Diluted average common shares outstanding	45,428,409	45,221,541	45,390,218	45,207,992
Net earnings available to common stockholders	$ 24,335	$ 19,523	$ 73,504	$ 43,790
Diluted earnings per share	$ 0.54	$ 0.43	$ 1.62	$ 0.97
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)	752,920	655,915	736,767	698,920

Regulatory & Capital Matters (D

Regulatory & Capital Matters (Details) $ in Millions		9 Months Ended	12 Months Ended
Regulatory & Capital Matters (Details) $ in Millions	Nov. 06, 2023 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)		0.0962	0.0814
Risk-based capital ratio (as a percent)		0.1384	0.1252
Payments of Dividends	$ 2.2
Deferment of impact on retained earnings		$ 1.9
Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)		0.1043	0.0932
Risk-based capital ratio (as a percent)		0.1357	0.1275
Tier One leverage ratio, basis point increase (as a percent)		1.11%
Risk-based capital ratio, basis point increase (as a percent)			0.82%
Minimum \| Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)		0.08
Risk-based capital ratio (as a percent)		0.12
Tier 1 capital leverage ratio, board-designated threshold		8%
Total Capital Ratio, board-designated threshold (as a percent)		12%

Regulatory & Capital Matters -

Regulatory & Capital Matters - Capital Levels and Industry Defined Regulatory Minimums (Details) $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Common equity tier 1 capital to risk weighted assets
Actual	$ 530,368	$ 457,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 337,507	$ 330,966
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.11%	0.0967%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	7%	0.07%
Total capital to risk weighted assets, Amount
Actual at period end	$ 667,182	$ 592,039
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 506,171	$ 496,518
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1384	0.1252
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.1050	0.1050
Tier 1 capital to risk weighted assets, Amount
Actual	$ 555,368	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 409,777	$ 401,838
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1152	0.1020
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.0850	0.0850
Tier 1 capital to average assets, Amount
Actual	$ 555,368	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 230,922	$ 236,956
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.0962	0.0814
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.0400	0.0400
Subsidiaries [Member]
Common equity tier 1 capital to risk weighted assets
Actual	$ 601,999	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	337,389	330,498
Minimum Required to Be Well Capitalized	$ 313,290	$ 306,891
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1249%	0.117%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	7%	0.07%
Minimum Required to Be Well Capitalized (as a percent)	6.50%	6.50%
Total capital to risk weighted assets, Amount
Actual at period end	$ 653,813	$ 602,237
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	505,898	495,960
Minimum Required to Be Well Capitalized	$ 481,808	$ 472,343
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1357	0.1275
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.1050	0.1050
Minimum Required to Be Well Capitalized (as a percent)	0.1000	0.1000
Tier 1 capital to risk weighted assets, Amount
Actual	$ 601,999	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	409,687	401,319
Minimum Required to Be Well Capitalized	$ 385,588	$ 377,712
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1249	0.1170
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.0850	0.0850
Minimum Required to Be Well Capitalized (as a percent)	0.0800	0.0800
Tier 1 capital to average assets, Amount
Actual	$ 601,999	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	230,872	237,083
Minimum Required to Be Well Capitalized	$ 288,590	$ 296,354
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.1043	0.0932
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent)	0.0400	0.0400
Minimum Required to Be Well Capitalized (as a percent)	0.0500	0.0500

Regulatory & Capital Matters _2

Regulatory & Capital Matters - Dividend Restrictions and Deferrals (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($)
Dividend Restrictions and Deferrals
Number of previous years retained profit considered for dividend payment	2 years
Minimum capital requirements, minimum percentage required	2.50%
Payments of dividends	$ 70.4

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	9 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Fair value transfer assets into level 3		$ 0
Asset-backed Securities
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Fair value transfer assets out of level 3	$ 14,885
Collateralized loan obligations.
Fair Value Assets and Liabilities Measured on Recurring Basis Unobservable Input Reconciliation [Line Items]
Fair value transfer assets out of level 3	$ 6,764

Fair Value Measurements - Recur

Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets:
Securities available-for-sale	$ 1,229,618	$ 1,539,359
Mortgage servicing rights	11,461	11,189
U.S. Treasury
Assets:
Securities available-for-sale	216,777	212,129
U.S. government agencies
Assets:
Securities available-for-sale	55,821	56,048
States and political subdivisions
Assets:
Securities available-for-sale	220,100	226,128
Corporate bonds
Assets:
Securities available-for-sale	4,961	9,622
Collateralized mortgage obligations
Assets:
Securities available-for-sale	386,679	533,768
Asset-backed Securities
Assets:
Securities available-for-sale	66,916	201,928
Collateralized loan obligations.
Assets:
Securities available-for-sale	173,795	174,746
Fair Value, Inputs, Level 1 [Member]
Assets:
Securities available-for-sale	216,777	212,129
Fair Value, Inputs, Level 2 [Member]
Assets:
Securities available-for-sale	998,775	1,291,219
Loans held-for-sale	2,297	491
Other assets	8,980	6,391
Liabilities:
Other liabilities	14,293	12,264
Fair Value, Inputs, Level 3 [Member]
Assets:
Securities available-for-sale	14,066	36,011
Mortgage servicing rights	11,641	11,189
Fair Value, Measurements, Recurring [Member]
Assets:
Loans held-for-sale	2,297	491
Mortgage servicing rights	11,461	11,189
Total financial assets	1,252,441	1,557,631
Liabilities:
Total	14,293	12,265
Fair Value, Measurements, Recurring [Member] \| Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	9,028	6,516
Liabilities:
Other liabilities	14,293	12,265
Fair Value, Measurements, Recurring [Member] \| Forward Contracts [Member]
Assets:
Other assets	37	76
Fair Value, Measurements, Recurring [Member] \| U.S. Treasury
Assets:
Securities available-for-sale	216,777	212,129
Fair Value, Measurements, Recurring [Member] \| U.S. government agencies
Assets:
Securities available-for-sale	55,821	56,048
Fair Value, Measurements, Recurring [Member] \| Mortgage Backed Securities, Issued by US Government Agencies
Assets:
Securities available-for-sale	104,569	124,990
Fair Value, Measurements, Recurring [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	220,100	226,128
Fair Value, Measurements, Recurring [Member] \| Corporate bonds
Assets:
Securities available-for-sale	4,961	9,622
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations
Assets:
Securities available-for-sale	386,679	533,768
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities
Assets:
Securities available-for-sale	66,916	201,928
Fair Value, Measurements, Recurring [Member] \| Collateralized loan obligations.
Assets:
Securities available-for-sale	173,795	174,746
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets:
Total financial assets	216,777	212,129
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| U.S. Treasury
Assets:
Securities available-for-sale	216,777	212,129
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Loans held-for-sale	2,297	491
Total financial assets	1,010,137	1,298,302
Liabilities:
Total	14,293	12,265
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	9,028	6,516
Liabilities:
Other liabilities	14,293	12,265
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward Contracts [Member]
Assets:
Other assets	37	76
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| U.S. government agencies
Assets:
Securities available-for-sale	55,821	56,048
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Mortgage Backed Securities, Issued by US Government Agencies
Assets:
Securities available-for-sale	104,569	124,990
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	206,034	211,899
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Corporate bonds
Assets:
Securities available-for-sale	4,961	9,622
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized mortgage obligations
Assets:
Securities available-for-sale	386,679	526,998
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Asset-backed Securities
Assets:
Securities available-for-sale	66,916	186,916
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized loan obligations.
Assets:
Securities available-for-sale	173,795	174,746
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets:
Mortgage servicing rights	11,461	11,189
Total financial assets	25,527	47,200
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	$ 14,066	14,229
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Collateralized mortgage obligations
Assets:
Securities available-for-sale		6,770
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Asset-backed Securities
Assets:
Securities available-for-sale		$ 15,012

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Level 3 (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Changes in Level 3
Transfers into Level 3		$ 0
Asset-backed Securities
Changes in Level 3
Beginning balance	$ 15,012
Transfers out of Level 3	(14,885)
Total gains or losses
Included in other comprehensive income	226
Purchases, issuances, sales, and settlements
Settlements	(342)
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	(11)
Collateralized loan obligations.
Changes in Level 3
Beginning balance	6,770
Transfers out of Level 3	(6,764)
Total gains or losses
Included in other comprehensive income	(6)
States and political subdivisions
Changes in Level 3
Beginning balance	14,229	15,236
Total gains or losses
Included in other comprehensive income	(132)	(1,333)
Purchases, issuances, sales, and settlements
Purchases	406
Issuances		519
Settlements	(338)	(1,015)
Ending balance	14,066	13,309
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	(99)	(98)
Mortgage Servicing Rights [Member]
Changes in Level 3
Beginning balance	11,189	7,097
Purchases, issuances, sales, and settlements
Issuances	420	756
Settlements	(380)	(776)
Ending balance	11,461	11,461
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	$ 232	$ 4,384

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative and Qualitative Information (Details) $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	$ 11,461	$ 11,189
Securities available-for-sale, at fair value	1,229,618	1,539,359
Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	11,641	11,189
Securities available-for-sale, at fair value	14,066	36,011
Asset-backed Securities
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	66,916	201,928
States and political subdivisions
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	220,100	226,128
Collateralized mortgage obligations
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	386,679	533,768
Fair Value, Measurements, Recurring [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	11,461	11,189
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	11,461	11,189
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	66,916	201,928
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value		15,012
Fair Value, Measurements, Recurring [Member] \| States and political subdivisions
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	220,100	226,128
Fair Value, Measurements, Recurring [Member] \| States and political subdivisions \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	14,066	14,229
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	386,679	533,768
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value		6,770
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Asset-backed Securities \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value		$ 15,012
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Asset-backed Securities \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.062
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Asset-backed Securities \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.065
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Asset-backed Securities \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.063
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	$ 11,461	$ 11,189
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input		0.090
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input		0.110
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0.090	0.090
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	$ 14,066	$ 14,229
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0.090
Debt Securities, Measurement Input	0.035	0.023
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0.110
Debt Securities, Measurement Input	0.059	0.058
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input	0.043	0.044
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Collateralized mortgage obligations \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value		$ 6,770
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Collateralized mortgage obligations \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.070
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Collateralized mortgage obligations \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.070
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Discount Rate \| Collateralized mortgage obligations \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input		0.070
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Constant Prepayment Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0	0.036
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Constant Prepayment Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0.164	0.273
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Constant Prepayment Rate \| Mortgage Servicing Rights [Member] \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Servicing Asset, Measurement Input	0.062	0.062
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Liquidity Premium \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Minimum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input	0.003	0.003
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Liquidity Premium \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Maximum
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input	0.005	0.005
Fair Value, Measurements, Recurring [Member] \| Measurement Input, Liquidity Premium \| States and political subdivisions \| Discounted Cash Flow Valuation Technique [Member] \| Fair Value, Inputs, Level 3 [Member] \| Weighted Average [Member]
Quantitative information about Level 3 fair value measurements
Debt Securities, Measurement Input	0.005	0.005

Fair Value Measurements - Nonre

Fair Value Measurements - Nonrecurring (Details) - USD ($)	9 Months Ended	12 Months Ended
Fair Value Measurements - Nonrecurring (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Assets and liabilities measured at fair value
Valuation allowance	$ 18,700,000
Carrying value of other real estate owned	407,000	$ 1,561,000
Impaired Loans [Member]
Assets and liabilities measured at fair value
Valuation allowance		65,300,000
Impaired Loans [Member] \| Reported Value Measurement [Member]
Assets and liabilities measured at fair value
Increase (decrease) of specific allocations within the provision for loan losses		12,200,000
Fair Value, Measurements, Nonrecurring [Member]
Assets and liabilities measured at fair value
Total	63,729,000	49,261,000
Fair Value, Measurements, Nonrecurring [Member] \| Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	63,322,000	47,700,000
Valuation allowance	18,700,000	17,600,000
Increase (decrease) of specific allocations within the provision for loan losses	1,000,000
Fair Value, Measurements, Nonrecurring [Member] \| Impaired Loans [Member] \| Reported Value Measurement [Member]
Assets and liabilities measured at fair value
Total	82,000,000
Fair Value, Measurements, Nonrecurring [Member] \| Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	407,000	1,561,000
Carrying value of other real estate owned	407,000	1,600,000
Outstanding balance	525,000	2,500,000
OREO Valuation allowance	118,000	856,000
OREO participations		131,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets and liabilities measured at fair value
Total	63,729,000	49,261,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	63,322,000	47,700,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	$ 407,000	$ 1,561,000

Fair Values of Financial Inst_3

Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial assets:
Cash and due from banks	$ 55,548	$ 56,632
Interest earning deposits with financial institutions	53,485	58,545
Securities available-for-sale	1,229,618	1,539,359
FHLBC and FRBC Stock	35,830	20,530
Mortgage servicing rights	11,461	11,189
Financial liabilities:
Noninterest bearing deposits	1,862,659	2,051,702
Other short-term borrowings	435,000	90,000
Junior subordinated debentures	25,773	25,773
Senior notes		44,585
Reported Value Measurement
Financial assets:
Cash and due from banks	55,548	56,632
Interest earning deposits with financial institutions	53,485	58,545
Securities available-for-sale	1,229,618	1,539,359
FHLBC and FRBC Stock	35,830	20,530
Loans held for sale	2,297	491
Net loans	3,977,814	3,820,129
Mortgage servicing rights	11,641	11,189
Interest rate swap agreements	8,980	6,391
Interest rate lock commitments and forward contracts	37	76
Interest receivable on securities and loans	25,921	22,661
Financial liabilities:
Noninterest bearing deposits	1,862,659	2,051,702
Interest bearing deposits	2,751,661	3,059,021
Securities sold under repurchase agreements	25,894	32,156
Other short-term borrowings	435,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,361	59,297
Senior notes		44,585
Note payable and other borrowings		9,000
Interest rate swap agreements	14,293	12,264
Interest payable on deposits and borrowings	3,066	1,657
Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	55,548	56,632
Interest earning deposits with financial institutions	53,485	58,545
Securities available-for-sale	1,229,618	1,539,359
FHLBC and FRBC Stock	35,830	20,530
Loans held for sale	2,297	491
Net loans	3,855,774	3,681,387
Mortgage servicing rights	11,641	11,189
Interest rate swap agreements	8,980	6,391
Interest rate lock commitments and forward contracts	37	76
Interest receivable on securities and loans	25,921	22,661
Financial liabilities:
Noninterest bearing deposits	1,862,659	2,051,702
Interest bearing deposits	2,738,632	3,042,740
Securities sold under repurchase agreements	25,894	32,156
Other short-term borrowings	435,000	90,000
Junior subordinated debentures	19,072	21,907
Subordinated debentures	46,161	52,322
Senior notes		44,248
Note payable and other borrowings		8,984
Interest rate swap agreements	14,293	12,264
Interest payable on deposits and borrowings	3,066	1,657
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	55,548	56,632
Interest earning deposits with financial institutions	53,485	58,545
Securities available-for-sale	216,777	212,129
Financial liabilities:
Noninterest bearing deposits	1,862,659	2,051,702
Senior notes		44,248
Fair Value, Inputs, Level 2
Financial assets:
Securities available-for-sale	998,775	1,291,219
FHLBC and FRBC Stock	35,830	20,530
Loans held for sale	2,297	491
Interest rate swap agreements	8,980	6,391
Interest rate lock commitments and forward contracts	37	76
Interest receivable on securities and loans	25,921	22,661
Financial liabilities:
Interest bearing deposits	2,738,632	3,042,740
Securities sold under repurchase agreements	25,894	32,156
Other short-term borrowings	435,000	90,000
Junior subordinated debentures	19,072	21,907
Subordinated debentures	46,161	52,322
Note payable and other borrowings		8,984
Interest rate swap agreements	14,293	12,264
Interest payable on deposits and borrowings	3,066	1,657
Fair Value, Inputs, Level 3
Financial assets:
Securities available-for-sale	14,066	36,011
Net loans	3,855,774	3,681,387
Mortgage servicing rights	$ 11,641	$ 11,189

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Fair Value of Derivatives (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) item	Dec. 31, 2022 USD ($) item
Two financial institutions
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Cash collateral pledged with financial institutions, dollars	$ 9,200,000	$ 11,200,000
Number of financial institutions in which cash collateral pledged \| item		2
Interest Rate Swap [Member]
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Cash collateral pledged with financial institutions, dollars	8,100,000	$ 5,300,000
Investment securities pledged with financial institutions, dollars	$ 0	$ 0
Number of financial institutions in which cash collateral pledged \| item	1	1
Designated as Hedging Instrument
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative assets designated as hedging instruments, fair value	$ 4,517,000	$ 2,737,000
Derivative liabilities designated as hedging instruments, fair value	9,830,000	8,610,000
Designated as Hedging Instrument \| Interest Rate Products \| Cash flow hedges of certain variable rate commercial and commercial real estate loan pools
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	300,000,000	250,000,000
Designated as Hedging Instrument \| Interest Rate Products \| Cash flow hedge of junior subordinated debentures and was executed to pay fixed and receive variable rate cash flows
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 25,800,000	$ 25,800,000
Designated as Hedging Instrument \| Interest Rate Products \| OSBC Affiliates
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions \| item	5	4
Notional amount	$ 325,774,000	$ 275,774,000
Derivative assets designated as hedging instruments, fair value	4,517,000
Derivative liabilities designated as hedging instruments, fair value	9,830,000	8,610,000
Designated as Hedging Instrument \| Interest Rate Swap [Member] \| OSBC Affiliates
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative assets designated as hedging instruments, fair value		2,737,000
Not Designated as Hedging Instrument
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative assets designated as hedging instruments, fair value	4,548,000
Derivative liabilities designated as hedging instruments, fair value	4,463,000
Not Designated as Hedging Instrument \| Interest Rate Products
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 105,600,000	$ 110,600,000
Not Designated as Hedging Instrument \| Interest Rate Products \| Commercial Loan Customers
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions \| item	17	21
Notional amount	$ 105,558,000	$ 110,647,000
Derivative assets designated as hedging instruments, fair value	4,463,000	3,654,000
Derivative liabilities designated as hedging instruments, fair value	4,463,000	3,654,000
Not Designated as Hedging Instrument \| Commitments.
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 7,600,000	$ 5,300,000
Not Designated as Hedging Instrument \| Interest Rate Lock Commitments and Forward Contracts.
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions \| item	28	4
Notional amount	$ 7,613,000	$ 43,699,000
Derivative assets designated as hedging instruments, fair value	$ 37,000	125,000
Derivative liabilities designated as hedging instruments, fair value		$ 1,000
Not Designated as Hedging Instrument \| Interest Rate Lock Commitments and Forward Contracts. \| Commercial Loan Customers
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions \| item		28
Notional amount		$ 5,298,000
Derivative assets designated as hedging instruments, fair value		76,000
Not Designated as Hedging Instrument \| Other Contracts
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions \| item	4
Notional amount	$ 44,892,000
Derivative assets designated as hedging instruments, fair value	48,000	3,855,000
Derivative liabilities designated as hedging instruments, fair value		$ 3,655,000
Interest Income
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount to be reclassified as an decrease to interest expense during the next twelve months	7,000,000
Interest Expense
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount to be reclassified as an decrease to interest expense during the next twelve months	$ 708,000

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Effect of Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Amount of loss recognized in OCI on derivative	$ 3,800	$ 4,100
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 3,900	$ 15,000

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Commitments (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Company's contractual commitments due to letters of credit
Total letters of credit	$ 32,869,000	$ 32,869,000	$ 36,096,000
Allowance for credit loss on unfunded commitments	2,700,000	2,700,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	149,000	149,000
Decrease In allowance for credit loss on unfunded commitments	235,000
Commercial unfunded commitments assumptions for decrease in the allowance for credit losses		12,000
Accretion of interest income for decrease in the allowance for credit losses		223,000
Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	526,000	526,000	6,675,000
Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	32,343,000	32,343,000	29,421,000
Commitments to Extend Credit to Borrowers [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	32,802,000	32,802,000	36,029,000
Commitments to Extend Credit to Borrowers [Member] \| Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	526,000	526,000	6,675,000
Commitments to Extend Credit to Borrowers [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	32,276,000	32,276,000	29,354,000
Commitments to Extend Credit to Borrowers [Member] \| Financial Standby Letter of Credit [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	16,716,000	16,716,000	18,879,000
Commitments to Extend Credit to Borrowers [Member] \| Financial Standby Letter of Credit [Member] \| Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	173,000	173,000	3,514,000
Commitments to Extend Credit to Borrowers [Member] \| Financial Standby Letter of Credit [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	16,543,000	16,543,000	15,365,000
Commitments to Extend Credit to Borrowers [Member] \| Performance Guarantee [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	16,086,000	16,086,000	17,150,000
Commitments to Extend Credit to Borrowers [Member] \| Performance Guarantee [Member] \| Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	353,000	353,000	3,161,000
Commitments to Extend Credit to Borrowers [Member] \| Performance Guarantee [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	15,733,000	15,733,000	13,989,000
Commitments to Extend Credit Nonborrowers [Member] \| Performance Guarantee [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	67,000	67,000	67,000
Commitments to Extend Credit Nonborrowers [Member] \| Performance Guarantee [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	67,000	67,000	67,000
Unused lines of Credit [Member]
Company's contractual commitments due to letters of credit
Loan commitments	856,472,000	856,472,000	999,325,000
Unused lines of Credit [Member] \| Fixed [Member]
Company's contractual commitments due to letters of credit
Loan commitments	146,201,000	146,201,000	139,070,000
Unused lines of Credit [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Loan commitments	$ 710,271,000	$ 710,271,000	$ 860,255,000

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 24,335	$ 19,523	$ 73,504	$ 43,790

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Sep. 30, 2023
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