Old Second Bancorp (OSBC) 10-Q8 Aug 232023 Q2 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2023	Aug. 04, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 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		44,675,057
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Central Index Key	0000357173
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 59,466	$ 56,632
Interest earning deposits with financial institutions	53,144	58,545
Cash and cash equivalents	112,610	115,177
Securities available-for-sale, at fair value	1,335,622	1,539,359
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock	36,730	20,530
Loans held-for-sale	1,218	491
Loans	4,015,525	3,869,609
Less: allowance for credit losses on loans	55,314	49,480
Net loans	3,960,211	3,820,129
Premises and equipment, net	72,797	72,355
Other real estate owned	761	1,561
Mortgage servicing rights, at fair value	11,041	11,189
Goodwill	86,478	86,478
Core deposit intangible	12,436	13,678
Bank-owned life insurance ("BOLI")	107,268	106,608
Deferred tax assets, net	39,827	44,750
Other assets	106,943	56,012
Total assets	5,883,942	5,888,317
Deposits:
Noninterest bearing demand	1,897,694	2,051,702
Interest bearing:
Savings, NOW, and money market	2,368,033	2,617,100
Time	451,855	441,921
Total deposits	4,717,582	5,110,723
Securities sold under repurchase agreements	31,532	32,156
Other short-term borrowings	485,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,339	59,297
Senior notes		44,585
Notes payable and other borrowings		9,000
Other liabilities	50,761	55,642
Total liabilities	5,369,987	5,427,176
Stockholders' Equity
Common stock	44,705	44,705
Additional paid-in capital	200,963	202,276
Retained earnings	355,219	310,512
Accumulated other comprehensive loss	(86,186)	(93,124)
Treasury stock	(746)	(3,228)
Total stockholders' equity	513,955	461,141
Total liabilities and stockholders' equity	$ 5,883,942	$ 5,888,317

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 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	44,665,127	44,582,311
Treasury stock, Shares	40,023	122,839

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest and dividend income
Loans, including fees	$ 61,561	$ 38,229	$ 118,771	$ 74,595
Loans held-for-sale	19	32	31	89
Securities:
Taxable	9,930	6,786	20,665	11,954
Tax exempt	1,337	1,297	2,674	2,615
Dividends from FHLBC and FRBC stock	396	263	676	416
Interest bearing deposits with financial institutions	643	782	1,228	1,051
Total interest and dividend income	73,886	47,389	144,045	90,720
Interest expense
Savings, NOW, and money market deposits	1,742	347	2,891	744
Time deposits	1,156	265	1,820	542
Securities sold under repurchase agreements	7	9	16	20
Other short-term borrowings	5,160		7,505
Junior subordinated debentures	281	284	560	564
Subordinated debentures	546	547	1,092	1,093
Senior notes	1,414	578	2,408	1,063
Notes payable and other borrowings		95	87	198
Total interest expense	10,306	2,125	16,379	4,224
Net interest and dividend income	63,580	45,264	127,666	86,496
Provision for credit losses	2,000	550	5,501	550
Net interest and dividend income after provision for credit losses	61,580	44,714	122,165	85,946
Noninterest income
Mortgage servicing rights mark to market gain (loss)	96	82	(429)	3,060
Net gain (loss) on sales of mortgage loans	398	(262)	704	1,233
Securities losses, net	(1,547)	(33)	(3,222)	(33)
Change in cash surrender value of BOLI	418	72	660	196
Card related income	2,690	2,965	4,934	5,532
Other income	773	924	2,262	1,793
Total noninterest income	8,223	9,211	15,573	22,674
Noninterest expense
Salaries and employee benefits	21,798	21,332	44,046	41,299
Occupancy, furniture and equipment	3,639	3,046	7,114	6,745
Computer and data processing	1,290	4,006	3,064	10,274
FDIC insurance	794	702	1,378	1,112
Net teller & bill paying	515	834	1,017	2,741
General bank insurance	306	351	611	666
Amortization of core deposit intangible	618	659	1,242	1,324
Advertising expense	103	194	245	376
Card related expense	1,222	1,057	2,438	1,591
Legal fees	283	179	602	436
Consulting & management fees	520	523	1,310	1,139
Other real estate expense, net	(98)	87	208	75
Other expense	3,840	4,279	7,477	7,723
Total noninterest expense	34,830	37,249	70,752	75,501
Income before income taxes	34,973	16,676	66,986	33,119
Provision for income taxes	9,411	4,429	17,817	8,852
Net income	$ 25,562	$ 12,247	$ 49,169	$ 24,267
Basic earnings per share	$ 0.57	$ 0.28	$ 1.10	$ 0.55
Diluted earnings per share	0.56	0.27	1.08	0.54
Dividends declared per share	$ 0.05	$ 0.05	$ 0.10	$ 0.10
Wealth management
Noninterest income
Service charges on deposits	$ 2,458	$ 2,506	$ 4,728	$ 5,204
Service charges on deposits
Noninterest income
Service charges on deposits	2,362	2,328	4,786	4,402
Secondary mortgage fees
Noninterest income
Service charges on deposits	76	50	135	189
Mortgage servicing income
Noninterest income
Service charges on deposits	$ 499	$ 579	$ 1,015	$ 1,098

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Consolidated Statements of Comprehensive Income (Loss)
Net Income (Loss)	$ 25,562	$ 12,247	$ 49,169	$ 24,267
Unrealized holding (losses) gains on available-for-sale securities arising during the period	(8,360)	(40,485)	7,850	(105,314)
Related tax benefit (expense)	2,342	11,335	(2,194)	29,488
Holding (losses) gains, after tax, on available-for-sale securities	(6,018)	(29,150)	5,656	(75,826)
Less: Reclassification adjustment for the net losses realized during the period
Net realized losses	(1,547)	(33)	(3,222)	(33)
Related tax benefit	434	9	905	9
Net realized losses after tax	(1,113)	(24)	(2,317)	(24)
Other comprehensive (loss) income on available-for-sale securities	(4,905)	(29,126)	7,973	(75,802)
Changes in fair value of derivatives used for cash flow hedges	(3,017)	1,898	(1,415)	2,487
Related tax benefit (expense)	836	(532)	380	(697)
Other comprehensive (loss) income on cash flow hedges	(2,181)	1,366	(1,035)	1,790
Total other comprehensive (loss) income	(7,086)	(27,760)	6,938	(74,012)
Total comprehensive income (loss)	$ 18,476	$ (15,513)	$ 56,107	$ (49,745)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net income	$ 49,169	$ 24,267
Adjustments to reconcile net income to net cash provided by operating activities:
Net premium / discount amortization on securities	1,626	3,300
Securities losses, net	3,222	33
Provision for credit losses	5,501	550
Originations of loans held-for-sale	(24,570)	(49,648)
Proceeds from sales of loans held-for-sale	24,271	53,204
Net gains on sales of mortgage loans	(704)	(1,233)
Mortgage servicing rights mark to market loss (gain)	429	(3,060)
Net accretion of discount on loans and unfunded commitments	(2,093)	(3,841)
Net change in cash surrender value of BOLI	(660)	(196)
Net gains on sale of other real estate owned	(158)	(130)
Provision for other real estate owned valuation losses	269	104
Depreciation of fixed assets and amortization of leasehold improvements	2,135	2,101
Net gains on disposal and transfer of fixed assets	(635)	(1,961)
Amortization of core deposit intangibles	1,242	1,324
Change in current income taxes receivable	(456)	(729)
Deferred tax expense	2,204	2,400
Change in accrued interest receivable and other assets	(50,594)	7,000
Accretion of purchase accounting adjustment on time deposits	(701)	(821)
Change in accrued interest payable and other liabilities	(5,709)	(7,033)
Stock based compensation	1,774	1,469
Net cash provided by operating activities	5,562	27,100
Cash flows from investing activities
Proceeds from maturities and calls, including pay down of securities available-for-sale	73,981	148,429
Proceeds from sales of securities available-for-sale	140,166	3,303
Purchases of securities available-for-sale	(4,186)	(301,129)
Net purchases of FHLBC/FRBC stock	(16,200)	(7,156)
Net change in loans	(143,966)	(199,955)
Proceeds from sales of other real estate owned, net of participations and improvements	1,165	845
Proceeds from disposition of premises and equipment	1,105	7,490
Net purchases of premises and equipment	(3,047)	(1,526)
Net cash provided by (used in) investing activities	49,018	(349,699)
Cash flows from financing activities
Net change in deposits	(392,440)	(122,556)
Net change in securities sold under repurchase agreements	(624)	(12,738)
Net change in other short-term borrowings	395,000
Repayment of term note	(9,000)	(2,000)
Net change in notes payable and other borrowings, excluding term note		(6,056)
Repayment of senior notes	(45,000)
Dividends paid on common stock	(4,478)	(4,423)
Purchase of treasury stock	(605)	(400)
Net cash used in financing activities	(57,147)	(148,173)
Net change in cash and cash equivalents	(2,567)	(470,772)
Cash and cash equivalents at beginning of period	115,177	752,107
Cash and cash equivalents at end of period	$ 112,610	$ 281,335

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			24,267			24,267
Other comprehensive income loss, net of tax				(74,012)		(74,012)
Dividends declared on common stock			(4,447)			(4,447)
Vesting of restricted stock		(2,630)			2,630
Stock based compensation		1,469				1,469
Purchase of treasury stock from taxes withheld on stock awards					(400)	(400)
Balance at Jun. 30, 2022	44,705	201,282	271,831	(65,244)	(3,670)	448,904
Balance at Mar. 31, 2022	44,705	203,190	261,807	(37,484)	(5,900)	466,318
Increase (Decrease) in Stockholders' Equity
Net income			12,247			12,247
Other comprehensive income loss, net of tax				(27,760)		(27,760)
Dividends declared on common stock			(2,223)			(2,223)
Vesting of restricted stock		(2,630)			2,630
Stock based compensation		722				722
Purchase of treasury stock from taxes withheld on stock awards					(400)	(400)
Balance at Jun. 30, 2022	44,705	201,282	271,831	(65,244)	(3,670)	448,904
Balance at Dec. 31, 2022	44,705	202,276	310,512	(93,124)	(3,228)	461,141
Increase (Decrease) in Stockholders' Equity
Net income			49,169			49,169
Other comprehensive income loss, net of tax				6,938		6,938
Dividends declared on common stock			(4,462)			(4,462)
Vesting of restricted stock		(3,087)			3,087
Stock based compensation		1,774				1,774
Purchase of treasury stock from taxes withheld on stock awards					(605)	(605)
Balance at Jun. 30, 2023	44,705	200,963	355,219	(86,186)	(746)	513,955
Balance at Mar. 31, 2023	44,705	200,121	331,890	(79,100)	(746)	496,870
Increase (Decrease) in Stockholders' Equity
Net income			25,562			25,562
Other comprehensive income loss, net of tax				(7,086)		(7,086)
Dividends declared on common stock			(2,233)			(2,233)
Stock based compensation		842				842
Balance at Jun. 30, 2023	$ 44,705	$ 200,963	$ 355,219	$ (86,186)	$ (746)	$ 513,955

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ 496,870	$ 466,318	$ 461,141	$ 502,027
Other comprehensive (loss) income, net of tax	(7,086)	(27,760)	6,938	(74,012)
Balance	$ 513,955	$ 448,904	$ 513,955	$ 448,904
Dividend declared and paid (per share)	$ 0.05	$ 0.05	$ 0.10	$ 0.10
Total Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ (79,100)	$ (37,484)	$ (93,124)	$ 8,768
Other comprehensive (loss) income, net of tax	(7,086)	(27,760)	6,938	(74,012)
Balance	(86,186)	(65,244)	(86,186)	(65,244)
Accumulated Unrealized Gain (Loss) on Securities Available-for-Sale
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(76,014)	(35,537)	(88,892)	11,139
Other comprehensive (loss) income, net of tax	(4,905)	(29,126)	7,973	(75,802)
Balance	(80,919)	(64,663)	(80,919)	(64,663)
Accumulated Unrealized Gain (Loss) on Derivative Instruments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(3,086)	(1,947)	(4,232)	(2,371)
Other comprehensive (loss) income, net of tax	(2,181)	1,366	(1,035)	1,790
Balance	$ (5,267)	$ (581)	$ (5,267)	$ (581)

Basis of Presentation and Chang

Basis of Presentation and Changes in Significant Accounting Policies	6 Months Ended
	Jun. 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 June 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 is 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 have planned accordingly for the transition of existing LIBOR exposures as the final LIBOR cessation date was June 30, 2023. 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 second quarter of 2023, the Company had no changes to significant accounting policies or estimates. Subsequent Events On July 18, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on August 7, 2023, to stockholders of record as of July 28, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on August 7, 2023.

Acquisition

Acquisition	6 Months Ended
Acquisition	Jun. 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	6 Months Ended
Securities	Jun. 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 $21.8 million at June 30, 2023, and $5.6 million at December 31, 2022. FRBC stock was recorded at $14.9 million at June 30, 2023 and December 31, 2022. The following tables summarize the amortized cost and fair value of the securities portfolio at June 30, 2023, and December 31, 2022, and the corresponding amounts of gross unrealized gains and losses: Gross Gross Amortized Unrealized Unrealized Fair June 30, 2023 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,337 $ - $ (9,724) $ 214,613 U.S. government agencies 60,593 - (4,612) 55,981 U.S. government agencies mortgage-backed 129,973 - (14,833) 115,140 States and political subdivisions 241,764 557 (12,787) 229,534 Corporate bonds 5,000 - (118) 4,882 Collateralized mortgage obligations 468,029 - (60,534) 407,495 Asset-backed securities 140,791 - (6,472) 134,319 Collateralized loan obligations 177,523 - (3,865) 173,658 Total securities available-for-sale $ 1,448,010 $ 557 $ (112,945) $ 1,335,622 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 $6.9 million and $6.8 million at June 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 June 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 $ 153,576 0.93 % $ 149,066 Due after one year through five years 151,098 1.19 140,669 Due after five years through ten years 52,232 3.03 48,401 Due after ten years 174,788 3.07 166,874 531,694 1.91 505,010 Mortgage-backed and collateralized mortgage obligations 598,002 2.29 522,635 Asset-backed securities 140,791 5.15 134,319 Collateralized loan obligations 177,523 6.92 173,658 Total securities available-for-sale $ 1,448,010 3.00 % $ 1,335,622 At June 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 June 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 June 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 $ 9,724 $ 214,613 5 $ 9,724 $ 214,613 U.S. government agencies - - - 9 4,612 55,981 9 4,612 55,981 U.S. government agencies mortgage-backed 3 177 2,188 127 14,656 112,952 130 14,833 115,140 States and political subdivisions 31 1,178 92,606 26 11,609 83,930 57 12,787 176,536 Corporate bonds - - - 1 118 4,882 1 118 4,882 Collateralized mortgage obligations 3 381 7,817 149 60,153 399,678 152 60,534 407,495 Asset-backed securities 4 536 29,088 27 5,936 105,231 31 6,472 134,319 Collateralized loan obligations 1 8 2,970 33 3,857 170,688 34 3,865 173,658 Total securities available-for-sale 42 $ 2,280 $ 134,669 377 $ 110,665 $ 1,147,955 419 $ 112,945 $ 1,282,624 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 June 30, 2023, as there was no credit quality deterioration noted. Therefore, no provision for credit losses on securities was recognized for the second quarter of 2023. The following table presents net realized losses on securities available-for-sale for three and six months ended: Three Months Ended Six Months Ended June 30, June 30, Securities available-for-sale 2023 2022 2023 2022 Proceeds from sales of securities $ 73,996 $ 3,303 $ 140,166 $ 3,303 Gross realized losses on securities (1,547) (33) (3,222) (33) Net realized losses $ (1,547) $ (33) $ (3,222) $ (33) Income tax benefit on net realized losses $ 434 $ 9 $ 905 $ 9 Effective tax rate applied 28.1 % 27.3 % 28.1 % 27.3 % As of June 30, 2023, securities valued at $938.5 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	6 Months Ended
Loans and Allowance for Credit Losses on Loans	Jun. 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: June 30, 2023 December 31, 2022 Commercial 1 $ 820,027 $ 840,964 Leases 314,919 277,385 Commercial real estate – investor 1,080,073 987,635 Commercial real estate – owner occupied 824,277 854,879 Construction 189,058 180,535 Residential real estate – investor 55,935 57,353 Residential real estate – owner occupied 218,205 219,718 Multifamily 383,184 323,691 HELOC 102,058 109,202 Other 2 27,789 18,247 Total loans 4,015,525 3,869,609 Allowance for credit losses on loans (55,314) (49,480) Net loans 3 $ 3,960,211 $ 3,820,129 1 Includes $1.2 million and $1.6 million of Paycheck Protection Program (“PPP”) loans at June 30, 2023 and December 31, 2022, respectively. 2 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. 3 Excludes accrued interest receivable of $17.8 million and $15.9 million at June 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 71.0% and 70.6% of the portfolio at June 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 six months ended June 30, 2023 and 2022: Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended June 30, 2023 Commercial $ 11,511 $ 319 $ 380 $ 82 $ 11,532 Leases 2,766 (83) - 7 2,690 Commercial real estate – investor 15,260 4,822 71 20 20,031 Commercial real estate – owner occupied 15,576 (2,816) 201 3 12,562 Construction 1,045 134 - - 1,179 Residential real estate – investor 746 (8) - 5 743 Residential real estate – owner occupied 1,722 110 - 36 1,868 Multifamily 2,665 72 - - 2,737 HELOC 1,788 (118) - 24 1,694 Other 313 (5) 81 51 278 Total $ 53,392 $ 2,427 $ 733 $ 228 $ 55,314 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Six months ended June 30, 2023 Commercial $ 11,968 $ (262) $ 407 $ 233 $ 11,532 Leases 2,865 691 882 16 2,690 Commercial real estate – investor 10,674 9,391 71 37 20,031 Commercial real estate – owner occupied 15,001 (2,243) 201 5 12,562 Construction 1,546 (367) - - 1,179 Residential real estate – investor 768 (49) - 24 743 Residential real estate – owner occupied 2,046 (224) - 46 1,868 Multifamily 2,453 284 - - 2,737 HELOC 1,806 (165) - 53 1,694 Other 353 23 194 96 278 Total $ 49,480 $ 7,079 $ 1,755 $ 510 $ 55,314 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended June 30, 2022 Commercial $ 12,576 $ 1,582 $ 52 $ 8 $ 14,114 Leases 2,573 (837) - - 1,736 Commercial real estate – investor 10,690 (1,029) 243 18 9,436 Commercial real estate – owner occupied 8,139 3,332 - 7 11,478 Construction 2,858 (1,323) - - 1,535 Residential real estate – investor 703 (47) - 5 661 Residential real estate – owner occupied 1,950 (103) - 22 1,869 Multifamily 2,977 (543) - - 2,434 HELOC 1,675 (164) - 31 1,542 Other 167 462 91 45 583 Total $ 44,308 $ 1,330 $ 386 $ 136 $ 45,388 Provision for Allowance for credit losses Beginning (Release of) Ending Six months ended June 30, 2022 Balance Credit Losses Charge-offs Recoveries Balance Commercial $ 11,751 $ 2,407 $ 82 $ 38 $ 14,114 Leases 3,480 (1,744) - - 1,736 Commercial real estate – investor 10,795 (920) 480 41 9,436 Commercial real estate – owner occupied 4,913 6,671 121 15 11,478 Construction 3,373 (1,838) - - 1,535 Residential real estate – investor 760 (114) - 15 661 Residential real estate – owner occupied 2,832 (1,068) - 105 1,869 Multifamily 3,675 (1,241) - - 2,434 HELOC 2,510 (1,035) - 67 1,542 Other 192 532 217 76 583 Total $ 44,281 $ 1,650 $ 900 $ 357 $ 45,388 At June 30, 2023, our allowance for credit losses (“ACL”) on loans totaled $55.3 million, and our ACL on unfunded commitments, included in other liabilities, totaled $3.1 million including related purchase accounting adjustments. During the first six months of 2023, we recorded net provision expense of $5.5 million based on historical loss rate updates driven by higher charge offs in commercial real estate-investor, loan growth in the reserve of approximately $247.3 million, 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 $3.4 million of allowance for unfunded commitments as of June 30, 2023, December 31, 2022 and June 30, 2022, respectively, recorded within Other Liabilities. The total ACL on unfunded commitments listed as of June 30, 2023, December 31, 2022, and June 30, 2022 excludes the purchase accounting adjustment of $372,000, $819,000 and $1.3 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. The following tables presents the collateral dependent loans and the related ACL allocated by segment of loans as of June 30, 2023 and December 31, 2022: Accounts ACL June 30, 2023 Real Estate Receivable Equipment Other Total Allocation Commercial $ 859 $ 91 $ - $ - $ 950 $ 20 Leases - - 637 - 637 637 Commercial real estate – investor 31,464 - - - 31,464 9,159 Commercial real estate – owner occupied 17,691 - - - 17,691 4,586 Construction 116 - - - 116 - Residential real estate – investor 38 - - - 38 - Residential real estate – owner occupied 1,486 - - - 1,486 - Multifamily 591 - - - 591 - HELOC 39 - - - 39 33 Total $ 52,284 $ 91 $ 637 $ - $ 53,012 $ 14,435 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 June 30, 2023 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ - $ 879 $ 91 $ 970 $ 819,057 $ 820,027 $ - Leases 453 37 - 490 314,429 314,919 - Commercial real estate – investor 132 21 26,579 26,732 1,053,341 1,080,073 149 Commercial real estate – owner occupied 1,120 2,037 4,317 7,474 816,803 824,277 - Construction - - 116 116 188,942 189,058 - Residential real estate – investor 447 460 292 1,199 54,736 55,935 - Residential real estate – owner occupied 179 731 2,248 3,158 215,047 218,205 - Multifamily 6,386 326 - 6,712 376,472 383,184 - HELOC 549 11 231 791 101,267 102,058 159 Other 1 2 - 3 27,786 27,789 - Total $ 9,267 $ 4,504 $ 33,874 $ 47,645 $ 3,967,880 $ 4,015,525 $ 308 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 June 30, 2023, and December 31, 2022: Nonaccrual loan detail June 30, 2023 With no ACL December 31, 2022 With no ACL Commercial $ 1,544 $ 1,453 $ 7,189 $ 6,598 Leases 758 121 1,876 - Commercial real estate – investor 31,464 12,368 4,346 4,244 Commercial real estate – owner occupied 18,857 4,329 8,050 3,813 Construction 116 116 251 - Residential real estate – investor 1,445 1,445 1,528 675 Residential real estate – owner occupied 3,660 3,027 3,713 1,572 Multifamily 1,191 1,191 2,538 1,322 HELOC 1,890 1,890 2,109 180 Other - - 2 - Total $ 60,925 $ 25,940 $ 31,602 $ 18,404 The Company recognized $29,000 of interest on nonaccrual loans during the three months ended June 30, 2023. 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 June 30, 2023 were as follows: 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 127,530 $ 226,048 $ 45,876 $ 16,103 $ 9,914 $ 5,986 $ 335,806 $ 1,379 $ 768,642 Special Mention - - 260 - 43 - 28,837 - 29,140 Substandard - 3,010 1,432 2,815 11,354 - 3,634 - 22,245 Total commercial 127,530 229,058 47,568 18,918 21,311 5,986 368,277 1,379 820,027 Leases Pass 86,364 138,055 $ 53,672 20,558 12,036 3,260 - - 313,945 Special Mention - - - - - - - - - Substandard - 637 - - 337 - - - 974 Total leases 86,364 138,692 53,672 20,558 12,373 3,260 - - 314,919 Commercial real estate – investor Pass 175,445 363,460 213,303 112,372 60,729 71,447 7,982 - 1,004,738 Special Mention - 12,885 - 5,409 - - - - 18,294 Substandard 351 17,681 1,947 5,033 10,597 9,119 12,313 - 57,041 Total commercial real estate – investor 175,796 394,026 215,250 122,814 71,326 80,566 20,295 - 1,080,073 Commercial real estate – owner occupied Pass 94,424 145,156 185,929 83,503 57,794 111,532 33,885 - 712,223 Special Mention - 13,538 22,245 35,427 226 2,123 - - 73,559 Substandard - 2,494 15,333 1,164 18,943 561 - - 38,495 Total commercial real estate – owner occupied 94,424 161,188 223,507 120,094 76,963 114,216 33,885 - 824,277 Construction Pass 10,078 73,533 56,855 25,249 1,865 1,216 2,144 - 170,940 Special Mention 307 7,574 - 10,121 - - - - 18,002 Substandard - - - - 116 - - - 116 Total construction 10,385 81,107 56,855 35,370 1,981 1,216 2,144 - 189,058 Residential real estate – investor Pass 2,101 14,624 9,201 6,702 8,029 11,616 1,880 - 54,153 Special Mention - - 68 - - - - - 68 Substandard - 591 - - 421 702 - - 1,714 Total residential real estate – investor 2,101 15,215 9,269 6,702 8,450 12,318 1,880 - 55,935 Residential real estate – owner occupied Pass 9,856 42,915 42,368 27,072 15,462 76,144 728 - 214,545 Special Mention - - - - - - - - - Substandard - 125 - 92 696 2,747 - - 3,660 Total residential real estate – owner occupied 9,856 43,040 42,368 27,164 16,158 78,891 728 - 218,205 Multifamily Pass 51,855 81,441 117,460 68,474 12,666 43,224 343 - 375,463 Special Mention - 373 3,596 337 1,675 549 - - 6,530 Substandard - 924 - - - 267 - - 1,191 Total multifamily 51,855 82,738 121,056 68,811 14,341 44,040 343 - 383,184 HELOC Pass 1,057 2,810 229 1,462 1,648 2,393 90,307 - 99,906 Special Mention - - - - - - - - - Substandard 41 28 1 - - 209 1,873 - 2,152 Total HELOC 1,098 2,838 230 1,462 1,648 2,602 92,180 - 102,058 Other Pass 4,463 2,405 1,577 267 91 103 18,883 27,789 Special Mention - - - - - - - - Substandard - - - - - - - - Total other 4,463 2,405 1,577 267 91 103 18,883 - 27,789 Total loans Pass 563,173 1,090,447 726,470 361,762 180,234 326,921 491,958 1,379 3,742,344 Special Mention 307 34,370 26,169 51,294 1,944 2,672 28,837 - 145,593 Substandard 392 25,490 18,713 9,104 42,464 13,605 17,820 - 127,588 Total loans $ 563,872 $ 1,150,307 $ 771,352 $ 422,160 $ 224,642 $ 343,198 $ 538,615 $ 1,379 $ 4,015,525 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 at June 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 $ - $ - $ - $ 364 $ - $ 43 $ - $ - $ 407 Leases - 870 - - 12 - - - 882 Commercial real estate – investor - - 71 - - - - - 71 Commercial real estate – owner occupied - 22 179 - - - - - 201 Construction - - - - - - - - - Residential real estate – investor - - - - - - - - - Residential real estate – owner occupied - - - - - - - - - Multifamily - - - - - - - - - HELOC - - - - - - - - - Other - 3 24 8 - 159 - - 194 Total $ - $ 895 $ 274 $ 372 $ 12 $ 202 - - $ 1,755 The Company had $215,000 and $600,000 in residential real estate loans in the process of foreclosure as of June 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. Eleven loans, $32.7 million in aggregate, were modified and were experiencing financial difficulty during the six-month period ending June 30, 2023. There were two TDR loan modifications for an aggregate of $41,000 for the three months ended June 30, 2022 and three TDR loan modifications for an aggregate of $1.1 million for the six months ended June 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 June 30, 2023 and was no TDR default activity for the period ended June 30, 2022, for loans that were restructured within the prior 12-month period. The following table presents the amortized costs basis of loans at June 30, 2023 that were both experiencing financial difficulty and modified during the period ended June 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. June 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 $ 859 $ 979 $ - $ 1,838 0.2% Commercial real estate – investor 12,664 - 1,774 14,438 1.3% Commercial real estate – owner occupied 16,318 - - 16,318 2.0% HELOC 60 - - 60 0.1% Total $ 29,901 $ 979 $ 1,774 $ 32,654 0.8% 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 June 30, 2023. June 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 $ - $ - $ - $ - $ 1,838 $ 1,838 Commercial real estate – investor - - 1,774 1,774 12,664 14,438 Commercial real estate – owner occupied - - - - 16,318 16,318 HELOC - - - - 60 60 Total $ - $ - $ 1,774 $ 1,774 $ 30,880 $ 32,654 The following table summarizes the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the period ended June 30, 2023. The Company had one Commercial real estate – investor loan that had a payment modification, change to a single payment at maturity. June 30, 2023 Weighted-Average Term Extension (In Months) Weighted-Average Interest Rate Change Weighted-Average Delay of Payment (In Months) Commercial 4.90 5.00 % - Commercial real estate – investor 11.50 - 7.00 Commercial real estate – owner occupied 12.00 - - HELOC 24.00 - - Total 11.40 5.00 % 7.00

Deposits

Deposits	6 Months Ended
Deposits	Jun. 30, 2023
Deposits
Deposits	Note 5 – Deposits Major classifications of deposits were as follows: June 30, 2023 December 31, 2022 Noninterest bearing demand $ 1,897,694 $ 2,051,702 Savings 1,050,453 1,145,592 NOW accounts 586,121 609,338 Money market accounts 731,459 862,170 Certificates of deposit of less than $100,000 240,848 244,017 Certificates of deposit of $100,000 through $250,000 148,070 157,438 Certificates of deposit of more than $250,000 62,937 40,466 Total deposits $ 4,717,582 $ 5,110,723

Borrowings

Borrowings	6 Months Ended
Borrowings	Jun. 30, 2023
Borrowings
Borrowings	Note 6 – Borrowings The following table is a summary of borrowings as of June 30, 2023 and December 31, 2022. Junior subordinated debentures are discussed in more detail in Note 7. June 30, 2023 December 31, 2022 Securities sold under repurchase agreements $ 31,532 $ 32,156 Other short-term borrowings 485,000 90,000 Junior subordinated debentures 1 25,773 25,773 Subordinated debentures 59,339 59,297 Senior notes - 44,585 Notes payable and other borrowings - 9,000 Total borrowings $ 601,644 $ 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 $31.5 million at June 30, 2023, and $32.2 million at December 31, 2022. The fair value of the pledged collateral was $65.0 million at June 30, 2023, and $71.4 million at December 31, 2022. At June 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 June 30, 2023, the Bank had $485.0 million in short-term advances outstanding under the FHLBC. There were $90.0 million in short-term advances as of December 31, 2022. The Bank assumed $23.4 million of long-term FHLBC advances with our ABC Bank acquisition in 2018, which were recorded in notes payable and other borrowings. The remaining balance of $5.9 million was paid off in full during the second quarter of 2022. FHLBC stock held at June 30, 2023 was valued at $21.8 million, and any potential FHLBC advances were collateralized by loans and securities with a principal balance of $1.48 billion, which carried a FHLBC-calculated combined collateral value of $1.04 billion. The Company had excess collateral of $551.3 million available to secure borrowings at June 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 Notes were offered and sold to eligible purchasers in a private offering in reliance on the exemption from the registration requirements of Section 4(a)(2) of the Securities Act of 1933, as amended and the provisions of Regulation D promulgated thereunder. 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 June 30, 2023 and December 31, 2022, we had $59.3 million of subordinated debentures outstanding, net of deferred issuance costs. 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	6 Months Ended
Junior Subordinated Debentures	Jun. 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 LIBOR . Upon conversion to a floating rate, a cash flow hedge was initiated which resulted in the total interest rate paid on the debt of 4.37% and 4.42% for the quarters ended June 30, 2023 and June 30, 2022, respectively. The Company issued a new $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 June 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	6 Months Ended
Equity Compensation Plans	Jun. 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 June 30, 2023, 967,600 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 units 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 238,149 and 264,589 restricted stock units issued under the 2019 Plan during the six months ended June 30, 2023 and June 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 $1.8 million for the six months ended June 30, 2023 and $1.5 million for the six months ended June 30, 2022. A summary of changes in the Company’s unvested restricted awards for the six months ended June 30, 2023, is as follows: June 30, 2023 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 649,210 $ 12.84 Granted 238,149 17.05 Vested (117,674) 12.26 Forfeited (5,079) 13.55 Unvested at June 30 764,606 $ 14.23 Total unrecognized compensation cost of restricted awards was $6.1 million as of June 30, 2023, which is expected to be recognized over a weighted-average period of 2.06 years.

Earnings Per Share

Earnings Per Share	6 Months Ended
Earnings Per Share	Jun. 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 June 30, Six Months Ended June 30, 2023 2022 2023 2022 Basic earnings per share: Weighted-average common shares outstanding 44,665,127 44,499,395 44,642,250 44,480,326 Net income $ 25,562 $ 12,247 $ 49,169 $ 24,267 Basic earnings per share $ 0.57 $ 0.28 $ 1.10 $ 0.55 Diluted earnings per share: Weighted-average common shares outstanding 44,665,127 44,499,395 44,642,250 44,480,326 Dilutive effect of unvested restricted awards 1 759,291 747,341 728,556 724,134 Diluted average common shares outstanding 45,424,418 45,246,736 45,370,806 45,204,460 Net Income $ 25,562 $ 12,247 $ 49,169 $ 24,267 Diluted earnings per share $ 0.56 $ 0.27 $ 1.08 $ 0.54 1 Includes the common stock equivalents for restricted share rights that are dilutive.

Regulatory & Capital Matters

Regulatory & Capital Matters	6 Months Ended
Regulatory & Capital Matters	Jun. 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 June 30, 2023, the Bank exceeded those thresholds. At June 30, 2023, the Bank’s Tier 1 capital leverage ratio was 9.70%, an increase of 38 basis points from December 31, 2022, and is above the 8.00% objective. The Bank’s total capital ratio was 12.83%, an increase of 8 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 June 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 June 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 June 30, 2023 Common equity tier 1 capital to risk weighted assets Consolidated $ 503,459 10.29 % $ 342,489 7.00 % N/A N/A Old Second Bank 571,923 11.70 342,176 7.00 $ 317,735 6.50 % Total capital to risk weighted assets Consolidated 643,871 13.16 513,727 10.50 N/A N/A Old Second Bank 627,335 12.83 513,407 10.50 488,959 10.00 Tier 1 capital to risk weighted assets Consolidated 528,459 10.80 415,917 8.50 N/A N/A Old Second Bank 571,923 11.70 415,500 8.50 391,058 8.00 Tier 1 capital to average assets Consolidated 528,459 8.96 235,919 4.00 N/A N/A Old Second Bank 571,923 9.70 235,845 4.00 294,806 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 June 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 June 30, 2023, the Bank had capacity to pay dividends of $39.5 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	6 Months Ended
Fair Value Measurements	Jun. 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 six-month period ended June 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 June 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 June 30, 2023 and December 31, 2022, respectively, measured by the Company at fair value on a recurring basis: June 30, 2023 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 214,613 $ - $ - $ 214,613 U.S. government agencies - 55,981 - 55,981 U.S. government agencies mortgage-backed - 115,140 - 115,140 States and political subdivisions - 214,596 14,938 229,534 Corporate bonds - 4,882 - 4,882 Collateralized mortgage obligations - 407,495 - 407,495 Asset-backed securities - 134,319 - 134,319 Collateralized loan obligations - 173,658 - 173,658 Loans held-for-sale - 1,218 - 1,218 Mortgage servicing rights - - 11,041 11,041 Interest rate swap agreements, including risk participation agreement - 6,560 - 6,560 Mortgage banking derivatives - 77 - 77 Total $ 214,613 $ 1,113,926 $ 25,979 $ 1,354,518 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 13,740 $ - $ 13,740 Total $ - $ 13,740 $ - $ 13,740 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: Six Months Ended June 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) - (66) 6,155 Included in other comprehensive income 226 (6) 622 - Purchases, issuances, sales, and settlements Purchases - - 406 - Issuances - - - 281 Settlements (342) - (253) (6,584) Ending balance June 30, 2023 $ - $ - $ 14,938 $ 11,041 Six Months Ended June 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 (65) 3,630 Included in other comprehensive income (1,562) - Purchases, issuances, sales, and settlements Issuances - 565 Settlements (521) (570) Ending balance June 30, 2022 $ 13,088 $ 10,722 The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as of June 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 $ 14,938 Discounted Cash Flow Discount Rate 3.1 – 5.2% 4.5 % Liquidity Premium 0.3 – 0.5% 0.5 % Mortgage servicing rights $ 11,041 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 3.0 – 22.3% 6.3 % 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 June 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: June 30, 2023 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 56,361 $ 56,361 Other real estate owned, net 2 - - 761 761 Total $ - $ - $ 57,122 $ 57,122 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 $81.1 million and a valuation allowance of $24.7 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $7.1 million for the six months ended June 30, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $761,000 at June 30, 2023, which is made up of the outstanding balance of $1.0 million, net of a purchase accounting adjustment of $130,000 and a valuation allowance of $114,000 . 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	6 Months Ended
Fair Values of Financial Instruments	Jun. 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. FHLBC stock is carried at cost and considered a Level 2 fair value. For June 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: June 30, 2023 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 59,466 $ 59,466 $ 59,466 $ - $ - Interest earning deposits with financial institutions 53,144 53,144 53,144 - - Securities available-for-sale 1,335,622 1,335,622 214,613 1,106,071 14,938 FHLBC and FRBC stock 36,730 36,730 - 36,730 - Loans held-for-sale 1,218 1,218 - 1,218 - Net loans 3,960,211 3,833,624 - - 3,833,624 Mortgage servicing rights 11,041 11,041 11,041 Interest rate swap agreements 6,452 6,452 - 6,452 - Interest rate lock commitments and forward contracts 77 77 - 77 - Interest receivable on securities and loans 24,708 24,708 - 24,708 - Financial liabilities: Noninterest bearing deposits $ 1,897,694 $ 1,897,694 $ 1,897,694 $ - $ - Interest bearing deposits 2,819,888 2,805,372 - 2,805,372 - Securities sold under repurchase agreements 31,532 31,532 - 31,532 - Other short-term borrowings 485,000 485,000 - 485,000 - Junior subordinated debentures 25,773 19,588 - 19,588 - Subordinated debentures 59,339 47,339 - 47,339 - Senior notes - - - - - Note payable and other borrowings - - - - - Interest rate swap agreements 13,740 13,740 - 13,740 - Interest payable on deposits and borrowings 1,950 1,950 - 1,950 - 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	6 Months Ended
	Jun. 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 are 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 June 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 June 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 $6.8 million will be reclassified as an increase to interest income and an additional $688,000 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 June 30, 2023 and December 31, 2022 were $106.4 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 June 30, 2023 and December 31, 2022, the Company had $10.4 million and $11.2 million of cash collateral pledged with two correspondent financial institutions, respectively. The Company held $5.7 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 second quarter of 2023 and in the year of 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 June 30, 2023 and December 31, 2022 were $10.0 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 June 30, 2023 and December 31, 2022. Fair Value of Derivative Instruments June 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 2,623 Other Liabilities 9,911 Total derivatives designated as hedging instruments 2,623 9,911 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 18 106,379 Other Assets 3,829 Other Liabilities 3,829 Interest rate lock commitments and forward contracts 40 10,029 Other Assets 77 Other Liabilities - Other contracts 4 43,994 Other Assets 108 Other Liabilities - Total derivatives not designated as hedging instruments 4,014 3,829 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 $5.3 million as of June 30, 2023, and $581,000 as of June 30, 2022. The amount of the loss reclassified from AOCI to interest income on the income statement was $2.4 million for the six months ended June 30, 2023 and $16,000 for the six months ended June 30, 2022, respectively. 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 June 30, 2023, and December 31, 2022. The following table is a summary of letter of credit commitments: June 30, 2023 December 31, 2022 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 2,116 $ 16,370 $ 18,486 $ 3,514 $ 15,365 $ 18,879 Performance standby 1,513 12,511 14,024 3,161 13,989 17,150 3,629 28,881 32,510 6,675 29,354 36,029 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 3,629 $ 28,948 $ 32,577 $ 6,675 $ 29,421 $ 36,096 Unused loan commitments: $ 139,654 $ 765,693 $ 905,347 $ 139,070 $ 860,255 $ 999,325 As of June 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 $372,000 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 $650,000 for the second quarter of 2023, compared to the prior quarter end, is primarily related to 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 $427,000 reduction, as well as a $223,000 decrease by accretion to interest income of the purchase accounting adjustment. 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)	6 Months Ended
	Jun. 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 is 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 have planned accordingly for the transition of existing LIBOR exposures as the final LIBOR cessation date was June 30, 2023. 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 July 18, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on August 7, 2023, to stockholders of record as of July 28, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on August 7, 2023.

Securities (Tables)

Securities (Tables)	6 Months Ended
Securities (Tables)	Jun. 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 June 30, 2023 Cost 1 Gains Losses Value Securities available-for-sale U.S. Treasury $ 224,337 $ - $ (9,724) $ 214,613 U.S. government agencies 60,593 - (4,612) 55,981 U.S. government agencies mortgage-backed 129,973 - (14,833) 115,140 States and political subdivisions 241,764 557 (12,787) 229,534 Corporate bonds 5,000 - (118) 4,882 Collateralized mortgage obligations 468,029 - (60,534) 407,495 Asset-backed securities 140,791 - (6,472) 134,319 Collateralized loan obligations 177,523 - (3,865) 173,658 Total securities available-for-sale $ 1,448,010 $ 557 $ (112,945) $ 1,335,622 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 $6.9 million and $6.8 million at June 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 $ 153,576 0.93 % $ 149,066 Due after one year through five years 151,098 1.19 140,669 Due after five years through ten years 52,232 3.03 48,401 Due after ten years 174,788 3.07 166,874 531,694 1.91 505,010 Mortgage-backed and collateralized mortgage obligations 598,002 2.29 522,635 Asset-backed securities 140,791 5.15 134,319 Collateralized loan obligations 177,523 6.92 173,658 Total securities available-for-sale $ 1,448,010 3.00 % $ 1,335,622
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 June 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 $ 9,724 $ 214,613 5 $ 9,724 $ 214,613 U.S. government agencies - - - 9 4,612 55,981 9 4,612 55,981 U.S. government agencies mortgage-backed 3 177 2,188 127 14,656 112,952 130 14,833 115,140 States and political subdivisions 31 1,178 92,606 26 11,609 83,930 57 12,787 176,536 Corporate bonds - - - 1 118 4,882 1 118 4,882 Collateralized mortgage obligations 3 381 7,817 149 60,153 399,678 152 60,534 407,495 Asset-backed securities 4 536 29,088 27 5,936 105,231 31 6,472 134,319 Collateralized loan obligations 1 8 2,970 33 3,857 170,688 34 3,865 173,658 Total securities available-for-sale 42 $ 2,280 $ 134,669 377 $ 110,665 $ 1,147,955 419 $ 112,945 $ 1,282,624 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 Six Months Ended June 30, June 30, Securities available-for-sale 2023 2022 2023 2022 Proceeds from sales of securities $ 73,996 $ 3,303 $ 140,166 $ 3,303 Gross realized losses on securities (1,547) (33) (3,222) (33) Net realized losses $ (1,547) $ (33) $ (3,222) $ (33) Income tax benefit on net realized losses $ 434 $ 9 $ 905 $ 9 Effective tax rate applied 28.1 % 27.3 % 28.1 % 27.3 %

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses on Loans (Tables)	6 Months Ended
Loans and Allowance for Credit Losses on Loans (Tables)	Jun. 30, 2023
Loans and Allowance for Credit Losses on Loans
Schedule of major classifications of loans	June 30, 2023 December 31, 2022 Commercial 1 $ 820,027 $ 840,964 Leases 314,919 277,385 Commercial real estate – investor 1,080,073 987,635 Commercial real estate – owner occupied 824,277 854,879 Construction 189,058 180,535 Residential real estate – investor 55,935 57,353 Residential real estate – owner occupied 218,205 219,718 Multifamily 383,184 323,691 HELOC 102,058 109,202 Other 2 27,789 18,247 Total loans 4,015,525 3,869,609 Allowance for credit losses on loans (55,314) (49,480) Net loans 3 $ 3,960,211 $ 3,820,129 1 Includes $1.2 million and $1.6 million of Paycheck Protection Program (“PPP”) loans at June 30, 2023 and December 31, 2022, respectively. 2 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. 3 Excludes accrued interest receivable of $17.8 million and $15.9 million at June 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 June 30, 2023 Commercial $ 11,511 $ 319 $ 380 $ 82 $ 11,532 Leases 2,766 (83) - 7 2,690 Commercial real estate – investor 15,260 4,822 71 20 20,031 Commercial real estate – owner occupied 15,576 (2,816) 201 3 12,562 Construction 1,045 134 - - 1,179 Residential real estate – investor 746 (8) - 5 743 Residential real estate – owner occupied 1,722 110 - 36 1,868 Multifamily 2,665 72 - - 2,737 HELOC 1,788 (118) - 24 1,694 Other 313 (5) 81 51 278 Total $ 53,392 $ 2,427 $ 733 $ 228 $ 55,314 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Six months ended June 30, 2023 Commercial $ 11,968 $ (262) $ 407 $ 233 $ 11,532 Leases 2,865 691 882 16 2,690 Commercial real estate – investor 10,674 9,391 71 37 20,031 Commercial real estate – owner occupied 15,001 (2,243) 201 5 12,562 Construction 1,546 (367) - - 1,179 Residential real estate – investor 768 (49) - 24 743 Residential real estate – owner occupied 2,046 (224) - 46 1,868 Multifamily 2,453 284 - - 2,737 HELOC 1,806 (165) - 53 1,694 Other 353 23 194 96 278 Total $ 49,480 $ 7,079 $ 1,755 $ 510 $ 55,314 Provision for Beginning (Release of) Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended June 30, 2022 Commercial $ 12,576 $ 1,582 $ 52 $ 8 $ 14,114 Leases 2,573 (837) - - 1,736 Commercial real estate – investor 10,690 (1,029) 243 18 9,436 Commercial real estate – owner occupied 8,139 3,332 - 7 11,478 Construction 2,858 (1,323) - - 1,535 Residential real estate – investor 703 (47) - 5 661 Residential real estate – owner occupied 1,950 (103) - 22 1,869 Multifamily 2,977 (543) - - 2,434 HELOC 1,675 (164) - 31 1,542 Other 167 462 91 45 583 Total $ 44,308 $ 1,330 $ 386 $ 136 $ 45,388 Provision for Allowance for credit losses Beginning (Release of) Ending Six months ended June 30, 2022 Balance Credit Losses Charge-offs Recoveries Balance Commercial $ 11,751 $ 2,407 $ 82 $ 38 $ 14,114 Leases 3,480 (1,744) - - 1,736 Commercial real estate – investor 10,795 (920) 480 41 9,436 Commercial real estate – owner occupied 4,913 6,671 121 15 11,478 Construction 3,373 (1,838) - - 1,535 Residential real estate – investor 760 (114) - 15 661 Residential real estate – owner occupied 2,832 (1,068) - 105 1,869 Multifamily 3,675 (1,241) - - 2,434 HELOC 2,510 (1,035) - 67 1,542 Other 192 532 217 76 583 Total $ 44,281 $ 1,650 $ 900 $ 357 $ 45,388
Schedule of collateral dependent loans and related loan allowances.	Accounts ACL June 30, 2023 Real Estate Receivable Equipment Other Total Allocation Commercial $ 859 $ 91 $ - $ - $ 950 $ 20 Leases - - 637 - 637 637 Commercial real estate – investor 31,464 - - - 31,464 9,159 Commercial real estate – owner occupied 17,691 - - - 17,691 4,586 Construction 116 - - - 116 - Residential real estate – investor 38 - - - 38 - Residential real estate – owner occupied 1,486 - - - 1,486 - Multifamily 591 - - - 591 - HELOC 39 - - - 39 33 Total $ 52,284 $ 91 $ 637 $ - $ 53,012 $ 14,435 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 June 30, 2023 Past Due Past Due Due Due Current Total Loans Accruing Commercial $ - $ 879 $ 91 $ 970 $ 819,057 $ 820,027 $ - Leases 453 37 - 490 314,429 314,919 - Commercial real estate – investor 132 21 26,579 26,732 1,053,341 1,080,073 149 Commercial real estate – owner occupied 1,120 2,037 4,317 7,474 816,803 824,277 - Construction - - 116 116 188,942 189,058 - Residential real estate – investor 447 460 292 1,199 54,736 55,935 - Residential real estate – owner occupied 179 731 2,248 3,158 215,047 218,205 - Multifamily 6,386 326 - 6,712 376,472 383,184 - HELOC 549 11 231 791 101,267 102,058 159 Other 1 2 - 3 27,786 27,789 - Total $ 9,267 $ 4,504 $ 33,874 $ 47,645 $ 3,967,880 $ 4,015,525 $ 308 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 June 30, 2023 With no ACL December 31, 2022 With no ACL Commercial $ 1,544 $ 1,453 $ 7,189 $ 6,598 Leases 758 121 1,876 - Commercial real estate – investor 31,464 12,368 4,346 4,244 Commercial real estate – owner occupied 18,857 4,329 8,050 3,813 Construction 116 116 251 - Residential real estate – investor 1,445 1,445 1,528 675 Residential real estate – owner occupied 3,660 3,027 3,713 1,572 Multifamily 1,191 1,191 2,538 1,322 HELOC 1,890 1,890 2,109 180 Other - - 2 - Total $ 60,925 $ 25,940 $ 31,602 $ 18,404
Schedule of credit quality indicators by class of loans	Credit quality indicators by loan segment and loan origination date at June 30, 2023 were as follows: 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial Pass $ 127,530 $ 226,048 $ 45,876 $ 16,103 $ 9,914 $ 5,986 $ 335,806 $ 1,379 $ 768,642 Special Mention - - 260 - 43 - 28,837 - 29,140 Substandard - 3,010 1,432 2,815 11,354 - 3,634 - 22,245 Total commercial 127,530 229,058 47,568 18,918 21,311 5,986 368,277 1,379 820,027 Leases Pass 86,364 138,055 $ 53,672 20,558 12,036 3,260 - - 313,945 Special Mention - - - - - - - - - Substandard - 637 - - 337 - - - 974 Total leases 86,364 138,692 53,672 20,558 12,373 3,260 - - 314,919 Commercial real estate – investor Pass 175,445 363,460 213,303 112,372 60,729 71,447 7,982 - 1,004,738 Special Mention - 12,885 - 5,409 - - - - 18,294 Substandard 351 17,681 1,947 5,033 10,597 9,119 12,313 - 57,041 Total commercial real estate – investor 175,796 394,026 215,250 122,814 71,326 80,566 20,295 - 1,080,073 Commercial real estate – owner occupied Pass 94,424 145,156 185,929 83,503 57,794 111,532 33,885 - 712,223 Special Mention - 13,538 22,245 35,427 226 2,123 - - 73,559 Substandard - 2,494 15,333 1,164 18,943 561 - - 38,495 Total commercial real estate – owner occupied 94,424 161,188 223,507 120,094 76,963 114,216 33,885 - 824,277 Construction Pass 10,078 73,533 56,855 25,249 1,865 1,216 2,144 - 170,940 Special Mention 307 7,574 - 10,121 - - - - 18,002 Substandard - - - - 116 - - - 116 Total construction 10,385 81,107 56,855 35,370 1,981 1,216 2,144 - 189,058 Residential real estate – investor Pass 2,101 14,624 9,201 6,702 8,029 11,616 1,880 - 54,153 Special Mention - - 68 - - - - - 68 Substandard - 591 - - 421 702 - - 1,714 Total residential real estate – investor 2,101 15,215 9,269 6,702 8,450 12,318 1,880 - 55,935 Residential real estate – owner occupied Pass 9,856 42,915 42,368 27,072 15,462 76,144 728 - 214,545 Special Mention - - - - - - - - - Substandard - 125 - 92 696 2,747 - - 3,660 Total residential real estate – owner occupied 9,856 43,040 42,368 27,164 16,158 78,891 728 - 218,205 Multifamily Pass 51,855 81,441 117,460 68,474 12,666 43,224 343 - 375,463 Special Mention - 373 3,596 337 1,675 549 - - 6,530 Substandard - 924 - - - 267 - - 1,191 Total multifamily 51,855 82,738 121,056 68,811 14,341 44,040 343 - 383,184 HELOC Pass 1,057 2,810 229 1,462 1,648 2,393 90,307 - 99,906 Special Mention - - - - - - - - - Substandard 41 28 1 - - 209 1,873 - 2,152 Total HELOC 1,098 2,838 230 1,462 1,648 2,602 92,180 - 102,058 Other Pass 4,463 2,405 1,577 267 91 103 18,883 27,789 Special Mention - - - - - - - - Substandard - - - - - - - - Total other 4,463 2,405 1,577 267 91 103 18,883 - 27,789 Total loans Pass 563,173 1,090,447 726,470 361,762 180,234 326,921 491,958 1,379 3,742,344 Special Mention 307 34,370 26,169 51,294 1,944 2,672 28,837 - 145,593 Substandard 392 25,490 18,713 9,104 42,464 13,605 17,820 - 127,588 Total loans $ 563,872 $ 1,150,307 $ 771,352 $ 422,160 $ 224,642 $ 343,198 $ 538,615 $ 1,379 $ 4,015,525 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 $ - $ - $ - $ 364 $ - $ 43 $ - $ - $ 407 Leases - 870 - - 12 - - - 882 Commercial real estate – investor - - 71 - - - - - 71 Commercial real estate – owner occupied - 22 179 - - - - - 201 Construction - - - - - - - - - Residential real estate – investor - - - - - - - - - Residential real estate – owner occupied - - - - - - - - - Multifamily - - - - - - - - - HELOC - - - - - - - - - Other - 3 24 8 - 159 - - 194 Total $ - $ 895 $ 274 $ 372 $ 12 $ 202 - - $ 1,755
Schedule of class of financing receivable	June 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 $ 859 $ 979 $ - $ 1,838 0.2% Commercial real estate – investor 12,664 - 1,774 14,438 1.3% Commercial real estate – owner occupied 16,318 - - 16,318 2.0% HELOC 60 - - 60 0.1% Total $ 29,901 $ 979 $ 1,774 $ 32,654 0.8% June 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 $ - $ - $ - $ - $ 1,838 $ 1,838 Commercial real estate – investor - - 1,774 1,774 12,664 14,438 Commercial real estate – owner occupied - - - - 16,318 16,318 HELOC - - - - 60 60 Total $ - $ - $ 1,774 $ 1,774 $ 30,880 $ 32,654 June 30, 2023 Weighted-Average Term Extension (In Months) Weighted-Average Interest Rate Change Weighted-Average Delay of Payment (In Months) Commercial 4.90 5.00 % - Commercial real estate – investor 11.50 - 7.00 Commercial real estate – owner occupied 12.00 - - HELOC 24.00 - - Total 11.40 5.00 % 7.00

Deposits (Tables)

Deposits (Tables)	6 Months Ended
Deposits (Tables)	Jun. 30, 2023
Deposits
Schedule of major classifications of deposits	June 30, 2023 December 31, 2022 Noninterest bearing demand $ 1,897,694 $ 2,051,702 Savings 1,050,453 1,145,592 NOW accounts 586,121 609,338 Money market accounts 731,459 862,170 Certificates of deposit of less than $100,000 240,848 244,017 Certificates of deposit of $100,000 through $250,000 148,070 157,438 Certificates of deposit of more than $250,000 62,937 40,466 Total deposits $ 4,717,582 $ 5,110,723

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
Borrowings (Tables)	Jun. 30, 2023
Borrowings
Summary of borrowings and junior subordinated debentures	June 30, 2023 December 31, 2022 Securities sold under repurchase agreements $ 31,532 $ 32,156 Other short-term borrowings 485,000 90,000 Junior subordinated debentures 1 25,773 25,773 Subordinated debentures 59,339 59,297 Senior notes - 44,585 Notes payable and other borrowings - 9,000 Total borrowings $ 601,644 $ 260,811 1 See Note 7: Junior Subordinated Debentures

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	6 Months Ended
Equity Compensation Plans (Tables)	Jun. 30, 2023
Equity Compensation Plans
Summary of changes in nonvested shares of restricted share rights	June 30, 2023 Weighted Restricted Average Stock Shares Grant Date and Units Fair Value Unvested at January 1 649,210 $ 12.84 Granted 238,149 17.05 Vested (117,674) 12.26 Forfeited (5,079) 13.55 Unvested at June 30 764,606 $ 14.23

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
Earnings Per Share (Tables)	Jun. 30, 2023
Earnings Per Share
Schedule of Earnings Per Share	Three Months Ended June 30, Six Months Ended June 30, 2023 2022 2023 2022 Basic earnings per share: Weighted-average common shares outstanding 44,665,127 44,499,395 44,642,250 44,480,326 Net income $ 25,562 $ 12,247 $ 49,169 $ 24,267 Basic earnings per share $ 0.57 $ 0.28 $ 1.10 $ 0.55 Diluted earnings per share: Weighted-average common shares outstanding 44,665,127 44,499,395 44,642,250 44,480,326 Dilutive effect of unvested restricted awards 1 759,291 747,341 728,556 724,134 Diluted average common shares outstanding 45,424,418 45,246,736 45,370,806 45,204,460 Net Income $ 25,562 $ 12,247 $ 49,169 $ 24,267 Diluted earnings per share $ 0.56 $ 0.27 $ 1.08 $ 0.54 1 Includes the common stock equivalents for restricted share rights that are dilutive.

Regulatory & Capital Matters (T

Regulatory & Capital Matters (Tables)	6 Months Ended
Regulatory & Capital Matters (Tables)	Jun. 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 June 30, 2023 Common equity tier 1 capital to risk weighted assets Consolidated $ 503,459 10.29 % $ 342,489 7.00 % N/A N/A Old Second Bank 571,923 11.70 342,176 7.00 $ 317,735 6.50 % Total capital to risk weighted assets Consolidated 643,871 13.16 513,727 10.50 N/A N/A Old Second Bank 627,335 12.83 513,407 10.50 488,959 10.00 Tier 1 capital to risk weighted assets Consolidated 528,459 10.80 415,917 8.50 N/A N/A Old Second Bank 571,923 11.70 415,500 8.50 391,058 8.00 Tier 1 capital to average assets Consolidated 528,459 8.96 235,919 4.00 N/A N/A Old Second Bank 571,923 9.70 235,845 4.00 294,806 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)	6 Months Ended
Fair Value Measurements (Tables)	Jun. 30, 2023
Fair Value Measurements
Schedule of balance of assets and liabilities which are measured at fair value on a recurring basis	June 30, 2023 Level 1 Level 2 Level 3 Total Assets: Securities available-for-sale U.S. Treasury $ 214,613 $ - $ - $ 214,613 U.S. government agencies - 55,981 - 55,981 U.S. government agencies mortgage-backed - 115,140 - 115,140 States and political subdivisions - 214,596 14,938 229,534 Corporate bonds - 4,882 - 4,882 Collateralized mortgage obligations - 407,495 - 407,495 Asset-backed securities - 134,319 - 134,319 Collateralized loan obligations - 173,658 - 173,658 Loans held-for-sale - 1,218 - 1,218 Mortgage servicing rights - - 11,041 11,041 Interest rate swap agreements, including risk participation agreement - 6,560 - 6,560 Mortgage banking derivatives - 77 - 77 Total $ 214,613 $ 1,113,926 $ 25,979 $ 1,354,518 Liabilities: Interest rate swap agreements, including risk participation agreements $ - $ 13,740 $ - $ 13,740 Total $ - $ 13,740 $ - $ 13,740 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	Six Months Ended June 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) - (66) 6,155 Included in other comprehensive income 226 (6) 622 - Purchases, issuances, sales, and settlements Purchases - - 406 - Issuances - - - 281 Settlements (342) - (253) (6,584) Ending balance June 30, 2023 $ - $ - $ 14,938 $ 11,041 Six Months Ended June 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 (65) 3,630 Included in other comprehensive income (1,562) - Purchases, issuances, sales, and settlements Issuances - 565 Settlements (521) (570) Ending balance June 30, 2022 $ 13,088 $ 10,722
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 June 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 $ 14,938 Discounted Cash Flow Discount Rate 3.1 – 5.2% 4.5 % Liquidity Premium 0.3 – 0.5% 0.5 % Mortgage servicing rights $ 11,041 Discounted Cash Flow Discount Rate 9.0 – 11.0% 9.0 % Prepayment Speed 3.0 – 22.3% 6.3 % 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	June 30, 2023 Level 1 Level 2 Level 3 Total Individually evaluated loans 1 $ - $ - $ 56,361 $ 56,361 Other real estate owned, net 2 - - 761 761 Total $ - $ - $ 57,122 $ 57,122 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 $81.1 million and a valuation allowance of $24.7 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $7.1 million for the six months ended June 30, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $761,000 at June 30, 2023, which is made up of the outstanding balance of $1.0 million, net of a purchase accounting adjustment of $130,000 and a valuation allowance of $114,000 . 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)	6 Months Ended
Fair Values of Financial Instruments (Tables)	Jun. 30, 2023
Fair Values of Financial Instruments
Schedule of carrying amount and estimated fair values of financial instruments	June 30, 2023 Carrying Fair Amount Value Level 1 Level 2 Level 3 Financial assets: Cash and due from banks $ 59,466 $ 59,466 $ 59,466 $ - $ - Interest earning deposits with financial institutions 53,144 53,144 53,144 - - Securities available-for-sale 1,335,622 1,335,622 214,613 1,106,071 14,938 FHLBC and FRBC stock 36,730 36,730 - 36,730 - Loans held-for-sale 1,218 1,218 - 1,218 - Net loans 3,960,211 3,833,624 - - 3,833,624 Mortgage servicing rights 11,041 11,041 11,041 Interest rate swap agreements 6,452 6,452 - 6,452 - Interest rate lock commitments and forward contracts 77 77 - 77 - Interest receivable on securities and loans 24,708 24,708 - 24,708 - Financial liabilities: Noninterest bearing deposits $ 1,897,694 $ 1,897,694 $ 1,897,694 $ - $ - Interest bearing deposits 2,819,888 2,805,372 - 2,805,372 - Securities sold under repurchase agreements 31,532 31,532 - 31,532 - Other short-term borrowings 485,000 485,000 - 485,000 - Junior subordinated debentures 25,773 19,588 - 19,588 - Subordinated debentures 59,339 47,339 - 47,339 - Senior notes - - - - - Note payable and other borrowings - - - - - Interest rate swap agreements 13,740 13,740 - 13,740 - Interest payable on deposits and borrowings 1,950 1,950 - 1,950 - 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)	6 Months Ended
	Jun. 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	June 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 2,623 Other Liabilities 9,911 Total derivatives designated as hedging instruments 2,623 9,911 Derivatives not designated as hedging instruments Interest rate swaps with commercial loan customers 18 106,379 Other Assets 3,829 Other Liabilities 3,829 Interest rate lock commitments and forward contracts 40 10,029 Other Assets 77 Other Liabilities - Other contracts 4 43,994 Other Assets 108 Other Liabilities - Total derivatives not designated as hedging instruments 4,014 3,829 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	June 30, 2023 December 31, 2022 Fixed Variable Total Fixed Variable Total Letters of credit: Borrower: Financial standby $ 2,116 $ 16,370 $ 18,486 $ 3,514 $ 15,365 $ 18,879 Performance standby 1,513 12,511 14,024 3,161 13,989 17,150 3,629 28,881 32,510 6,675 29,354 36,029 Non-borrower: Performance standby - 67 67 - 67 67 Total letters of credit $ 3,629 $ 28,948 $ 32,577 $ 6,675 $ 29,421 $ 36,096 Unused loan commitments: $ 139,654 $ 765,693 $ 905,347 $ 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	Aug. 07, 2023	Jul. 18, 2023
Subsequent Events
Cash dividend declared (per share)		$ 0.05
Dividends paid	$ 2.2

Acquisition (Details)

Acquisition (Details) - USD ($)	Dec. 01, 2021	Jun. 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	6 Months Ended
	Jun. 30, 2023 USD ($) item	Dec. 31, 2022 USD ($)
Securities Available-for-Sale
Amortized Cost	$ 1,448,010	$ 1,662,819
Gross Unrealized Gains	557	370
Gross Unrealized Losses	(112,945)	(123,830)
Securities available-for-sale	1,335,622	1,539,359
Accrued interest receivable	6,900	6,800
FHLB and FRB Stock
FHLBC stock	21,800	5,600
FRBC stock	14,900	14,900
Securities pledged to secure deposits and for other purposes	938,500	547,800
Other disclosures
Securities available-for-sale	$ 1,335,622	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	$ 224,337	224,054
Gross Unrealized Losses	(9,724)	(11,925)
Securities available-for-sale	214,613	212,129
Other disclosures
Securities available-for-sale	214,613	212,129
U.S. government agencies
Securities Available-for-Sale
Amortized Cost	60,593	61,178
Gross Unrealized Losses	(4,612)	(5,130)
Securities available-for-sale	55,981	56,048
Other disclosures
Securities available-for-sale	55,981	56,048
U.S. government agencies mortgage-backed
Securities Available-for-Sale
Amortized Cost	129,973	140,588
Gross Unrealized Losses	(14,833)	(15,598)
Securities available-for-sale	115,140	124,990
Other disclosures
Securities available-for-sale	115,140	124,990
States and political subdivisions
Securities Available-for-Sale
Amortized Cost	241,764	239,999
Gross Unrealized Gains	557	363
Gross Unrealized Losses	(12,787)	(14,234)
Securities available-for-sale	229,534	226,128
Other disclosures
Securities available-for-sale	229,534	226,128
Corporate bonds
Securities Available-for-Sale
Amortized Cost	5,000	10,000
Gross Unrealized Losses	(118)	(378)
Securities available-for-sale	4,882	9,622
Other disclosures
Securities available-for-sale	4,882	9,622
Collateralized mortgage obligations
Securities Available-for-Sale
Amortized Cost	468,029	596,336
Gross Unrealized Gains		1
Gross Unrealized Losses	(60,534)	(62,569)
Securities available-for-sale	407,495	533,768
Other disclosures
Securities available-for-sale	407,495	533,768
Asset-backed Securities
Securities Available-for-Sale
Amortized Cost	140,791	210,388
Gross Unrealized Gains		6
Gross Unrealized Losses	(6,472)	(8,466)
Securities available-for-sale	134,319	201,928
Other disclosures
Securities available-for-sale	134,319	201,928
Collateralized loan obligations.
Securities Available-for-Sale
Amortized Cost	177,523	180,276
Gross Unrealized Losses	(3,865)	(5,530)
Securities available-for-sale	173,658	174,746
Other disclosures
Securities available-for-sale	$ 173,658	$ 174,746

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 153,576
Due after one year through five years	151,098
Due after five years through ten years	52,232
Due after ten years	174,788
Debt securities excluding securities not due at a single maturity date	531,694
Total	$ 1,448,010	$ 1,662,819
Securities Available-for-Sale, Weighted Average Yield
Due in one year or less (as a percent)	0.93%
Due after one year through five years (as a percent)	1.19%
Due after five years through ten years (as a percent)	3.03%
Due after ten years (as a percent)	3.07%
Debt securities (as a percent)	1.91%
Total (as a percent)	3%
Securities Available-for-Sale, Fair Value
Due in one year or less	$ 149,066
Due after one year through five years	140,669
Due after five years through ten years	48,401
Due after ten years	166,874
Debt securities	505,010
Debt Securities, Available-for-sale, Total	1,335,622	1,539,359
Mortgage-backed and collateralized mortgage obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 598,002
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	$ 522,635
Asset-backed Securities
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	140,791
Total	$ 140,791	210,388
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	5.15%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 134,319
Debt Securities, Available-for-sale, Total	134,319	201,928
Collateralized loan obligations.
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	177,523
Total	$ 177,523	180,276
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	6.92%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 173,658
Debt Securities, Available-for-sale, Total	$ 173,658	$ 174,746

Securities - Unrealized Loss Po

Securities - Unrealized Loss Positions (Details)	3 Months Ended	6 Months Ended
Securities - Unrealized Loss Positions (Details)	Jun. 30, 2023 USD ($) security	Jun. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	42	42	194
Greater than 12 months in an unrealized loss position \| security	377	377	299
Total	419	419	493
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 2,280,000	$ 2,280,000	$ 27,304,000
Greater than 12 months in an unrealized loss position	110,665,000	110,665,000	96,526,000
Total	112,945,000	112,945,000	123,830,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	134,669,000	134,669,000	579,571,000
Greater than 12 months in an unrealized loss position	1,147,955,000	1,147,955,000	906,689,000
Total	1,282,624,000	$ 1,282,624,000	$ 1,486,260,000
Effective duration (in years)		3 years
Credit losses were determined	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	$ 9,724,000	$ 9,724,000	10,900,000
Total	9,724,000	9,724,000	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	214,613,000	214,613,000	188,008,000
Total	$ 214,613,000	$ 214,613,000	$ 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	$ 4,612,000	$ 4,612,000	$ 5,130,000
Total	4,612,000	4,612,000	5,130,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	55,981,000	55,981,000	56,048,000
Total	$ 55,981,000	$ 55,981,000	$ 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	3	3	15
Greater than 12 months in an unrealized loss position \| security	127	127	117
Total	130	130	132
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 177,000	$ 177,000	$ 975,000
Greater than 12 months in an unrealized loss position	14,656,000	14,656,000	14,623,000
Total	14,833,000	14,833,000	15,598,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	2,188,000	2,188,000	11,369,000
Greater than 12 months in an unrealized loss position	112,952,000	112,952,000	113,621,000
Total	$ 115,140,000	$ 115,140,000	$ 124,990,000
States and political subdivisions
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	31	31	45
Greater than 12 months in an unrealized loss position \| security	26	26	15
Total	57	57	60
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 1,178,000	$ 1,178,000	$ 5,800,000
Greater than 12 months in an unrealized loss position	11,609,000	11,609,000	8,434,000
Total	12,787,000	12,787,000	14,234,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	92,606,000	92,606,000	128,770,000
Greater than 12 months in an unrealized loss position	83,930,000	83,930,000	48,877,000
Total	$ 176,536,000	$ 176,536,000	$ 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	$ 118,000	$ 118,000	$ 378,000
Total	118,000	118,000	378,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	4,882,000	4,882,000	9,622,000
Total	$ 4,882,000	$ 4,882,000	$ 9,622,000
Collateralized mortgage obligations
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	3	3	80
Greater than 12 months in an unrealized loss position \| security	149	149	120
Total	152	152	200
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 381,000	$ 381,000	$ 12,895,000
Greater than 12 months in an unrealized loss position	60,153,000	60,153,000	49,674,000
Total	60,534,000	60,534,000	62,569,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	7,817,000	7,817,000	180,624,000
Greater than 12 months in an unrealized loss position	399,678,000	399,678,000	348,880,000
Total	$ 407,495,000	$ 407,495,000	$ 529,504,000
Asset-backed Securities
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	4	4	30
Greater than 12 months in an unrealized loss position \| security	27	27	21
Total	31	31	51
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 536,000	$ 536,000	$ 3,030,000
Greater than 12 months in an unrealized loss position	5,936,000	5,936,000	5,436,000
Total	6,472,000	6,472,000	8,466,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	29,088,000	29,088,000	121,915,000
Greater than 12 months in an unrealized loss position	105,231,000	105,231,000	79,659,000
Total	$ 134,319,000	$ 134,319,000	$ 201,574,000
Collateralized loan obligations.
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position \| security	1	1	23
Greater than 12 months in an unrealized loss position \| security	33	33	11
Total	34	34	34
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 8,000	$ 8,000	$ 3,579,000
Greater than 12 months in an unrealized loss position	3,857,000	3,857,000	1,951,000
Total	3,865,000	3,865,000	5,530,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	2,970,000	2,970,000	112,772,000
Greater than 12 months in an unrealized loss position	170,688,000	170,688,000	61,974,000
Total	$ 173,658,000	$ 173,658,000	$ 174,746,000

Securities - Realized Gain (Los

Securities - Realized Gain (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Securities
Proceeds from sales of securities	$ 73,996	$ 3,303	$ 140,166	$ 3,303
Gross realized losses on securities	(1,547)	(33)	(3,222)	(33)
Net realized losses	(1,547)	(33)	(3,222)	(33)
Income tax benefit on net realized losses	$ 434	$ 9	$ 905	$ 9
Effective tax rate applied (as a percent)	28.10%	27.30%	28.10%	27.30%

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses on Loans - Major Classifications (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Loans
Total Loans	$ 4,015,525		$ 3,869,609
Allowance for credit losses	(55,314)	$ (53,392)	(49,480)	$ (45,388)	$ (44,308)	$ (44,281)
Net loans	3,960,211		3,820,129
Loans and leases receivable, accrued interest receivable	17,800		15,900
Paycheck Protection Program (PPP)
Loans
Total Loans	1,200		1,600
Commercial
Loans
Total Loans	820,027		840,964
Allowance for credit losses	(11,532)	(11,511)	(11,968)	(14,114)	(12,576)	(11,751)
Leases
Loans
Total Loans	314,919		277,385
Allowance for credit losses	(2,690)	(2,766)	(2,865)	(1,736)	(2,573)	(3,480)
Commercial real estate - Investor
Loans
Total Loans	1,080,073		987,635
Allowance for credit losses	(20,031)	(15,260)	(10,674)	(9,436)	(10,690)	(10,795)
Commercial real estate - Owner occupied
Loans
Total Loans	824,277		854,879
Allowance for credit losses	(12,562)	(15,576)	(15,001)	(11,478)	(8,139)	(4,913)
Construction
Loans
Total Loans	189,058		180,535
Residential real estate - Investor
Loans
Total Loans	55,935		57,353
Allowance for credit losses	(743)	(746)	(768)	(661)	(703)	(760)
Residential real estate - Owner occupied
Loans
Total Loans	218,205		219,718
Allowance for credit losses	(1,868)	(1,722)	(2,046)	(1,869)	(1,950)	(2,832)
Multifamily
Loans
Total Loans	383,184		323,691
Allowance for credit losses	(2,737)	(2,665)	(2,453)	(2,434)	(2,977)	(3,675)
HELOC
Loans
Total Loans	102,058		109,202
Allowance for credit losses	(1,694)	$ (1,788)	(1,806)	$ (1,542)	$ (1,675)	$ (2,510)
Other
Loans
Total Loans	$ 27,789		$ 18,247

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses on Loans - Major Classifications - Loan Concentrations (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Real estate \| Loan receivables \| Customer Concentration Risk
Loans
Loans receivable as a percentage of total portfolio	71%	70.60%

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses on Loans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	$ 53,392,000	$ 44,308,000	$ 49,480,000	$ 44,281,000
(Release of) Provision for Credit Losses	2,427,000	1,330,000	7,079,000	1,650,000
Charge-offs	733,000	386,000	1,755,000	900,000
Recoveries	228,000	136,000	510,000	357,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	55,314,000	45,388,000	55,314,000	45,388,000
Less: allowance for credit losses on loans	55,314,000	45,388,000	55,314,000	45,388,000	$ 49,480,000
Net provision expense			5,500,000
Reserve amount			247,300,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	372,000		372,000
Commercial
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	11,511,000	12,576,000	11,968,000	11,751,000
(Release of) Provision for Credit Losses	319,000	1,582,000	(262,000)	2,407,000
Charge-offs	380,000	52,000	407,000	82,000
Recoveries	82,000	8,000	233,000	38,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	11,532,000	14,114,000	11,532,000	14,114,000
Less: allowance for credit losses on loans	11,532,000	14,114,000	11,532,000	14,114,000	11,968,000
Leases
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	2,766,000	2,573,000	2,865,000	3,480,000
(Release of) Provision for Credit Losses	(83,000)	(837,000)	691,000	(1,744,000)
Charge-offs			882,000
Recoveries	7,000		16,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	2,690,000	1,736,000	2,690,000	1,736,000
Less: allowance for credit losses on loans	2,690,000	1,736,000	2,690,000	1,736,000	2,865,000
Commercial real estate - Investor
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	15,260,000	10,690,000	10,674,000	10,795,000
(Release of) Provision for Credit Losses	4,822,000	(1,029,000)	9,391,000	(920,000)
Charge-offs	71,000	243,000	71,000	480,000
Recoveries	20,000	18,000	37,000	41,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	20,031,000	9,436,000	20,031,000	9,436,000
Less: allowance for credit losses on loans	20,031,000	9,436,000	20,031,000	9,436,000	10,674,000
Commercial real estate - Owner occupied
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	15,576,000	8,139,000	15,001,000	4,913,000
(Release of) Provision for Credit Losses	(2,816,000)	3,332,000	(2,243,000)	6,671,000
Charge-offs	201,000		201,000	121,000
Recoveries	3,000	7,000	5,000	15,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	12,562,000	11,478,000	12,562,000	11,478,000
Less: allowance for credit losses on loans	12,562,000	11,478,000	12,562,000	11,478,000	15,001,000
Real estate - construction
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,045,000	2,858,000	1,546,000	3,373,000
(Release of) Provision for Credit Losses	134,000	(1,323,000)	(367,000)	(1,838,000)
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,179,000	1,535,000	1,179,000	1,535,000
Less: allowance for credit losses on loans	1,179,000	1,535,000	1,179,000	1,535,000	1,546,000
Residential real estate - Investor
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	746,000	703,000	768,000	760,000
(Release of) Provision for Credit Losses	(8,000)	(47,000)	(49,000)	(114,000)
Recoveries	5,000	5,000	24,000	15,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	743,000	661,000	743,000	661,000
Less: allowance for credit losses on loans	743,000	661,000	743,000	661,000	768,000
Residential real estate - Owner occupied
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,722,000	1,950,000	2,046,000	2,832,000
(Release of) Provision for Credit Losses	110,000	(103,000)	(224,000)	(1,068,000)
Recoveries	36,000	22,000	46,000	105,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,868,000	1,869,000	1,868,000	1,869,000
Less: allowance for credit losses on loans	1,868,000	1,869,000	1,868,000	1,869,000	2,046,000
Multifamily
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	2,665,000	2,977,000	2,453,000	3,675,000
(Release of) Provision for Credit Losses	72,000	(543,000)	284,000	(1,241,000)
Financing Receivable, Allowance for Credit Loss, Ending Balance	2,737,000	2,434,000	2,737,000	2,434,000
Less: allowance for credit losses on loans	2,737,000	2,434,000	2,737,000	2,434,000	2,453,000
HELOC
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	1,788,000	1,675,000	1,806,000	2,510,000
(Release of) Provision for Credit Losses	(118,000)	(164,000)	(165,000)	(1,035,000)
Recoveries	24,000	31,000	53,000	67,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	1,694,000	1,542,000	1,694,000	1,542,000
Less: allowance for credit losses on loans	1,694,000	1,542,000	1,694,000	1,542,000	1,806,000
Other
Allowance for loan losses:
Financing Receivable, Allowance for Credit Loss, Beginning Balance	313,000	167,000	353,000	192,000
(Release of) Provision for Credit Losses	(5,000)	462,000	23,000	532,000
Charge-offs	81,000	91,000	194,000	217,000
Recoveries	51,000	45,000	96,000	76,000
Financing Receivable, Allowance for Credit Loss, Ending Balance	278,000	583,000	278,000	583,000
Less: allowance for credit losses on loans	278,000	583,000	278,000	583,000	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	3,400,000	2,700,000	3,400,000
Less: allowance for credit losses on loans	2,700,000	3,400,000	2,700,000	3,400,000	4,300,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	372,000	$ 1,300,000	372,000	$ 1,300,000	$ 819,000
Unfunded Loan Commitment \| Other Liabilities [Member]
Allowance for loan losses:
ACL on unfunded commitments	$ 3,100,000		$ 3,100,000

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	$ 3,960,211		$ 3,820,129
Less: allowance for credit losses on loans	55,314	$ 53,392	49,480	$ 45,388	$ 44,308	$ 44,281
Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	53,012		50,478
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	52,284		40,641
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	91		5,915
Equipment \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	637		1,248
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
Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	14,435		10,744
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	11,532	11,511	11,968	14,114	12,576	11,751
Commercial \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	950		7,162
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	859		883
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	91		5,915
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
Commercial \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	20		569
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	2,690	2,766	2,865	1,736	2,573	3,480
Leases \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	637		1,248
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	637		1,248
Leases \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	637		1,248
Commercial real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	20,031	15,260	10,674	9,436	10,690	10,795
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	31,464		16,576
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	31,464		16,576
Commercial real estate - Investor \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	9,159		2,875
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	12,562	15,576	15,001	11,478	8,139	4,913
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	17,691		21,498
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	17,691		19,188
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
Commercial real estate - Owner occupied \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	4,586		5,808
Construction \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	116
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	116
Residential real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	743	746	768	661	703	760
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	38		675
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	38		675
Residential real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	1,868	1,722	2,046	1,869	1,950	2,832
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	1,486		1,817
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	1,486		1,817
Residential real estate - Owner occupied \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans			244
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	2,737	2,665	2,453	2,434	2,977	3,675
Multifamily \| Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, including deferred loan loan costs and PCI	591		1,322
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	591		1,322
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	1,694	1,788	1,806	1,542	1,675	2,510
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		180
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		180
HELOC \| Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	33
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: allowance for credit losses on loans	$ 278	$ 313	$ 353	$ 583	$ 167	$ 192

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses on Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Aged analysis of past due loans
Total Loans	$ 4,015,525	$ 3,869,609
Total loans, including deferred loan loan costs and PCI	3,960,211	3,820,129
Recorded Investment 90 days or Greater Past Due and Accruing	308	1,262
Special Mention [Member]
Aged analysis of past due loans
Total Loans	145,593	179,029
Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	47,645
Total Past Due Including PCI loans		22,214
30 to 59 Days Past Due
Aged analysis of past due loans
Current	9,267
Total Past Due Including PCI loans		6,326
60 to 89 Days Past Due
Aged analysis of past due loans
Current	4,504
Total Past Due Including PCI loans		2,874
90 Days or Greater Past Due
Aged analysis of past due loans
Current	33,874
Total Past Due Including PCI loans		13,014
Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	3,967,880
Current including PCI Loans		3,847,395
Commercial
Aged analysis of past due loans
Total Loans	820,027	840,964
Recorded Investment 90 days or Greater Past Due and Accruing		460
Commercial \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	29,140	27,047
Commercial \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	970	1,840
Commercial \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current		3
Commercial \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	879	1,012
Commercial \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	91	825
Commercial \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	819,057	839,124
Leases
Aged analysis of past due loans
Total Loans	314,919	277,385
Leases \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	490	1,083
Leases \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	453	447
Leases \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	37	22
Leases \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current		614
Leases \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	314,429	276,302
Commercial real estate - Investor
Aged analysis of past due loans
Total Loans	1,080,073	987,635
Recorded Investment 90 days or Greater Past Due and Accruing	149
Commercial real estate - Investor \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	18,294	32,655
Commercial real estate - Investor \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	26,732	8,867
Commercial real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	132	3,276
Commercial real estate - Investor \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	21	1,276
Commercial real estate - Investor \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	26,579	4,315
Commercial real estate - Investor \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	1,053,341	978,768
Commercial real estate - Owner occupied
Aged analysis of past due loans
Total Loans	824,277	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	73,559	97,763
Commercial real estate - Owner occupied \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	7,474	2,697
Commercial real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	1,120	373
Commercial real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	2,037	113
Commercial real estate - Owner occupied \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	4,317	2,211
Commercial real estate - Owner occupied \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	816,803	852,182
Real estate - construction
Aged analysis of past due loans
Total Loans	189,058	180,535
Real estate - construction \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	116	130
Real estate - construction \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current		14
Real estate - construction \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	116	116
Real estate - construction \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	188,942	180,405
Residential real estate - Investor
Aged analysis of past due loans
Total Loans	55,935	57,353
Recorded Investment 90 days or Greater Past Due and Accruing		144
Residential real estate - Investor \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	68	70
Residential real estate - Investor \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	1,199	1,432
Residential real estate - Investor \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	447	445
Residential real estate - Investor \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	460
Residential real estate - Investor \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	292	987
Residential real estate - Investor \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	54,736	55,921
Residential real estate - Owner occupied
Aged analysis of past due loans
Total Loans	218,205	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	3,158	3,423
Residential real estate - Owner occupied \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	179	1,191
Residential real estate - Owner occupied \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	731
Residential real estate - Owner occupied \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	2,248	2,232
Residential real estate - Owner occupied \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	215,047	216,295
Multifamily
Aged analysis of past due loans
Total Loans	383,184	323,691
Multifamily \| Special Mention [Member]
Aged analysis of past due loans
Total Loans	6,530	6,086
Multifamily \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	6,712	1,950
Multifamily \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	6,386	267
Multifamily \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	326	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	376,472	321,741
HELOC
Aged analysis of past due loans
Total Loans	102,058	109,202
Recorded Investment 90 days or Greater Past Due and Accruing	159
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	791	773
HELOC \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	549	291
HELOC \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	11	90
HELOC \| 90 Days or Greater Past Due
Aged analysis of past due loans
Current	231	392
HELOC \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	101,267	108,429
Other
Aged analysis of past due loans
Total Loans	27,789	18,247
Other \| Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	3	19
Other \| 30 to 59 Days Past Due
Aged analysis of past due loans
Current	1	19
Other \| 60 to 89 Days Past Due
Aged analysis of past due loans
Current	2
Other \| Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	$ 27,786	$ 18,228

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses on Loans - Nonaccruals (Details) - USD ($)	3 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non accrual including PCI Loans	$ 60,925,000	$ 31,602,000
Nonaccrual with no ACL	25,940,000	18,404,000
Interest on nonaccrual loans	29,000
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,544,000	7,189,000
Nonaccrual with no ACL	1,453,000	6,598,000
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	758,000	1,876,000
Nonaccrual with no ACL	121,000
Commercial real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	31,464,000	4,346,000
Nonaccrual with no ACL	12,368,000	4,244,000
Commercial real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	18,857,000	8,050,000
Nonaccrual with no ACL	4,329,000	3,813,000
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	116,000	251,000
Nonaccrual with no ACL	116,000
Residential real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,445,000	1,528,000
Nonaccrual with no ACL	1,445,000	675,000
Residential real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	3,660,000	3,713,000
Nonaccrual with no ACL	3,027,000	1,572,000
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,191,000	2,538,000
Nonaccrual with no ACL	1,191,000	1,322,000
HELOC
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,890,000	2,109,000
Nonaccrual with no ACL	$ 1,890,000	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		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			$ 895,000
2021			274,000
2020			372,000
2019			12,000
Prior			202,000
Total	$ 733,000	$ 386,000	1,755,000	$ 900,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	563,872,000		563,872,000		$ 1,207,348,000
2022 / 2021	1,150,307,000		1,150,307,000		886,935,000
2021 / 2020	771,352,000		771,352,000		476,753,000
2020 / 2019	422,160,000		422,160,000		257,206,000
2019 / 2018	224,642,000		224,642,000		167,647,000
Prior	343,198,000		343,198,000		245,580,000
Revolving Loans	538,615,000		538,615,000		628,140,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	4,015,525,000		4,015,525,000		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	563,173,000		563,173,000		1,165,744,000
2022 / 2021	1,090,447,000		1,090,447,000		837,389,000
2021 / 2020	726,470,000		726,470,000		401,848,000
2020 / 2019	361,762,000		361,762,000		183,707,000
2019 / 2018	180,234,000		180,234,000		165,368,000
Prior	326,921,000		326,921,000		226,741,000
Revolving Loans	491,958,000		491,958,000		600,854,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	3,742,344,000		3,742,344,000		3,581,651,000
Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	307,000		307,000		16,031,000
2022 / 2021	34,370,000		34,370,000		27,684,000
2021 / 2020	26,169,000		26,169,000		70,495,000
2020 / 2019	51,294,000		51,294,000		31,990,000
2019 / 2018	1,944,000		1,944,000		1,301,000
Prior	2,672,000		2,672,000		10,131,000
Revolving Loans	28,837,000		28,837,000		21,397,000
Total Loans	145,593,000		145,593,000		179,029,000
Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	392,000		392,000		25,573,000
2022 / 2021	25,490,000		25,490,000		21,862,000
2021 / 2020	18,713,000		18,713,000		4,410,000
2020 / 2019	9,104,000		9,104,000		41,509,000
2019 / 2018	42,464,000		42,464,000		978,000
Prior	13,605,000		13,605,000		8,708,000
Revolving Loans	17,820,000		17,820,000		5,889,000
Total Loans	127,588,000		127,588,000		108,929,000
Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2020			364,000
Prior			43,000
Total	380,000	52,000	407,000	82,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	127,530,000		127,530,000		231,889,000
2022 / 2021	229,058,000		229,058,000		73,327,000
2021 / 2020	47,568,000		47,568,000		25,760,000
2020 / 2019	18,918,000		18,918,000		27,350,000
2019 / 2018	21,311,000		21,311,000		6,964,000
Prior	5,986,000		5,986,000		2,651,000
Revolving Loans	368,277,000		368,277,000		473,023,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	820,027,000		820,027,000		840,964,000
Commercial \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	127,530,000		127,530,000		225,056,000
2022 / 2021	226,048,000		226,048,000		70,608,000
2021 / 2020	45,876,000		45,876,000		21,597,000
2020 / 2019	16,103,000		16,103,000		12,742,000
2019 / 2018	9,914,000		9,914,000		6,957,000
Prior	5,986,000		5,986,000		2,651,000
Revolving Loans	335,806,000		335,806,000		447,821,000
Revolving Loans Converted To Term Loans	1,379,000		1,379,000
Total Loans	768,642,000		768,642,000		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					272,000
2021 / 2020	260,000		260,000		1,182,000
2020 / 2019					2,432,000
2019 / 2018	43,000		43,000
Revolving Loans	28,837,000		28,837,000		21,286,000
Total Loans	29,140,000		29,140,000		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	3,010,000		3,010,000		2,447,000
2021 / 2020	1,432,000		1,432,000		2,981,000
2020 / 2019	2,815,000		2,815,000		12,176,000
2019 / 2018	11,354,000		11,354,000		7,000
Revolving Loans	3,634,000		3,634,000		3,916,000
Total Loans	22,245,000		22,245,000		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	215,000		215,000		600,000
Leases
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			870,000
2019			12,000
Total			882,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	86,364,000		86,364,000		162,985,000
2022 / 2021	138,692,000		138,692,000		64,203,000
2021 / 2020	53,672,000		53,672,000		26,995,000
2020 / 2019	20,558,000		20,558,000		17,923,000
2019 / 2018	12,373,000		12,373,000		4,449,000
Prior	3,260,000		3,260,000		830,000
Total Loans	314,919,000		314,919,000		277,385,000
Leases \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	86,364,000		86,364,000		161,379,000
2022 / 2021	138,055,000		138,055,000		64,203,000
2021 / 2020	53,672,000		53,672,000		26,995,000
2020 / 2019	20,558,000		20,558,000		17,653,000
2019 / 2018	12,036,000		12,036,000		4,449,000
Prior	3,260,000		3,260,000		830,000
Total Loans	313,945,000		313,945,000		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	637,000		637,000
2020 / 2019					270,000
2019 / 2018	337,000		337,000
Total Loans	974,000		974,000		1,876,000
Commercial real estate - Investor
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2021			71,000
Total	71,000	243,000	71,000	480,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	175,796,000		175,796,000		433,775,000
2022 / 2021	394,026,000		394,026,000		232,121,000
2021 / 2020	215,250,000		215,250,000		123,981,000
2020 / 2019	122,814,000		122,814,000		84,814,000
2019 / 2018	71,326,000		71,326,000		48,005,000
Prior	80,566,000		80,566,000		57,826,000
Revolving Loans	20,295,000		20,295,000		7,113,000
Total Loans	1,080,073,000		1,080,073,000		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	175,445,000		175,445,000		416,094,000
2022 / 2021	363,460,000		363,460,000		228,686,000
2021 / 2020	213,303,000		213,303,000		118,491,000
2020 / 2019	112,372,000		112,372,000		63,845,000
2019 / 2018	60,729,000		60,729,000		46,935,000
Prior	71,447,000		71,447,000		46,406,000
Revolving Loans	7,982,000		7,982,000		7,113,000
Total Loans	1,004,738,000		1,004,738,000		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	12,885,000		12,885,000		1,417,000
2021 / 2020					5,490,000
2020 / 2019	5,409,000		5,409,000		10,206,000
2019 / 2018					1,070,000
Prior					9,123,000
Total Loans	18,294,000		18,294,000		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	351,000		351,000		12,332,000
2022 / 2021	17,681,000		17,681,000		2,018,000
2021 / 2020	1,947,000		1,947,000
2020 / 2019	5,033,000		5,033,000		10,763,000
2019 / 2018	10,597,000		10,597,000
Prior	9,119,000		9,119,000		2,297,000
Revolving Loans	12,313,000		12,313,000
Total Loans	57,041,000		57,041,000		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			179,000
Total	201,000		201,000	121,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	94,424,000		94,424,000		180,679,000
2022 / 2021	161,188,000		161,188,000		263,102,000
2021 / 2020	223,507,000		223,507,000		155,044,000
2020 / 2019	120,094,000		120,094,000		81,981,000
2019 / 2018	76,963,000		76,963,000		49,598,000
Prior	114,216,000		114,216,000		90,730,000
Revolving Loans	33,885,000		33,885,000		33,745,000
Total Loans	824,277,000		824,277,000		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	94,424,000		94,424,000		169,703,000
2022 / 2021	145,156,000		145,156,000		223,731,000
2021 / 2020	185,929,000		185,929,000		105,669,000
2020 / 2019	83,503,000		83,503,000		47,351,000
2019 / 2018	57,794,000		57,794,000		49,367,000
Prior	111,532,000		111,532,000		86,660,000
Revolving Loans	33,885,000		33,885,000		33,745,000
Total Loans	712,223,000		712,223,000		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					8,430,000
2022 / 2021	13,538,000		13,538,000		22,242,000
2021 / 2020	22,245,000		22,245,000		48,184,000
2020 / 2019	35,427,000		35,427,000		17,668,000
2019 / 2018	226,000		226,000		231,000
Prior	2,123,000		2,123,000		1,008,000
Total Loans	73,559,000		73,559,000		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	2,494,000		2,494,000		17,129,000
2021 / 2020	15,333,000		15,333,000		1,191,000
2020 / 2019	1,164,000		1,164,000		16,962,000
2019 / 2018	18,943,000		18,943,000
Prior	561,000		561,000		3,062,000
Total Loans	38,495,000		38,495,000		40,890,000
Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	10,385,000		10,385,000		54,275,000
2022 / 2021	81,107,000		81,107,000		65,758,000
2021 / 2020	56,855,000		56,855,000		54,839,000
2020 / 2019	35,370,000		35,370,000		2,506,000
2019 / 2018	1,981,000		1,981,000		226,000
Prior	1,216,000		1,216,000		1,408,000
Revolving Loans	2,144,000		2,144,000		1,523,000
Total Loans	189,058,000		189,058,000		180,535,000
Construction \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	10,078,000		10,078,000		53,058,000
2022 / 2021	73,533,000		73,533,000		65,758,000
2021 / 2020	56,855,000		56,855,000		39,542,000
2020 / 2019	25,249,000		25,249,000		2,390,000
2019 / 2018	1,865,000		1,865,000		226,000
Prior	1,216,000		1,216,000		1,408,000
Revolving Loans	2,144,000		2,144,000		1,523,000
Total Loans	170,940,000		170,940,000		163,905,000
Construction \| Special Mention [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	307,000		307,000
2022 / 2021	7,574,000		7,574,000
2021 / 2020					15,297,000
2020 / 2019	10,121,000		10,121,000
Total Loans	18,002,000		18,002,000		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
2020 / 2019					116,000
2019 / 2018	116,000		116,000
Total Loans	116,000		116,000		1,333,000
Residential real estate - Investor
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	2,101,000		2,101,000		15,358,000
2022 / 2021	15,215,000		15,215,000		9,980,000
2021 / 2020	9,269,000		9,269,000		6,945,000
2020 / 2019	6,702,000		6,702,000		9,084,000
2019 / 2018	8,450,000		8,450,000		5,039,000
Prior	12,318,000		12,318,000		9,956,000
Revolving Loans	1,880,000		1,880,000		991,000
Total Loans	55,935,000		55,935,000		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	2,101,000		2,101,000		14,737,000
2022 / 2021	14,624,000		14,624,000		9,910,000
2021 / 2020	9,201,000		9,201,000		6,945,000
2020 / 2019	6,702,000		6,702,000		8,585,000
2019 / 2018	8,029,000		8,029,000		4,853,000
Prior	11,616,000		11,616,000		9,548,000
Revolving Loans	1,880,000		1,880,000		991,000
Total Loans	54,153,000		54,153,000		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	68,000		68,000
Total Loans	68,000		68,000		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	591,000		591,000
2020 / 2019					499,000
2019 / 2018	421,000		421,000		186,000
Prior	702,000		702,000		408,000
Total Loans	1,714,000		1,714,000		1,714,000
Residential real estate - Owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	9,856,000		9,856,000		42,016,000
2022 / 2021	43,040,000		43,040,000		45,151,000
2021 / 2020	42,368,000		42,368,000		28,655,000
2020 / 2019	27,164,000		27,164,000		16,869,000
2019 / 2018	16,158,000		16,158,000		12,283,000
Prior	78,891,000		78,891,000		73,106,000
Revolving Loans	728,000		728,000		1,638,000
Total Loans	218,205,000		218,205,000		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	9,856,000		9,856,000		41,885,000
2022 / 2021	42,915,000		42,915,000		44,884,000
2021 / 2020	42,368,000		42,368,000		28,418,000
2020 / 2019	27,072,000		27,072,000		16,146,000
2019 / 2018	15,462,000		15,462,000		12,152,000
Prior	76,144,000		76,144,000		70,741,000
Revolving Loans	728,000		728,000		1,638,000
Total Loans	214,545,000		214,545,000		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	125,000		125,000		267,000
2021 / 2020					237,000
2020 / 2019	92,000		92,000		723,000
2019 / 2018	696,000		696,000		131,000
Prior	2,747,000		2,747,000		2,365,000
Total Loans	3,660,000		3,660,000		3,854,000
Multifamily
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	51,855,000		51,855,000		79,354,000
2022 / 2021	82,738,000		82,738,000		129,940,000
2021 / 2020	121,056,000		121,056,000		52,604,000
2020 / 2019	68,811,000		68,811,000		14,809,000
2019 / 2018	14,341,000		14,341,000		40,290,000
Prior	44,040,000		44,040,000		6,365,000
Revolving Loans	343,000		343,000		329,000
Total Loans	383,184,000		383,184,000		323,691,000
Multifamily \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	51,855,000		51,855,000		76,877,000
2022 / 2021	81,441,000		81,441,000		126,257,000
2021 / 2020	117,460,000		117,460,000		52,262,000
2020 / 2019	68,474,000		68,474,000		13,125,000
2019 / 2018	12,666,000		12,666,000		39,703,000
Prior	43,224,000		43,224,000		6,098,000
Revolving Loans	343,000		343,000		329,000
Total Loans	375,463,000		375,463,000		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	373,000		373,000		3,683,000
2021 / 2020	3,596,000		3,596,000		342,000
2020 / 2019	337,000		337,000		1,684,000
2019 / 2018	1,675,000		1,675,000
Prior	549,000		549,000
Total Loans	6,530,000		6,530,000		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	924,000		924,000
2019 / 2018					587,000
Prior	267,000		267,000		267,000
Total Loans	1,191,000		1,191,000		2,954,000
HELOC
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,098,000		1,098,000		2,822,000
2022 / 2021	2,838,000		2,838,000		518,000
2021 / 2020	230,000		230,000		1,497,000
2020 / 2019	1,462,000		1,462,000		1,703,000
2019 / 2018	1,648,000		1,648,000		724,000
Prior	2,602,000		2,602,000		2,597,000
Revolving Loans	92,180,000		92,180,000		99,341,000
Total Loans	102,058,000		102,058,000		109,202,000
HELOC \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,057,000		1,057,000		2,760,000
2022 / 2021	2,810,000		2,810,000		517,000
2021 / 2020	229,000		229,000		1,497,000
2020 / 2019	1,462,000		1,462,000		1,703,000
2019 / 2018	1,648,000		1,648,000		657,000
Prior	2,393,000		2,393,000		2,288,000
Revolving Loans	90,307,000		90,307,000		97,258,000
Total Loans	99,906,000		99,906,000		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	41,000		41,000		62,000
2022 / 2021	28,000		28,000		1,000
2021 / 2020	1,000		1,000
2019 / 2018					67,000
Prior	209,000		209,000		309,000
Revolving Loans	1,873,000		1,873,000		1,972,000
Total Loans	2,152,000		2,152,000		2,411,000
Other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022			3,000
2021			24,000
2020			8,000
Prior			159,000
Total	81,000	$ 91,000	194,000	$ 217,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	4,463,000		4,463,000		4,195,000
2022 / 2021	2,405,000		2,405,000		2,835,000
2021 / 2020	1,577,000		1,577,000		433,000
2020 / 2019	267,000		267,000		167,000
2019 / 2018	91,000		91,000		69,000
Prior	103,000		103,000		111,000
Revolving Loans	18,883,000		18,883,000		10,437,000
Total Loans	27,789,000		27,789,000		18,247,000
Other \| Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	4,463,000		4,463,000		4,195,000
2022 / 2021	2,405,000		2,405,000		2,835,000
2021 / 2020	1,577,000		1,577,000		432,000
2020 / 2019	267,000		267,000		167,000
2019 / 2018	91,000		91,000		69,000
Prior	103,000		103,000		111,000
Revolving Loans	18,883,000		18,883,000		10,436,000
Total Loans	$ 27,789,000		$ 27,789,000		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		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Loans by risk rating
2022			$ 895
2021			274
2020			372
2019			12
Prior			202
Total	$ 733	$ 386	1,755	$ 900
Commercial
Loans by risk rating
2020			364
Prior			43
Total	380	52	407	82
Leases
Loans by risk rating
2022			870
2019			12
Total			882
Commercial real estate - Investor
Loans by risk rating
2021			71
Total	71	243	71	480
Commercial real estate - Owner occupied
Loans by risk rating
2022			22
2021			179
Total	201		201	121
Other
Loans by risk rating
2022			3
2021			24
2020			8
Prior			159
Total	$ 81	$ 91	$ 194	$ 217

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses on Loans - TDR (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2022 USD ($) item	Jun. 30, 2023 USD ($) loan item	Jun. 30, 2022 USD ($) item
Troubled debt restructurings - modified during the period
Number of TDR loan modifications	2	11	3
Total Loans modified		$ 32,654,000
TDR's defaulted
Pre-modification outstanding recorded investment during the period	$ 41,000		$ 1,100,000
Other information
Number of payment modification \| item		1
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		$ 1,838,000

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses on Loans - Loan Modifications (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Financing Receivable
Total Loans modified	$ 32,654
Total Loan Segment Modified to Total Loan Segment	0.80%
Weighted-Average Term Extension (In Months)	11 months 12 days
Weighted-Average Interest Rate Change	5%
Weighted-Average Delay of Payment (In Months)	7 months
90 Days or Greater Past Due
Financing Receivable
Total Loans modified	$ 1,774
Total Past Due
Financing Receivable
Total Loans modified	1,774
Current
Financing Receivable
Total Loans modified	30,880
Term Extension
Financing Receivable
Total Loans modified	29,901
Combination - Term Extension and Payment Delay
Financing Receivable
Total Loans modified	1,774
Combination - Term Extension and Interest Rate Reduction
Financing Receivable
Total Loans modified	979
Commercial
Financing Receivable
Total Loans modified	$ 1,838
Total Loan Segment Modified to Total Loan Segment	0.20%
Weighted-Average Term Extension (In Months)	4 months 27 days
Weighted-Average Interest Rate Change	5%
Commercial \| Current
Financing Receivable
Total Loans modified	$ 1,838
Commercial \| Term Extension
Financing Receivable
Total Loans modified	859
Commercial \| Combination - Term Extension and Interest Rate Reduction
Financing Receivable
Total Loans modified	979
Commercial real estate - Investor
Financing Receivable
Total Loans modified	$ 14,438
Total Loan Segment Modified to Total Loan Segment	1.30%
Weighted-Average Term Extension (In Months)	11 months 15 days
Weighted-Average Delay of Payment (In Months)	7 months
Commercial real estate - Investor \| 90 Days or Greater Past Due
Financing Receivable
Total Loans modified	$ 1,774
Commercial real estate - Investor \| Total Past Due
Financing Receivable
Total Loans modified	1,774
Commercial real estate - Investor \| Current
Financing Receivable
Total Loans modified	12,664
Commercial real estate - Investor \| Term Extension
Financing Receivable
Total Loans modified	12,664
Commercial real estate - Investor \| Combination - Term Extension and Payment Delay
Financing Receivable
Total Loans modified	1,774
Commercial real estate - Owner occupied
Financing Receivable
Total Loans modified	$ 16,318
Total Loan Segment Modified to Total Loan Segment	2%
Weighted-Average Term Extension (In Months)	12 months
Commercial real estate - Owner occupied \| Current
Financing Receivable
Total Loans modified	$ 16,318
Commercial real estate - Owner occupied \| Term Extension
Financing Receivable
Total Loans modified	16,318
HELOC
Financing Receivable
Total Loans modified	$ 60
Total Loan Segment Modified to Total Loan Segment	0.10%
Weighted-Average Term Extension (In Months)	24 months
HELOC \| Current
Financing Receivable
Total Loans modified	$ 60
HELOC \| Term Extension
Financing Receivable
Total Loans modified	$ 60

Deposits - Classifications of D

Deposits - Classifications of Deposits (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Deposits
Noninterest bearing demand	$ 1,897,694	$ 2,051,702
Savings	1,050,453	1,145,592
NOW accounts	586,121	609,338
Money market accounts	731,459	862,170
Certificates of deposit of less than $100,000	240,848	244,017
Certificates of deposit of $100,000 through $250,000	148,070	157,438
Certificates of deposit of more than $250,000	62,937	40,466
Total deposits	$ 4,717,582	$ 5,110,723

Borrowings - Summary (Details)

Borrowings - Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Borrowings
Total borrowings	$ 601,644	$ 260,811
Securities sold under repurchase agreements
Borrowings
Total borrowings	31,532	32,156
Other short-term borrowings
Borrowings
Total borrowings	485,000	90,000
Junior subordinated debentures
Borrowings
Total borrowings	25,773	25,773
Subordinated debentures
Borrowings
Total borrowings	$ 59,339	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			6 Months Ended
	Feb. 24, 2023 USD ($)	Feb. 24, 2020 USD ($)	Dec. 31, 2016	Jun. 30, 2023 USD ($) item	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2023 USD ($) item	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Apr. 20, 2018 USD ($)
Borrowings
Securities available-for-sale, at fair value				$ 1,335,622			$ 1,335,622		$ 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				$ 21,800			$ 21,800		5,600
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock				36,730			36,730		20,530
Proceeds from term note		$ 30,000
Repayment of term note							9,000	$ 2,000
Senior notes									44,585
Basis points added to reference rate (as a percent)		175%
Total borrowings				601,644			601,644		260,811
Asset Pledged as Collateral with Right \| Securities sold under repurchase agreements
Borrowings
Investment securities pledged with financial institutions, dollars									32,200
Securities available-for-sale, at fair value				65,000			65,000		71,400
GCFC/ABC Bank
Borrowings
Debt assumed										$ 23,400
Balance of borrowings paid off					$ 5,900
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				31,532			31,532		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				$ 31,500			$ 31,500
Federal Home Loan Bank Advances
Borrowings
Borrowings at FHLBC as percentage of book value of certain mortgage loans				60%			60%
FHLBC advance amount				$ 485,000			$ 485,000		90,000
FHLBC stock				21,800			21,800
Principal balance of loans collateralized				1,480,000			1,480,000
Combined collateral value				1,040,000			1,040,000
Amount available for additional borrowings				551,300			551,300
Subordinated debentures
Borrowings
Total borrowings				59,339			59,339		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			$ 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				$ 59,300			$ 59,300		$ 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
	Apr. 30, 2007	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 15, 2017	Dec. 31, 2017	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 LIBOR
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)		4.37%	4.42%
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	6 Months Ended
Equity Compensation Plans (Details) - USD ($) $ in Millions	May 31, 2021	Jun. 30, 2023	Jun. 30, 2022	May 31, 2019
Equity Compensation Plans
Total compensation cost		$ 1.8	$ 1.5
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		967,600

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	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Changes in unvested awards
Nonvested at the beginning of the period (in shares)	649,210
Granted (in shares)	238,149	264,589
Vested (in shares)	(117,674)
Forfeited (in shares)	(5,079)
Nonvested at the end of the period (in shares)	764,606
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 12.84
Granted (in dollars per share)	17.05
Vested (in dollars per share)	12.26
Forfeited (in dollars per share)	13.55
Nonvested at the end of the period (in dollars per share)	$ 14.23
Additional information
Total unrecognized compensation cost of restricted awards	$ 6.1
Expected weighted-average period for recognition of unrecognized compensation	2 years 21 days

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Basic earnings per share:
Weighted-average common shares outstanding	44,665,127	44,499,395	44,642,250	44,480,326
Net income	$ 25,562	$ 12,247	$ 49,169	$ 24,267
Basic earnings per share	$ 0.57	$ 0.28	$ 1.10	$ 0.55
Diluted earnings per share:
Weighted-average common shares outstanding	44,665,127	44,499,395	44,642,250	44,480,326
Diluted average common shares outstanding	45,424,418	45,246,736	45,370,806	45,204,460
Net earnings available to common stockholders	$ 25,562	$ 12,247	$ 49,169	$ 24,267
Diluted earnings per share	$ 0.56	$ 0.27	$ 1.08	$ 0.54
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)	759,291	747,341	728,556	724,134

Regulatory & Capital Matters (D

Regulatory & Capital Matters (Details) $ in Millions		6 Months Ended
Regulatory & Capital Matters (Details) $ in Millions	Aug. 07, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)		0.0896	0.0814
Risk-based capital ratio (as a percent)		0.1316	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)		0.0970	0.0932
Risk-based capital ratio (as a percent)		0.1283	0.1275
Tier One leverage ratio, basis point increase (as a percent)		0.38%
Risk-based capital ratio, basis point increase (as a percent)		0.08%
Risk-based capital ratio, basis point decrease (as a percent)		0.08%
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	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Common equity tier 1 capital to risk weighted assets
Actual	$ 503,459	$ 457,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 342,489	$ 330,966
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1029%	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	$ 643,871	$ 592,039
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 513,727	$ 496,518
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1316	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	$ 528,459	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 415,917	$ 401,838
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1080	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	$ 528,459	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 235,919	$ 236,956
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.0896	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	$ 571,923	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	342,176	330,498
Minimum Required to Be Well Capitalized	$ 317,735	$ 306,891
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.117%	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	$ 627,335	$ 602,237
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	513,407	495,960
Minimum Required to Be Well Capitalized	$ 488,959	$ 472,343
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1283	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	$ 571,923	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	415,500	401,319
Minimum Required to Be Well Capitalized	$ 391,058	$ 377,712
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1170	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	$ 571,923	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	235,845	237,083
Minimum Required to Be Well Capitalized	$ 294,806	$ 296,354
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.0970	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	6 Months Ended
	Jun. 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	$ 39.5

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	6 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 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	Jun. 30, 2023	Dec. 31, 2022
Assets:
Securities available-for-sale	$ 1,335,622	$ 1,539,359
Mortgage servicing rights	11,041	11,189
U.S. Treasury
Assets:
Securities available-for-sale	214,613	212,129
U.S. government agencies
Assets:
Securities available-for-sale	55,981	56,048
States and political subdivisions
Assets:
Securities available-for-sale	229,534	226,128
Corporate bonds
Assets:
Securities available-for-sale	4,882	9,622
Collateralized mortgage obligations
Assets:
Securities available-for-sale	407,495	533,768
Asset-backed Securities
Assets:
Securities available-for-sale	134,319	201,928
Collateralized loan obligations.
Assets:
Securities available-for-sale	173,658	174,746
Fair Value, Inputs, Level 1 [Member]
Assets:
Securities available-for-sale	214,613	212,129
Fair Value, Inputs, Level 2 [Member]
Assets:
Securities available-for-sale	1,106,071	1,291,219
Loans held-for-sale	1,218	491
Other assets	6,452	6,391
Liabilities:
Other liabilities	13,740	12,264
Fair Value, Inputs, Level 3 [Member]
Assets:
Securities available-for-sale	14,938	36,011
Mortgage servicing rights	11,041	11,189
Fair Value, Measurements, Recurring [Member]
Assets:
Loans held-for-sale	1,218	491
Mortgage servicing rights	11,041	11,189
Total financial assets	1,354,518	1,557,631
Liabilities:
Total	13,740	12,265
Fair Value, Measurements, Recurring [Member] \| Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	6,560	6,516
Liabilities:
Other liabilities	13,740	12,265
Fair Value, Measurements, Recurring [Member] \| Forward Contracts [Member]
Assets:
Other assets	77	76
Fair Value, Measurements, Recurring [Member] \| U.S. Treasury
Assets:
Securities available-for-sale	214,613	212,129
Fair Value, Measurements, Recurring [Member] \| U.S. government agencies
Assets:
Securities available-for-sale	55,981	56,048
Fair Value, Measurements, Recurring [Member] \| Mortgage Backed Securities, Issued by US Government Agencies
Assets:
Securities available-for-sale	115,140	124,990
Fair Value, Measurements, Recurring [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	229,534	226,128
Fair Value, Measurements, Recurring [Member] \| Corporate bonds
Assets:
Securities available-for-sale	4,882	9,622
Fair Value, Measurements, Recurring [Member] \| Collateralized mortgage obligations
Assets:
Securities available-for-sale	407,495	533,768
Fair Value, Measurements, Recurring [Member] \| Asset-backed Securities
Assets:
Securities available-for-sale	134,319	201,928
Fair Value, Measurements, Recurring [Member] \| Collateralized loan obligations.
Assets:
Securities available-for-sale	173,658	174,746
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Assets:
Total financial assets	214,613	212,129
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member] \| U.S. Treasury
Assets:
Securities available-for-sale	214,613	212,129
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Assets:
Loans held-for-sale	1,218	491
Total financial assets	1,113,926	1,298,302
Liabilities:
Total	13,740	12,265
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	6,560	6,516
Liabilities:
Other liabilities	13,740	12,265
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Forward Contracts [Member]
Assets:
Other assets	77	76
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| U.S. government agencies
Assets:
Securities available-for-sale	55,981	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	115,140	124,990
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	214,596	211,899
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Corporate bonds
Assets:
Securities available-for-sale	4,882	9,622
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized mortgage obligations
Assets:
Securities available-for-sale	407,495	526,998
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Asset-backed Securities
Assets:
Securities available-for-sale	134,319	186,916
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member] \| Collateralized loan obligations.
Assets:
Securities available-for-sale	173,658	174,746
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets:
Mortgage servicing rights	11,041	11,189
Total financial assets	25,979	47,200
Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member] \| States and political subdivisions
Assets:
Securities available-for-sale	$ 14,938	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	6 Months Ended
	Jun. 30, 2023	Jun. 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	622	(1,562)
Purchases, issuances, sales, and settlements
Purchases	406
Settlements	(253)	(521)
Ending balance	14,938	13,088
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	(66)	(65)
Mortgage Servicing Rights [Member]
Changes in Level 3
Beginning balance	11,189	7,097
Purchases, issuances, sales, and settlements
Issuances	281	565
Settlements	(6,584)	(570)
Ending balance	11,041	10,722
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	$ 6,155	$ 3,630

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative and Qualitative Information (Details) $ in Thousands	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	$ 11,041	$ 11,189
Securities available-for-sale, at fair value	1,335,622	1,539,359
Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	11,041	11,189
Securities available-for-sale, at fair value	14,938	36,011
Asset-backed Securities
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	134,319	201,928
States and political subdivisions
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	229,534	226,128
Collateralized mortgage obligations
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	407,495	533,768
Fair Value, Measurements, Recurring [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	11,041	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	11,041	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	134,319	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	229,534	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	14,938	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	407,495	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	$ 11,041	$ 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	$ 14,938	$ 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	0.031	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	0.052	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	0.045	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	0.030	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	0.223	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	0.063	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 ($)	6 Months Ended	12 Months Ended
Fair Value Measurements - Nonrecurring (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Assets and liabilities measured at fair value
Valuation allowance	$ 24,700,000
Carrying value of other real estate owned	761,000	$ 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	57,122,000	49,261,000
Fair Value, Measurements, Nonrecurring [Member] \| Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	56,361,000	47,700,000
Valuation allowance	24,700,000	17,600,000
Increase (decrease) of specific allocations within the provision for loan losses	7,100,000
Fair Value, Measurements, Nonrecurring [Member] \| Impaired Loans [Member] \| Reported Value Measurement [Member]
Assets and liabilities measured at fair value
Total	81,100,000
Fair Value, Measurements, Nonrecurring [Member] \| Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	761,000	1,561,000
Carrying value of other real estate owned	761,000	1,600,000
Outstanding balance	1,000,000	2,500,000
OREO Valuation allowance	114,000	856,000
OREO participations	130,000	131,000
Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Assets and liabilities measured at fair value
Total	57,122,000	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	56,361,000	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	$ 761,000	$ 1,561,000

Fair Values of Financial Inst_3

Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financial assets:
Cash and due from banks	$ 59,466	$ 56,632
Interest earning deposits with financial institutions	53,144	58,545
Securities available-for-sale	1,335,622	1,539,359
FHLBC and FRBC Stock	36,730	20,530
Mortgage servicing rights	11,041	11,189
Financial liabilities:
Noninterest bearing deposits	1,897,694	2,051,702
Other short-term borrowings	485,000	90,000
Junior subordinated debentures	25,773	25,773
Senior notes		44,585
Reported Value Measurement
Financial assets:
Cash and due from banks	59,466	56,632
Interest earning deposits with financial institutions	53,144	58,545
Securities available-for-sale	1,335,622	1,539,359
FHLBC and FRBC Stock	36,730	20,530
Loans held for sale	1,218	491
Net loans	3,960,211	3,820,129
Mortgage servicing rights	11,041	11,189
Interest rate swap agreements	6,452	6,391
Interest rate lock commitments and forward contracts	77	76
Interest receivable on securities and loans	24,708	22,661
Financial liabilities:
Noninterest bearing deposits	1,897,694	2,051,702
Interest bearing deposits	2,819,888	3,059,021
Securities sold under repurchase agreements	31,532	32,156
Other short-term borrowings	485,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,339	59,297
Senior notes		44,585
Note payable and other borrowings		9,000
Interest rate swap agreements	13,740	12,264
Interest payable on deposits and borrowings	1,950	1,657
Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	59,466	56,632
Interest earning deposits with financial institutions	53,144	58,545
Securities available-for-sale	1,335,622	1,539,359
FHLBC and FRBC Stock	36,730	20,530
Loans held for sale	1,218	491
Net loans	3,833,624	3,681,387
Mortgage servicing rights	11,041	11,189
Interest rate swap agreements	6,452	6,391
Interest rate lock commitments and forward contracts	77	76
Interest receivable on securities and loans	24,708	22,661
Financial liabilities:
Noninterest bearing deposits	1,897,694	2,051,702
Interest bearing deposits	2,805,372	3,042,740
Securities sold under repurchase agreements	31,532	32,156
Other short-term borrowings	485,000	90,000
Junior subordinated debentures	19,588	21,907
Subordinated debentures	47,339	52,322
Senior notes		44,248
Note payable and other borrowings		8,984
Interest rate swap agreements	13,740	12,264
Interest payable on deposits and borrowings	1,950	1,657
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	59,466	56,632
Interest earning deposits with financial institutions	53,144	58,545
Securities available-for-sale	214,613	212,129
Financial liabilities:
Noninterest bearing deposits	1,897,694	2,051,702
Senior notes		44,248
Fair Value, Inputs, Level 2
Financial assets:
Securities available-for-sale	1,106,071	1,291,219
FHLBC and FRBC Stock	36,730	20,530
Loans held for sale	1,218	491
Interest rate swap agreements	6,452	6,391
Interest rate lock commitments and forward contracts	77	76
Interest receivable on securities and loans	24,708	22,661
Financial liabilities:
Interest bearing deposits	2,805,372	3,042,740
Securities sold under repurchase agreements	31,532	32,156
Other short-term borrowings	485,000	90,000
Junior subordinated debentures	19,588	21,907
Subordinated debentures	47,339	52,322
Note payable and other borrowings		8,984
Interest rate swap agreements	13,740	12,264
Interest payable on deposits and borrowings	1,950	1,657
Fair Value, Inputs, Level 3
Financial assets:
Securities available-for-sale	14,938	36,011
Net loans	3,833,624	3,681,387
Mortgage servicing rights	$ 11,041	$ 11,189

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Fair Value of Derivatives (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2023 USD ($) item	Dec. 31, 2022 USD ($) item	Mar. 31, 2023 USD ($)
Two financial institutions
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Cash collateral pledged with financial institutions, dollars	$ 10,400,000	$ 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	$ 5,700,000	$ 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	$ 2,623,000	$ 2,737,000
Derivative liabilities designated as hedging instruments, fair value	9,911,000	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	2,623,000
Derivative liabilities designated as hedging instruments, fair value	9,911,000	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	4,014,000
Derivative liabilities designated as hedging instruments, fair value	3,829,000
Not Designated as Hedging Instrument \| Interest Rate Products
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 106,400,000	$ 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	18	21
Notional amount	$ 106,379,000	$ 110,647,000
Derivative assets designated as hedging instruments, fair value	3,829,000	3,654,000
Derivative liabilities designated as hedging instruments, fair value	3,829,000	3,654,000
Not Designated as Hedging Instrument \| Commitments.
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 10,000,000	$ 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	40	4
Notional amount	$ 10,029,000	$ 43,699,000
Derivative assets designated as hedging instruments, fair value	$ 77,000	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	$ 43,994,000
Derivative assets designated as hedging instruments, fair value	108,000	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	6,800,000
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	$ 688,000

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Effect of Fair Value (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Amount of loss recognized in OCI on derivative	$ 5,300	$ 581,000
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 2,400	$ 16,000

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Commitments (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Company's contractual commitments due to letters of credit
Total letters of credit	$ 32,577,000	$ 32,577,000	$ 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	372,000	372,000
Decrease In allowance for credit loss on unfunded commitments	650,000
Commercial unfunded commitments assumptions for decrease in the allowance for credit losses		427,000
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	3,629,000	3,629,000	6,675,000
Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	28,948,000	28,948,000	29,421,000
Commitments to Extend Credit to Borrowers [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	32,510,000	32,510,000	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	3,629,000	3,629,000	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	28,881,000	28,881,000	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	18,486,000	18,486,000	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	2,116,000	2,116,000	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	16,370,000	16,370,000	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	14,024,000	14,024,000	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	1,513,000	1,513,000	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	12,511,000	12,511,000	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	905,347,000	905,347,000	999,325,000
Unused lines of Credit [Member] \| Fixed [Member]
Company's contractual commitments due to letters of credit
Loan commitments	139,654,000	139,654,000	139,070,000
Unused lines of Credit [Member] \| Variable [Member]
Company's contractual commitments due to letters of credit
Loan commitments	$ 765,693,000	$ 765,693,000	$ 860,255,000

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pay vs Performance Disclosure
Net Income (Loss)	$ 25,562	$ 12,247	$ 49,169	$ 24,267

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 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