Old Second Bancorp (OSBC) 10-Q 9 May 23 2023 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2023	May 05, 2023
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 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		44,665,127
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000357173
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 50,860	$ 56,632
Interest earning deposits with financial institutions	52,162	58,545
Cash and cash equivalents	103,022	115,177
Securities available-for-sale, at fair value	1,455,068	1,539,359
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock	30,205	20,530
Loans held-for-sale	946	491
Loans	4,003,354	3,869,609
Less: allowance for credit losses on loans	53,392	49,480
Net loans	3,949,962	3,820,129
Premises and equipment, net	72,547	72,355
Other real estate owned	1,255	1,561
Mortgage servicing rights, at fair value	10,784	11,189
Goodwill	86,478	86,478
Core deposit intangible	13,054	13,678
Bank-owned life insurance ("BOLI")	106,850	106,608
Deferred tax assets, net	37,845	44,750
Other assets	52,267	56,012
Total assets	5,920,283	5,888,317
Deposits:
Noninterest bearing demand	1,950,144	2,051,702
Interest bearing:
Savings, NOW, and money market	2,516,170	2,617,100
Time	430,906	441,921
Total deposits	4,897,220	5,110,723
Securities sold under repurchase agreements	27,897	32,156
Other short-term borrowings	315,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,318	59,297
Senior notes	44,611	44,585
Notes payable and other borrowings		9,000
Other liabilities	53,594	55,642
Total liabilities	5,423,413	5,427,176
Stockholders' Equity
Common stock	44,705	44,705
Additional paid-in capital	200,121	202,276
Retained earnings	331,890	310,512
Accumulated other comprehensive loss	(79,100)	(93,124)
Treasury stock	(746)	(3,228)
Total stockholders' equity	496,870	461,141
Total liabilities and stockholders' equity	$ 5,920,283	$ 5,888,317

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 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
	Mar. 31, 2023	Mar. 31, 2022
Interest and dividend income
Loans, including fees	$ 57,210	$ 36,366
Loans held-for-sale	12	57
Securities:
Taxable	10,735	5,169
Tax exempt	1,337	1,317
Dividends from FHLBC and FRBC stock	280	153
Interest bearing deposits with financial institutions	585	269
Total interest and dividend income	70,159	43,331
Interest expense
Savings, NOW, and money market deposits	1,149	397
Time deposits	664	277
Securities sold under repurchase agreements	9	11
Other short-term borrowings	2,345
Junior subordinated debentures	279	280
Subordinated debentures	546	546
Senior notes	994	485
Notes payable and other borrowings	87	103
Total interest expense	6,073	2,099
Net interest and dividend income	64,086	41,232
Provision for credit losses	3,501
Net interest and dividend income after provision for credit losses	60,585	41,232
Noninterest income
Mortgage servicing rights mark to market (loss) gain	(525)	2,978
Net gain on sales of mortgage loans	306	1,495
Securities losses, net	(1,675)
Change in cash surrender value of BOLI	242	124
Card related income	2,244	2,574
Other income	1,489	862
Total noninterest income	7,350	13,463
Noninterest expense
Salaries and employee benefits	22,248	19,967
Occupancy, furniture and equipment	3,475	3,699
Computer and data processing	1,774	6,268
FDIC insurance	584	410
Net teller & bill paying	502	1,907
General bank insurance	305	315
Amortization of core deposit intangible	624	665
Advertising expense	142	182
Card related expense	1,216	534
Legal fees	319	257
Consulting & management fees	790	616
Other real estate expense, net	306	(12)
Other expense	3,637	3,444
Total noninterest expense	35,922	38,252
Income before income taxes	32,013	16,443
Provision for income taxes	8,406	4,423
Net income	$ 23,607	$ 12,020
Basic earnings per share	$ 0.53	$ 0.27
Diluted earnings per share	0.52	0.27
Dividends declared per share	$ 0.05	$ 0.05
Wealth management
Noninterest income
Service charges on deposits	$ 2,270	$ 2,698
Service charges on deposits
Noninterest income
Service charges on deposits	2,424	2,074
Secondary mortgage fees
Noninterest income
Service charges on deposits	59	139
Mortgage servicing income
Noninterest income
Service charges on deposits	$ 516	$ 519

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Consolidated Statements of Comprehensive Income (Loss)
Net Income	$ 23,607	$ 12,020
Unrealized holding gains (losses) on available-for-sale securities arising during the period	16,210	(64,829)
Related tax (expense) benefit	(4,536)	18,153
Holding gains (losses), after tax, on available-for-sale securities	11,674	(46,676)
Less: Reclassification adjustment for the net losses realized during the period
Net realized losses	(1,675)
Related tax benefit	471
Net realized losses after tax	(1,204)
Other comprehensive income (loss) on available-for-sale securities	12,878	(46,676)
Changes in fair value of derivatives used for cash flow hedges	1,602	589
Related tax expense	(456)	(165)
Other comprehensive income on cash flow hedges	1,146	424
Total other comprehensive income (loss)	14,024	(46,252)
Total comprehensive income (loss)	$ 37,631	$ (34,232)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income	$ 23,607	$ 12,020
Adjustments to reconcile net income to net cash provided by operating activities:
Net premium / discount amortization on securities	799	1,809
Securities losses, net	1,675
Provision for credit losses	3,501
Originations of loans held-for-sale	(10,206)	(32,739)
Proceeds from sales of loans held-for-sale	9,957	30,791
Net gains on sales of mortgage loans	(306)	(1,495)
Mortgage servicing rights mark to market loss (gain)	525	(2,978)
Net accretion of discount on loans and unfunded commitments	(1,180)	(2,382)
Net change in cash surrender value of BOLI	(242)	(124)
Net losses (gains) on sale of other real estate owned	28	(49)
Provision for other real estate owned valuation losses	269
Depreciation of fixed assets and amortization of leasehold improvements	1,046	1,086
Net gains on disposal and transfer of fixed assets	(434)
Amortization of core deposit intangibles	624	665
Change in current income taxes receivable	7,043	2,955
Deferred tax expense	1,442	1,458
Change in accrued interest receivable and other assets	2,635	893
Accretion of purchase accounting adjustment on time deposits	(367)	(424)
Change in accrued interest payable and other liabilities	(6,344)	(11,739)
Stock based compensation	932	747
Net cash provided by operating activities	35,004	494
Cash flows from investing activities
Proceeds from maturities and calls, including pay down of securities available-for-sale	37,718	75,650
Proceeds from sales of securities available-for-sale	66,170
Purchases of securities available-for-sale	(4,186)	(266,250)
Purchases of FHLBC/FRBC stock	(9,675)	(8,717)
Net change in loans	(132,445)	21,900
Proceeds from sales of other real estate owned, net of participations and improvements	300	118
Proceeds from disposition of premises and equipment	756	1,250
Net purchases of premises and equipment	(1,560)	(487)
Net cash used in investing activities	(42,922)	(176,536)
Cash flows from financing activities
Net change in deposits	(213,136)	78,737
Net change in securities sold under repurchase agreements	(4,259)	(16,816)
Net change in other short-term borrowings	225,000
Repayment of term note	(9,000)	(1,000)
Net change in notes payable and other borrowings, excluding term note		(81)
Dividends paid on common stock	(2,237)	(2,192)
Purchase of treasury stock	(605)
Net cash (used in) provided by financing activities	(4,237)	58,648
Net change in cash and cash equivalents	(12,155)	(117,394)
Cash and cash equivalents at beginning of period	115,177	752,107
Cash and cash equivalents at end of period	$ 103,022	$ 634,713

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			12,020			12,020
Other comprehensive income loss, net of tax				(46,252)		(46,252)
Dividends declared on common stock			(2,224)			(2,224)
Stock based compensation		747				747
Balance at Mar. 31, 2022	44,705	203,190	261,807	(37,484)	(5,900)	466,318
Balance at Dec. 31, 2022	44,705	202,276	310,512	(93,124)	(3,228)	461,141
Increase (Decrease) in Stockholders' Equity
Net Income			23,607			23,607
Other comprehensive income loss, net of tax				14,024		14,024
Dividends declared on common stock			(2,229)			(2,229)
Vesting of restricted stock		(3,087)			3,087
Stock based compensation		932				932
Purchase of treasury stock from taxes withheld on stock awards					(605)	(605)
Balance at Mar. 31, 2023	$ 44,705	$ 200,121	$ 331,890	$ (79,100)	$ (746)	$ 496,870

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ 461,141	$ 502,027
Other comprehensive (loss) income, net of tax	14,024	(46,252)
Balance	$ 496,870	$ 466,318
Dividend declared and paid (per share)	$ 0.05	$ 0.05
Total Accumulated Other Comprehensive Income/(Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	$ (93,124)	$ 8,768
Other comprehensive (loss) income, net of tax	14,024	(46,252)
Balance	(79,100)	(37,484)
Accumulated Unrealized Gain (Loss) on Securities Available-for-Sale
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(88,892)	11,139
Other comprehensive (loss) income, net of tax	12,878	(46,676)
Balance	(76,014)	(35,537)
Accumulated Unrealized Gain (Loss) on Derivative Instruments
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance	(4,232)	(2,371)
Other comprehensive (loss) income, net of tax	1,146	424
Balance	$ (3,086)	$ (1,947)

Basis of Presentation and Chang

Basis of Presentation and Changes in Significant Accounting Policies	3 Months Ended
	Mar. 31, 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 March 31, 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 continue to meet regularly to plan for the transition of existing LIBOR exposures prior to the final LIBOR cessation date of 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 first quarter of 2023, the Company had no changes to significant accounting policies or estimates. ​ Subsequent Events ​ On April 18, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on May 8, 2023, to stockholders of record as of April 28, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on May 8, 2023. ​

Acquisition

Acquisition	3 Months Ended
	Mar. 31, 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	3 Months Ended
	Mar. 31, 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 $15.3 million at March 31, 2023, and $5.6 million at December 31, 2022. FRBC stock was recorded at $14.9 million at March 31, 2023 and December 31, 2022. ​ The following tables summarize the amortized cost and fair value of the securities portfolio at March 31, 2023, and December 31, 2022, and the corresponding amounts of gross unrealized gains and losses: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gross ​ Gross ​ ​ ​ ​ ​ Amortized ​ Unrealized ​ Unrealized ​ Fair March 31, 2023 Cost 1 Gains Losses ​ Value Securities available-for-sale ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury ​ $ 224,195 ​ $ - ​ $ (9,461) ​ $ 214,734 U.S. government agencies ​ ​ 60,952 ​ ​ - ​ ​ (4,249) ​ ​ 56,703 U.S. government agencies mortgage-backed ​ ​ 135,504 ​ ​ - ​ ​ (13,566) ​ ​ 121,938 States and political subdivisions ​ ​ 243,131 ​ ​ 1,329 ​ ​ (10,954) ​ ​ 233,506 Corporate bonds ​ ​ 10,000 ​ ​ - ​ ​ (238) ​ ​ 9,762 Collateralized mortgage obligations ​ ​ 510,992 ​ ​ - ​ ​ (56,886) ​ ​ 454,106 Asset-backed securities ​ ​ 196,966 ​ ​ 4 ​ ​ (7,217) ​ ​ 189,753 Collateralized loan obligations ​ ​ 178,903 ​ ​ - ​ ​ (4,337) ​ ​ 174,566 Total securities available-for-sale ​ $ 1,560,643 ​ $ 1,333 ​ $ (106,908) ​ $ 1,455,068 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 $ million and $ million at March 31, 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 March 31, 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 ​ $ 64,076 ​ 0.72 % ​ $ 62,639 ​ Due after one year through five years ​ ​ 245,837 ​ 1.14 ​ ​ ​ 233,060 ​ Due after five years through ten years ​ ​ 48,750 ​ 3.02 ​ ​ ​ 45,537 ​ Due after ten years ​ ​ 179,615 ​ 3.06 ​ ​ ​ 173,469 ​ ​ ​ ​ 538,278 ​ 1.90 ​ ​ ​ 514,705 ​ Mortgage-backed and collateralized mortgage obligations ​ ​ 646,496 ​ 2.41 ​ ​ ​ 576,044 ​ Asset-backed securities ​ ​ 196,966 ​ 5.12 ​ ​ ​ 189,753 ​ Collateralized loan obligations ​ ​ 178,903 ​ 6.45 ​ ​ ​ 174,566 ​ Total securities available-for-sale ​ $ 1,560,643 ​ 3.04 % ​ $ 1,455,068 ​ ​ At March 31, 2023, the Company’s investments included $148.9 million of asset-backed securities that are backed by student loans originated under the Federal Family Education Loan program (“FFEL”). Under the FFEL, private lenders made federally guaranteed student loans to parents and students. While the program was modified several times before elimination in 2010, FFEL securities are generally guaranteed by the U.S Department of Education (“DOE”) at not less than 97% of the outstanding principal amount of the loans. The guarantee will reduce to 85% if the DOE receives reimbursement requests in excess of 5% of insured loans; reimbursement will drop to 75% if reimbursement requests exceed 9% of insured loans. In addition to the DOE guarantee, total added credit enhancement in the form of overcollateralization and/or subordination amounted to $20.3 million, or 9.29%, of outstanding principal. ​ At March 31, 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 March 31, 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 ​ ​ ​ ​ ​ ​ ​ ​ March 31, 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 ​ $ 9,461 ​ $ 214,734 ​ 5 ​ $ 9,461 ​ $ 214,734 U.S. government agencies ​ - ​ ​ - ​ ​ - ​ 9 ​ ​ 4,249 ​ ​ 56,703 ​ 9 ​ ​ 4,249 ​ ​ 56,703 U.S. government agencies mortgage-backed ​ 3 ​ ​ 143 ​ ​ 2,235 ​ 127 ​ ​ 13,423 ​ ​ 119,703 ​ 130 ​ ​ 13,566 ​ ​ 121,938 States and political subdivisions ​ 14 ​ ​ 434 ​ ​ 47,760 ​ 24 ​ ​ 10,520 ​ ​ 82,401 ​ 38 ​ ​ 10,954 ​ ​ 130,161 Corporate bonds ​ - ​ ​ - ​ ​ - ​ 2 ​ ​ 238 ​ ​ 9,762 ​ 2 ​ ​ 238 ​ ​ 9,762 Collateralized mortgage obligations ​ 13 ​ ​ 794 ​ ​ 23,540 ​ 157 ​ ​ 56,092 ​ ​ 430,566 ​ 170 ​ ​ 56,886 ​ ​ 454,106 Asset-backed securities ​ 11 ​ ​ 745 ​ ​ 45,309 ​ 39 ​ ​ 6,472 ​ ​ 144,132 ​ 50 ​ ​ 7,217 ​ ​ 189,441 Collateralized loan obligations ​ 5 ​ ​ 222 ​ ​ 13,632 ​ 29 ​ ​ 4,115 ​ ​ 160,934 ​ 34 ​ ​ 4,337 ​ ​ 174,566 Total securities available-for-sale ​ 46 ​ $ 2,338 ​ $ 132,476 ​ 392 ​ $ 104,570 ​ $ 1,218,935 ​ 438 ​ $ 106,908 ​ $ 1,351,411 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 3.2 years. No credit losses were determined to be present as of March 31, 2023, as there was no credit quality deterioration noted. Therefore, no provision for credit losses on securities was recognized for the first quarter of 2023. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ ​ ​ ​ March 31, ​ ​ Securities available-for-sale 2023 2022 ​ Proceeds from sales of securities ​ $ 66,170 ​ $ - ​ ​ Gross realized losses on securities ​ (1,675) ​ - ​ ​ Net realized losses ​ $ (1,675) ​ $ - ​ ​ Income tax benefit on net realized losses ​ $ 471 ​ $ - ​ ​ Effective tax rate applied ​ ​ 28.1 % ​ N/M ​ ​ ​ ​ N/M - Not meaningful ​ As of March 31, 2023, securities valued at $995.3 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	3 Months Ended
	Mar. 31, 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: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Commercial 1 ​ $ 851,737 ​ $ 840,964 Leases ​ ​ 285,831 ​ ​ 277,385 Commercial real estate – investor ​ ​ 1,056,787 ​ ​ 987,635 Commercial real estate – owner occupied ​ ​ 870,115 ​ ​ 854,879 Construction ​ ​ 174,683 ​ ​ 180,535 Residential real estate – investor ​ ​ 56,720 ​ ​ 57,353 Residential real estate – owner occupied ​ ​ 217,855 ​ ​ 219,718 Multifamily ​ ​ 358,991 ​ ​ 323,691 HELOC ​ ​ 104,941 ​ ​ 109,202 Other 2 ​ ​ 25,694 ​ ​ 18,247 Total loans ​ ​ 4,003,354 ​ ​ 3,869,609 Allowance for credit losses on loans ​ ​ (53,392) ​ ​ (49,480) Net loans 3 ​ $ 3,949,962 ​ $ 3,820,129 ​ 1 Includes $1.3 million and $1.6 million of Paycheck Protection Program (“PPP”) loans at March 31, 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 $17.0 million and $15.9 million at March 31, 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 70.9% and 70.6% of the portfolio at March 31, 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 months ended March 31, 2023 and 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Provision for ​ ​ ​ ​ ​ ​ ​ ​ Beginning ​ (Release of) ​ ​ ​ ​ ​ Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended March 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ $ 11,968 ​ $ (581) ​ $ 27 ​ $ 151 ​ $ 11,511 Leases ​ ​ 2,865 ​ ​ 774 ​ ​ 882 ​ ​ 9 ​ ​ 2,766 Commercial real estate – investor ​ ​ 10,674 ​ ​ 4,569 ​ ​ - ​ ​ 17 ​ ​ 15,260 Commercial real estate – owner occupied ​ ​ 15,001 ​ ​ 573 ​ ​ - ​ ​ 2 ​ ​ 15,576 Construction ​ ​ 1,546 ​ ​ (501) ​ ​ - ​ ​ - ​ ​ 1,045 Residential real estate – investor ​ ​ 768 ​ ​ (41) ​ ​ - ​ ​ 19 ​ ​ 746 Residential real estate – owner occupied ​ ​ 2,046 ​ ​ (334) ​ ​ - ​ ​ 10 ​ ​ 1,722 Multifamily ​ ​ 2,453 ​ ​ 212 ​ ​ - ​ ​ - ​ ​ 2,665 HELOC ​ ​ 1,806 ​ ​ (47) ​ ​ - ​ ​ 29 ​ ​ 1,788 Other ​ ​ 353 ​ ​ 28 ​ ​ 113 ​ ​ 45 ​ ​ 313 ​ ​ $ 49,480 ​ $ 4,652 ​ $ 1,022 ​ $ 282 ​ $ 53,392 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Provision for ​ ​ ​ ​ ​ ​ ​ ​ Beginning ​ (Release of) ​ ​ ​ ​ ​ Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ $ 11,751 ​ $ 825 ​ $ 30 ​ $ 30 ​ $ 12,576 Leases ​ ​ 3,480 ​ ​ (907) ​ ​ - ​ ​ - ​ ​ 2,573 Commercial real estate – investor ​ ​ 10,795 ​ ​ 108 ​ ​ 236 ​ ​ 23 ​ ​ 10,690 Commercial real estate – owner occupied ​ ​ 4,913 ​ ​ 3,339 ​ ​ 121 ​ ​ 8 ​ ​ 8,139 Construction ​ ​ 3,373 ​ ​ (515) ​ ​ - ​ ​ - ​ ​ 2,858 Residential real estate – investor ​ ​ 760 ​ ​ (67) ​ ​ - ​ ​ 10 ​ ​ 703 Residential real estate – owner occupied ​ ​ 2,832 ​ ​ (965) ​ ​ - ​ ​ 83 ​ ​ 1,950 Multifamily ​ ​ 3,675 ​ ​ (698) ​ ​ - ​ ​ - ​ ​ 2,977 HELOC ​ ​ 2,510 ​ ​ (870) ​ ​ - ​ ​ 35 ​ ​ 1,675 Other ​ ​ 192 ​ ​ 70 ​ ​ 127 ​ ​ 32 ​ ​ 167 ​ ​ $ 44,281 ​ $ 320 ​ $ 514 ​ $ 221 ​ $ 44,308 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ At March 31, 2023, our allowance for credit losses (“ACL”) on loans totaled $53.4 million, and our ACL on unfunded commitments, included in other liabilities, totaled $3.8 million including related purchase accounting adjustments. In the first quarter of 2023, we recorded net provision expense of $3.5 million based on historical loss rate updates, loan growth, our assessment of nonperforming loan metrics and trends, and estimated future credit losses. The ACL on loans excludes $3.2 million, $4.3 million and $4.2 million of allowance for unfunded commitments as of March 31, 2023, December 31, 2022 and March 31, 2022, respectively, recorded within Other Liabilities. The total ACL on unfunded commitments listed as of March 31, 2023, December 31, 2022, and March 31, 2022 excludes the purchase accounting adjustment of $596,000, $819,000 and $1.5 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 March 31, 2023 and December 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accounts ​ ​ ​ ​ ​ ​ ​ ACL March 31, 2023 ​ Real Estate ​ Receivable ​ Equipment ​ Other ​ Total ​ Allocation Commercial ​ $ 871 ​ $ 729 ​ $ - ​ $ 364 ​ $ 1,964 ​ $ 480 Leases ​ ​ - ​ ​ - ​ ​ 683 ​ ​ - ​ ​ 683 ​ ​ 683 Commercial real estate – investor ​ ​ 30,368 ​ ​ - ​ ​ - ​ ​ - ​ ​ 30,368 ​ ​ 7,654 Commercial real estate – owner occupied ​ ​ 16,000 ​ ​ - ​ ​ - ​ ​ 2,293 ​ ​ 18,293 ​ ​ 5,510 Construction ​ ​ 116 ​ ​ - ​ ​ - ​ ​ - ​ ​ 116 ​ ​ - Residential real estate – investor ​ ​ 675 ​ ​ - ​ ​ - ​ ​ - ​ ​ 675 ​ ​ - Residential real estate – owner occupied ​ ​ 1,541 ​ ​ - ​ ​ - ​ ​ - ​ ​ 1,541 ​ ​ - Multifamily ​ ​ 1,308 ​ ​ - ​ ​ - ​ ​ - ​ ​ 1,308 ​ ​ - HELOC ​ ​ 231 ​ ​ - ​ ​ - ​ ​ - ​ ​ 231 ​ ​ 47 Total ​ $ 51,110 ​ $ 729 ​ $ 683 ​ $ 2,657 ​ $ 55,179 ​ $ 14,374 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 March 31, 2023 ​ Past Due Past Due Due Due Current Total Loans Accruing Commercial ​ $ 2,640 ​ $ - ​ $ 1,422 ​ $ 4,062 ​ $ 847,675 ​ $ 851,737 ​ $ 460 Leases ​ ​ 789 ​ ​ 51 ​ ​ - ​ ​ 840 ​ ​ 284,991 ​ ​ 285,831 ​ ​ - Commercial real estate – investor ​ ​ 5,395 ​ ​ 22,966 ​ ​ 2,018 ​ ​ 30,379 ​ ​ 1,026,408 ​ ​ 1,056,787 ​ ​ - Commercial real estate – owner occupied ​ ​ 2,914 ​ ​ 9,162 ​ ​ 1,833 ​ ​ 13,909 ​ ​ 856,206 ​ ​ 870,115 ​ ​ - Construction ​ ​ 873 ​ ​ - ​ ​ 116 ​ ​ 989 ​ ​ 173,694 ​ ​ 174,683 ​ ​ - Residential real estate – investor ​ ​ 322 ​ ​ - ​ ​ 1,233 ​ ​ 1,555 ​ ​ 55,165 ​ ​ 56,720 ​ ​ - Residential real estate – owner occupied ​ ​ 3,044 ​ ​ 177 ​ ​ 2,622 ​ ​ 5,843 ​ ​ 212,012 ​ ​ 217,855 ​ ​ 420 Multifamily ​ ​ 217 ​ ​ - ​ ​ 1,662 ​ ​ 1,879 ​ ​ 357,112 ​ ​ 358,991 ​ ​ - HELOC ​ ​ 303 ​ ​ 182 ​ ​ 409 ​ ​ 894 ​ ​ 104,047 ​ ​ 104,941 ​ ​ 86 Other ​ ​ 558 ​ ​ 1 ​ ​ - ​ ​ 559 ​ ​ 25,135 ​ ​ 25,694 ​ ​ - Total ​ $ 17,055 ​ $ 32,539 ​ $ 11,315 ​ $ 60,909 ​ $ 3,942,445 ​ $ 4,003,354 ​ $ 966 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 March 31, 2023, and December 31, 2022: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Nonaccrual loan detail March 31, 2023 With no ACL December 31, 2022 With no ACL Commercial ​ $ 2,351 ​ $ 1,892 ​ $ 7,189 ​ $ 6,598 Leases ​ ​ 856 ​ ​ 173 ​ ​ 1,876 ​ ​ - Commercial real estate – investor ​ ​ 30,397 ​ ​ 11,210 ​ ​ 4,346 ​ ​ 4,244 Commercial real estate – owner occupied ​ ​ 19,691 ​ ​ 4,560 ​ ​ 8,050 ​ ​ 3,813 Construction ​ ​ 241 ​ ​ 241 ​ ​ 251 ​ ​ - Residential real estate – investor ​ ​ 1,555 ​ ​ 1,379 ​ ​ 1,528 ​ ​ 675 Residential real estate – owner occupied ​ ​ 3,618 ​ ​ 3,618 ​ ​ 3,713 ​ ​ 1,572 Multifamily ​ ​ 2,495 ​ ​ 2,495 ​ ​ 2,538 ​ ​ 1,322 HELOC ​ ​ 2,355 ​ ​ 2,177 ​ ​ 2,109 ​ ​ 180 Other ​ ​ 2 ​ ​ 2 ​ ​ 2 ​ ​ - Total ​ $ 63,561 ​ $ 27,747 ​ $ 31,602 ​ $ 18,404 ​ The Company recognized $86,000 of interest on nonaccrual loans during the three months ended March 31, 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 March 31, 2023 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 46,701 ​ $ 216,848 ​ $ 51,096 ​ $ 18,747 ​ $ 9,511 ​ $ 8,144 ​ $ 452,217 ​ $ 378 ​ $ 803,642 Special Mention ​ ​ - ​ ​ 582 ​ ​ 265 ​ ​ 1,088 ​ ​ 2,335 ​ ​ - ​ ​ 21,163 ​ ​ - ​ ​ 25,433 Substandard ​ ​ - ​ ​ 4,770 ​ ​ 1,880 ​ ​ 2,897 ​ ​ 11,570 ​ ​ 2 ​ ​ 1,543 ​ ​ - ​ ​ 22,662 Total commercial ​ ​ 46,701 ​ ​ 222,200 ​ ​ 53,241 ​ ​ 22,732 ​ ​ 23,416 ​ ​ 8,146 ​ ​ 474,923 ​ ​ 378 ​ ​ 851,737 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 27 ​ ​ ​ ​ ​ ​ ​ ​ 27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Leases ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 34,473 ​ ​ 150,347 ​ $ 58,708 ​ ​ 23,236 ​ ​ 14,741 ​ ​ 3,420 ​ ​ - ​ ​ - ​ ​ 284,925 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ 684 ​ ​ - ​ ​ - ​ ​ 222 ​ ​ - ​ ​ - ​ ​ - ​ ​ 906 Total leases ​ ​ 34,473 ​ ​ 151,031 ​ ​ 58,708 ​ ​ 23,236 ​ ​ 14,963 ​ ​ 3,420 ​ ​ - ​ ​ - ​ ​ 285,831 Current Period Gross charge-offs ​ ​ - ​ ​ 870 ​ ​ - ​ ​ - ​ ​ 12 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ 882 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate – investor ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 117,682 ​ ​ 382,638 ​ ​ 230,965 ​ ​ 114,537 ​ ​ 63,123 ​ ​ 76,867 ​ ​ 7,822 ​ ​ - ​ ​ 993,634 Special Mention ​ ​ - ​ ​ 3,575 ​ ​ - ​ ​ 5,904 ​ ​ - ​ ​ 1,059 ​ ​ - ​ ​ - ​ ​ 10,538 Substandard ​ ​ - ​ ​ 14,106 ​ ​ 3,388 ​ ​ 5,124 ​ ​ 20,878 ​ ​ 9,119 ​ ​ - ​ ​ - ​ ​ 52,615 Total commercial real estate – investor ​ ​ 117,682 ​ ​ 400,319 ​ ​ 234,353 ​ ​ 125,565 ​ ​ 84,001 ​ ​ 87,045 ​ ​ 7,822 ​ ​ - ​ ​ 1,056,787 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate – owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 46,394 ​ ​ 160,497 ​ ​ 211,124 ​ ​ 102,743 ​ ​ 46,193 ​ ​ 122,535 ​ ​ 31,491 ​ ​ - ​ ​ 720,977 Special Mention ​ ​ - ​ ​ 21,199 ​ ​ 22,244 ​ ​ 49,072 ​ ​ 17,552 ​ ​ 1,526 ​ ​ - ​ ​ - ​ ​ 111,593 Substandard ​ ​ - ​ ​ 2,524 ​ ​ 16,460 ​ ​ 1,177 ​ ​ 16,822 ​ ​ 562 ​ ​ - ​ ​ - ​ ​ 37,545 Total commercial real estate – owner occupied ​ ​ 46,394 ​ ​ 184,220 ​ ​ 249,828 ​ ​ 152,992 ​ ​ 80,567 ​ ​ 124,623 ​ ​ 31,491 ​ ​ - ​ ​ 870,115 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,837 ​ ​ 65,640 ​ ​ 52,420 ​ ​ 31,388 ​ ​ 1,895 ​ ​ 1,298 ​ ​ 1,895 ​ ​ - ​ ​ 156,373 Special Mention ​ ​ 307 ​ ​ 7,577 ​ ​ - ​ ​ 10,185 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 18,069 Substandard ​ ​ - ​ ​ 125 ​ ​ - ​ ​ - ​ ​ 116 ​ ​ - ​ ​ - ​ ​ - ​ ​ 241 Total construction ​ ​ 2,144 ​ ​ 73,342 ​ ​ 52,420 ​ ​ 41,573 ​ ​ 2,011 ​ ​ 1,298 ​ ​ 1,895 ​ ​ - ​ ​ 174,683 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Residential real estate – investor ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,314 ​ ​ 14,371 ​ ​ 9,806 ​ ​ 6,790 ​ ​ 8,147 ​ ​ 12,739 ​ ​ 1,782 ​ ​ - ​ ​ 54,949 Special Mention ​ ​ - ​ ​ - ​ ​ 69 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 69 Substandard ​ ​ - ​ ​ 617 ​ ​ - ​ ​ - ​ ​ 499 ​ ​ 586 ​ ​ - ​ ​ - ​ ​ 1,702 Total residential real estate – investor ​ ​ 1,314 ​ ​ 14,988 ​ ​ 9,875 ​ ​ 6,790 ​ ​ 8,646 ​ ​ 13,325 ​ ​ 1,782 ​ ​ - ​ ​ 56,720 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate – owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 2,876 ​ ​ 42,607 ​ ​ 43,687 ​ ​ 27,668 ​ ​ 15,777 ​ ​ 80,086 ​ ​ 1,536 ​ ​ - ​ ​ 214,237 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ 46 ​ ​ 128 ​ ​ 203 ​ ​ 94 ​ ​ 708 ​ ​ 2,439 ​ ​ - ​ ​ - ​ ​ 3,618 Total residential real estate – owner occupied ​ ​ 2,922 ​ ​ 42,735 ​ ​ 43,890 ​ ​ 27,762 ​ ​ 16,485 ​ ​ 82,525 ​ ​ 1,536 ​ ​ - ​ ​ 217,855 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Multifamily ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 32,158 ​ ​ 83,074 ​ ​ 116,721 ​ ​ 59,094 ​ ​ 12,976 ​ ​ 44,737 ​ ​ 294 ​ ​ - ​ ​ 349,054 Special Mention ​ ​ - ​ ​ 375 ​ ​ 3,632 ​ ​ 341 ​ ​ 1,683 ​ ​ 558 ​ ​ - ​ ​ - ​ ​ 6,589 Substandard ​ ​ - ​ ​ 2,777 ​ ​ - ​ ​ - ​ ​ - ​ ​ 571 ​ ​ - ​ ​ - ​ ​ 3,348 Total multifamily ​ ​ 32,158 ​ ​ 86,226 ​ ​ 120,353 ​ ​ 59,435 ​ ​ 14,659 ​ ​ 45,866 ​ ​ 294 ​ ​ - ​ ​ 358,991 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ HELOC ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 438 ​ ​ 2,891 ​ ​ 490 ​ ​ 1,480 ​ ​ 1,667 ​ ​ 2,937 ​ ​ 92,403 ​ ​ - ​ ​ 102,306 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ 29 ​ ​ 1 ​ ​ - ​ ​ 1 ​ ​ 339 ​ ​ 2,265 ​ ​ - ​ ​ 2,635 Total HELOC ​ ​ 438 ​ ​ 2,920 ​ ​ 491 ​ ​ 1,480 ​ ​ 1,668 ​ ​ 3,276 ​ ​ 94,668 ​ ​ - ​ ​ 104,941 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,914 ​ ​ 3,434 ​ ​ 1,955 ​ ​ 346 ​ ​ 120 ​ ​ 144 ​ ​ 17,779 ​ ​ - ​ ​ 25,692 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ - ​ ​ - ​ ​ 1 ​ ​ - ​ ​ - ​ ​ 1 ​ ​ - ​ ​ 2 Total other ​ ​ 1,914 ​ ​ 3,434 ​ ​ 1,955 ​ ​ 347 ​ ​ 120 ​ ​ 144 ​ ​ 17,780 ​ ​ - ​ ​ 25,694 Current Period Gross charge-offs ​ ​ - ​ ​ 3 ​ ​ 16 ​ ​ - ​ ​ - ​ ​ 94 ​ ​ ​ ​ ​ ​ ​ ​ 113 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 285,787 ​ ​ 1,122,347 ​ ​ 776,972 ​ ​ 386,029 ​ ​ 174,150 ​ ​ 352,907 ​ ​ 607,219 ​ ​ 378 ​ ​ 3,705,789 Special Mention ​ ​ 307 ​ ​ 33,308 ​ ​ 26,210 ​ ​ 66,590 ​ ​ 21,570 ​ ​ 3,143 ​ ​ 21,163 ​ ​ - ​ ​ 172,291 Substandard ​ ​ 46 ​ ​ 25,760 ​ ​ 21,932 ​ ​ 9,293 ​ ​ 50,816 ​ ​ 13,618 ​ ​ 3,809 ​ ​ - ​ ​ 125,274 Total loans ​ $ 286,140 ​ $ 1,181,415 ​ $ 825,114 ​ $ 461,912 ​ $ 246,536 ​ $ 369,668 ​ $ 632,191 ​ $ 378 ​ $ 4,003,354 Total Current Period Gross charge-offs ​ $ - ​ $ 873 ​ $ 16 ​ $ - ​ $ 12 ​ $ 121 ​ ​ ​ ​ ​ ​ ​ $ 1,022 ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted To Term Loans Total 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 Company had $547,000 and $600,000 in residential real estate loans in the process of foreclosure as of March 31, 2023, and December 31, 2022, respectively. ​ As of January 1, 2023, the Company adopted ASU 2022-02, Topic 326 “Troubled Debt Restructuring (“TDRs”) and Vintage Disclosures”, see Note 1. No loans were modified that were in financial difficulty during the three-month period ending March 31, 2023. There was no TDR activity for the three months ended March 31, 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 was no TDR default activity for the period ended March 31, 2022, for loans that were restructured within the prior 12-month period.

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2023
Other Real Estate Owned
Other Real Estate Owned	​ Note 5 – Other Real Estate Owned ​ Details related to the activity in the other real estate owned (“OREO”) portfolio, net of valuation allowance, for the periods presented are itemized in the following tables: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ March 31, Other real estate owned 2023 2022 Balance at beginning of period ​ $ 1,561 ​ $ 2,356 ​ Property additions, net of acquisition adjustments ​ ​ 291 ​ ​ 87 ​ Less: ​ ​ ​ ​ ​ ​ ​ Proceeds from property disposals, net of participation purchase and gains/losses ​ ​ 328 ​ ​ 69 ​ Period valuation write-down ​ ​ 269 ​ ​ - ​ Balance at end of period ​ $ 1,255 ​ $ 2,374 ​ ​ Activity in the valuation allowance was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ March 31, ​ 2023 2022 Balance at beginning of period ​ $ 856 ​ $ 1,179 ​ Provision for unrealized losses ​ ​ 269 ​ ​ - ​ Reductions taken on sales ​ ​ (272) ​ ​ - ​ Balance at end of period ​ $ 853 ​ $ 1,179 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Expenses related to OREO, net of lease revenue includes: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ ​ March 31, ​ 2023 2022 Loss (Gain) on sales, net ​ $ 28 ​ $ (49) ​ Provision for unrealized losses ​ ​ 269 ​ ​ - ​ Operating expenses ​ ​ 9 ​ ​ 37 ​ Less: ​ ​ ​ ​ ​ ​ ​ Lease revenue ​ ​ - ​ ​ - ​ Net OREO expense ​ $ 306 ​ $ (12) ​ ​

Deposits

Deposits	3 Months Ended
	Mar. 31, 2023
Deposits
Deposits	Note 6 – Deposits ​ Major classifications of deposits were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Noninterest bearing demand ​ $ 1,950,144 ​ $ 2,051,702 ​ Savings ​ ​ 1,108,610 ​ ​ 1,145,592 ​ NOW accounts ​ ​ 608,260 ​ ​ 609,338 ​ Money market accounts ​ ​ 799,300 ​ ​ 862,170 ​ Certificates of deposit of less than $100,000 ​ ​ 238,257 ​ ​ 244,017 ​ Certificates of deposit of $100,000 through $250,000 ​ ​ 147,887 ​ ​ 157,438 ​ Certificates of deposit of more than $250,000 ​ ​ 44,762 ​ ​ 40,466 ​ Total deposits ​ $ 4,897,220 ​ $ 5,110,723 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2023
Borrowings
Borrowings	Note 7 – Borrowings ​ The following table is a summary of borrowings as of March 31, 2023, and December 31, 2022. Junior subordinated debentures are discussed in more detail in Note 8. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Securities sold under repurchase agreements ​ $ 27,897 ​ $ 32,156 ​ Other short-term borrowings ​ ​ 315,000 ​ ​ 90,000 ​ Junior subordinated debentures ​ ​ 25,773 ​ ​ 25,773 ​ Subordinated debentures ​ ​ 59,318 ​ ​ 59,297 ​ Senior notes ​ ​ 44,611 ​ ​ 44,585 ​ Notes payable and other borrowings ​ ​ - ​ ​ 9,000 ​ Total borrowings ​ $ 472,599 ​ $ 260,811 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 $27.9 million at March 31, 2023, and $32.2 million at December 31, 2022. The fair value of the pledged collateral was $65.9 million at March 31, 2023, and $71.4 million at December 31, 2022. At March 31, 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 March 31, 2023, the Bank had $315.0 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 March 31, 2023 was valued at $15.3 million, and any potential FHLBC advances were collateralized by loans with a principal balance of $1.50 billion, which carried a FHLBC-calculated combined collateral value of $1.06 billion. The Company had excess collateral of $743.6 million available to secure borrowings at March 31, 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 March 31, 2023 and December 31, 2022, we had $59.3 million of subordinated debentures outstanding, net of deferred issuance costs. ​ The Company also had $44.6 million of senior notes outstanding, net of deferred issuance costs, as of March 31, 2023 and December 31, 2022. The senior notes were issued in December 2016 with a ten-year maturity, and terms include 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 March 31, 2023 and December 31, 2022 was 9.01% and 8.62% , respectively. The notes are 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. As of March 31, 2023, and December 31, 2022, unamortized debt issuance costs related to the senior notes were $389,000 and $415,000 , respectively, and are included as a reduction of the balance of the senior notes on the Consolidated Balance Sheets. These deferred issuance costs will be amortized to interest expense over the ten-year term of the notes and are included in the Consolidated Statements of Income. ​ 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 as of 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	3 Months Ended
	Mar. 31, 2023
Junior Subordinated Debentures.
Junior Subordinated Debentures	Note 8 – 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 4.39% and 4.41% for the quarters ended March 31, 2023 and March 31, 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 March 31, 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	3 Months Ended
	Mar. 31, 2023
Equity Compensation Plans
Equity Compensation Plans	Note 9 – 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 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 March 31, 2023, 970,271 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 and 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 stock options and SARs 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 230,399 and 251,055 restricted stock units issued under the 2019 Plan during the three months ended March 31, 2023 and March 31, 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 $948,000 in the first three months of 2023 and $795,000 for the first three months of 2022. ​ A summary of changes in the Company’s unvested restricted awards for the three months ended March 31, 2023, is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ ​ ​ ​ Weighted ​ ​ Restricted ​ Average ​ ​ Stock Shares ​ Grant Date ​ and Units Fair Value Unvested at January 1 ​ 649,210 ​ $ 12.84 Granted ​ 230,399 ​ ​ 17.21 Vested ​ (117,674) ​ ​ 12.26 Unvested at March 31 ​ 761,935 ​ $ 14.25 ​ ​ ​ ​ ​ ​ ​ Total unrecognized compensation cost of restricted awards was $6.8 million as of March 31, 2023, which is expected to be recognized over a weighted-average period of 2.25 years.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2023
Earnings Per Share
Earnings Per Share	Note 10 – Earnings Per Share ​ The earnings per share, both basic and diluted, are as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ ​ 2023 2022 Basic earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average common shares outstanding ​ ​ 44,619,118 ​ ​ 44,461,045 ​ ​ Net income ​ $ 23,607 ​ $ 12,020 ​ ​ Basic earnings per share ​ $ 0.53 ​ $ 0.27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Diluted earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average common shares outstanding ​ ​ 44,619,118 ​ ​ 44,461,045 ​ ​ Dilutive effect of unvested restricted awards 1 ​ ​ 697,480 ​ ​ 700,670 ​ ​ Diluted average common shares outstanding ​ ​ 45,316,598 ​ ​ 45,161,715 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Income ​ $ 23,607 ​ $ 12,020 ​ ​ Diluted earnings per share ​ $ 0.52 ​ $ 0.27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1 Includes the common stock equivalents for restricted share rights that are dilutive. ​ ​

Regulatory & Capital Matters

Regulatory & Capital Matters	3 Months Ended
	Mar. 31, 2023
Regulatory & Capital Matters
Regulatory & Capital Matters	Note 11 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 March 31, 2023, the Bank exceeded those thresholds. ​ At March 31, 2023, the Bank’s Tier 1 capital leverage ratio was 9.83%, an increase of 51 basis points from December 31, 2022, and is above the 8.00% objective. The Bank’s total capital ratio was 13.10%, an increase of 35 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 March 31, 2023, and December 31, 2022. ​ In July 2013, the U.S. federal banking authorities issued final rules (the “Basel III Rules”) establishing more stringent regulatory capital requirements for U.S. banking institutions, which went into effect on January 1, 2015. 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 March 31, 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 ​ March 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity tier 1 capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 478,610 ​ 9.91 % ​ $ 338,070 ​ 7.00 % ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 11.98 ​ ​ ​ 337,721 ​ 7.00 ​ ​ $ 313,598 ​ 6.50 % Total capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 617,527 ​ 12.79 ​ ​ ​ 506,961 ​ 10.50 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 631,903 ​ 13.10 ​ ​ ​ 506,487 ​ 10.50 ​ ​ ​ 482,369 ​ 10.00 ​ Tier 1 capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 503,610 ​ 10.43 ​ ​ ​ 410,420 ​ 8.50 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 11.98 ​ ​ ​ 410,090 ​ 8.50 ​ ​ ​ 385,967 ​ 8.00 ​ Tier 1 capital to average assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 503,610 ​ 8.56 ​ ​ ​ 235,332 ​ 4.00 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 9.83 ​ ​ ​ 235,193 ​ 4.00 ​ ​ ​ 293,991 ​ 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 March 31, 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 March 31, 2023, the Bank had capacity to pay dividends of $51.2 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	3 Months Ended
	Mar. 31, 2023
Fair Value Measurements
Fair Value Measurements	Note 12 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. ​ At March 31, 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 March 31, 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 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 March 31, 2023, and December 31, 2022, respectively, measured by the Company at fair value on a recurring basis: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities available-for-sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury ​ $ 214,734 ​ $ - ​ $ - ​ $ 214,734 U.S. government agencies ​ ​ - ​ ​ 56,703 ​ ​ - ​ ​ 56,703 U.S. government agencies mortgage-backed ​ ​ - ​ ​ 121,938 ​ ​ - ​ ​ 121,938 States and political subdivisions ​ ​ - ​ ​ 218,527 ​ ​ 14,979 ​ ​ 233,506 Corporate bonds ​ ​ - ​ ​ 9,762 ​ ​ - ​ ​ 9,762 Collateralized mortgage obligations ​ ​ - ​ ​ 454,106 ​ ​ - ​ ​ 454,106 Asset-backed securities ​ ​ - ​ ​ 189,753 ​ ​ - ​ ​ 189,753 Collateralized loan obligations ​ ​ - ​ ​ 174,566 ​ ​ - ​ ​ 174,566 Loans held-for-sale ​ ​ - ​ ​ 946 ​ ​ - ​ ​ 946 Mortgage servicing rights ​ ​ - ​ ​ - ​ ​ 10,784 ​ ​ 10,784 Interest rate swap agreements, including risk participation agreement ​ ​ - ​ ​ 5,885 ​ ​ - ​ ​ 5,885 Mortgage banking derivatives ​ ​ - ​ ​ 28 ​ ​ - ​ ​ 28 Total ​ $ 214,734 ​ $ 1,232,214 ​ $ 25,763 ​ $ 1,472,711 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swap agreements, including risk participation agreements ​ $ - ​ $ 10,007 ​ $ - ​ $ 10,007 Total ​ $ - ​ $ 10,007 ​ $ - ​ $ 10,007 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 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 into Level 3 ​ ​ - ​ - ​ - ​ ​ - Transfers out of Level 3 ​ ​ (14,885) ​ (6,764) ​ - ​ ​ - Total gains or losses ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Included in earnings ​ ​ (11) ​ - ​ (33) ​ ​ (471) Included in other comprehensive income ​ ​ 226 ​ (6) ​ 423 ​ ​ - Purchases, issuances, sales, and settlements ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Purchases ​ ​ - ​ - ​ 406 ​ ​ - Issuances ​ ​ - ​ - ​ - ​ ​ 120 Settlements ​ ​ (342) ​ - ​ (46) ​ ​ (54) Ending balance March 31, 2023 ​ $ - $ - $ 14,979 ​ $ 10,784 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2022 ​ ​ ​ Securities available-for-sale ​ ​ ​ ​ ​ ​ States and ​ Mortgage ​ ​ ​ Political ​ Servicing ​ ​ Subdivisions Rights Beginning balance January 1, 2022 ​ $ 14,092 ​ $ 7,097 ​ Transfers into Level 3 ​ ​ - ​ ​ - ​ Transfers out of Level 3 ​ ​ - ​ ​ - ​ Total gains or losses ​ ​ ​ ​ ​ ​ ​ Included in earnings ​ ​ (33) ​ ​ 3,228 ​ Included in other comprehensive income ​ ​ (938) ​ ​ - ​ Purchases, issuances, sales, and settlements ​ ​ ​ ​ ​ ​ ​ Purchases ​ ​ 1,076 ​ ​ - ​ Issuances ​ ​ - ​ ​ 301 ​ Settlements ​ ​ (364) ​ ​ (250) ​ Ending balance March 31, 2022 ​ $ 13,833 ​ $ 10,376 ​ ​ ​ The following table and commentary present quantitative and qualitative information about Level 3 fair value measurements as of March 31, 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 ​ $ 14,979 ​ Discounted Cash Flow ​ Discount Rate ​ 2.8 - 4.8% ​ 4.4 % ​ ​ ​ ​ ​ ​ ​ Liquidity Premium ​ 0.3 - 0.5% ​ 0.5 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage servicing rights ​ $ 10,784 ​ Discounted Cash Flow ​ Discount Rate ​ 9.0 - 11.0% ​ 9.0 % ​ ​ ​ ​ ​ ​ ​ Prepayment Speed ​ 4.2 - 29.1% ​ 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 March 31, 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: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Level 1 Level 2 Level 3 Total Individually evaluated loans 1 ​ $ - ​ $ - ​ $ 48,285 ​ $ 48,285 Other real estate owned, net 2 ​ ​ - ​ ​ - ​ ​ 1,255 ​ ​ 1,255 Total ​ $ - ​ $ - ​ $ 49,540 ​ $ 49,540 ​ 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 $69.6 million and a valuation allowance of $21.4 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $3.8 million for the three months ended March 31, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $1.3 million at March 31, 2023, which is made up of the outstanding balance of $2.2 million, net of a purchase accounting adjustment of $131,000 and a valuation allowance of $853,000 . ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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	3 Months Ended
	Mar. 31, 2023
Fair Values of Financial Instruments
Fair Values of Financial Instruments	Note 13 – 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 March 31, 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: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 50,860 ​ $ 50,860 ​ $ 50,860 ​ $ - ​ $ - Interest earning deposits with financial institutions ​ ​ 52,162 ​ ​ 52,162 ​ ​ 52,162 ​ ​ - ​ ​ - Securities available-for-sale ​ ​ 1,455,068 ​ ​ 1,455,068 ​ ​ 214,734 ​ ​ 1,225,355 ​ ​ 14,979 FHLBC and FRBC stock ​ ​ 30,205 ​ ​ 30,205 ​ ​ - ​ ​ 30,205 ​ ​ - Loans held-for-sale ​ ​ 946 ​ ​ 946 ​ ​ - ​ ​ 946 ​ ​ - Net loans ​ ​ 4,003,354 ​ ​ 3,842,384 ​ ​ - ​ ​ - ​ ​ 3,842,384 Mortgage servicing rights ​ ​ 10,784 ​ ​ 10,784 ​ ​ - ​ ​ - ​ ​ 10,784 Interest rate swap agreements ​ ​ 5,735 ​ ​ 5,735 ​ ​ - ​ ​ 5,735 ​ ​ - Interest rate lock commitments and forward contracts ​ ​ 28 ​ ​ 28 ​ ​ - ​ ​ 28 ​ ​ - Interest receivable on securities and loans ​ ​ 24,214 ​ ​ 24,214 ​ ​ - ​ ​ 24,214 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noninterest bearing deposits ​ $ 1,950,144 ​ $ 1,950,144 ​ $ 1,950,144 ​ $ - ​ $ - Interest bearing deposits ​ ​ 2,947,076 ​ ​ 2,932,989 ​ ​ - ​ ​ 2,932,989 ​ ​ - Securities sold under repurchase agreements ​ ​ 27,897 ​ ​ 27,897 ​ ​ - ​ ​ 27,897 ​ ​ - Other short-term borrowings ​ ​ 315,000 ​ ​ 315,000 ​ ​ - ​ ​ 315,000 ​ ​ - Junior subordinated debentures ​ ​ 25,773 ​ ​ 19,330 ​ ​ - ​ ​ 19,330 ​ ​ - Subordinated debentures ​ ​ 59,318 ​ ​ 46,118 ​ ​ - ​ ​ 46,118 ​ ​ - Senior notes ​ ​ 44,611 ​ ​ 41,011 ​ ​ 41,011 ​ ​ - ​ ​ - Interest rate swap agreements ​ ​ 10,006 ​ ​ 10,006 ​ ​ - ​ ​ 10,006 ​ ​ - Interest payable on deposits and borrowings ​ ​ 2,029 ​ ​ 2,029 ​ ​ - ​ ​ 2,029 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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	3 Months Ended
	Mar. 31, 2023
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk	Note 14 – 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 March 31, 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 March 31, 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 $5.0 million will be reclassified as an increase to interest income and an additional $511,000 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 March 31, 2023 and December 31, 2022 were $108.2 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 March 31, 2023 and December 31, 2022, the Company had $8.1 million of cash collateral pledged with two correspondent financial institutions and $11.2 million of cash collateral pledged with two correspondent financial institution, respectively. The Company held $2.8 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 first quarter of 2023 and in 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 March 31, 2023 and December 31, 2022 were $10.9 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 March 31, 2023 and December 31, 2022. ​ Fair Value of Derivative Instruments ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 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 1,824 ​ Other Liabilities 6,095 Total derivatives designated as hedging instruments ​ ​ ​ ​ ​ 1,824 ​ ​ 6,095 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not designated as hedging instruments ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps with commercial loan customers 19 ​ 108,150 ​ Other Assets 3,911 ​ Other Liabilities 3,911 Interest rate lock commitments and forward contracts 41 ​ 10,930 ​ Other Assets 28 ​ Other Liabilities - Other contracts 4 ​ 44,097 ​ Other Assets 150 ​ Other Liabilities 1 Total derivatives not designated as hedging instruments ​ ​ ​ ​ ​ 4,089 ​ ​ 3,912 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ December 31, 2022 ​ No. of Trans. ​ Notional Amount $ ​ Balance Sheet Location Fair Value $ ​ Balance Sheet Location Fair Value $ Derivatives designated as hedging instruments ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swap agreements 4 ​ 275,774 ​ Other Assets 2,737 ​ Other Liabilities 8,610 Total derivatives designated as hedging instruments ​ ​ ​ ​ ​ 2,737 ​ ​ 8,610 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not designated as hedging instruments ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps with commercial loan customers 21 ​ 110,647 ​ Other Assets 3,654 ​ Other Liabilities 3,654 Interest rate lock commitments and forward contracts 28 ​ 5,298 ​ Other Assets 76 ​ Other Liabilities - Other contracts 4 ​ 43,699 ​ Other Assets 125 ​ Other Liabilities 1 Total derivatives not designated as hedging instruments ​ ​ ​ ​ ​ 3,855 ​ ​ 3,655 ​ Disclosure of the Effect of Fair Value and Cash Flow Hedge Accounting ​ The fair value and cash flow hedge accounting related to derivatives covered under ASC Subtopic 815-20 impacted Accumulated Other Comprehensive Income (“AOCI”) and the Income Statement. The loss recognized in AOCI on derivatives totaled $3.1 million as of March 31, 2023, and $1.9 million as of March 31, 2022. The amount of the loss reclassified from AOCI to interest income on the income statement was $1.0 million for the three months ended March 31, 2023 and $16,000 of gain for three months ended March 31, 2022. ​ ​ Credit-risk-related Contingent Features ​ For derivative transactions involving counterparties who are lending customers of the Company, the derivative credit exposure is managed through the normal credit review and monitoring process, which may include collateralization, financial covenants and/or financial guarantees of affiliated parties. Agreements with such customers require that losses associated with derivative transactions receive payment priority from any funds recovered should a customer default and ultimate disposition of collateral or guarantees occur. ​ Credit exposure to broker/dealer counterparties is managed through agreements with each derivative counterparty that require collateralization of fair value gains owed by such counterparties. Some small degree of credit exposure exists due to timing differences between when a gain may occur and the subsequent point in time that collateral is delivered to secure that gain. This is monitored by the Company and procedures are in place to minimize this exposure. Such agreements also require the Company to collateralize counterparties in circumstances wherein the fair value of the derivatives result in loss to the Company. ​ Other provisions of such agreements include the definition of certain events that may lead to the declaration of default and/or the early termination of the derivative transaction(s): ● If the Company either defaults or is capable of being declared in default on any of its indebtedness (exclusive of deposit obligations), then the Company could also be declared in default on its derivative obligations. ● If a merger occurs that materially changes the Company's creditworthiness in an adverse manner. ● If certain specified adverse regulatory actions occur, such as the issuance of a Cease and Desist Order, or citations for actions considered Unsafe and Unsound or that may lead to the termination of deposit insurance coverage by the FDIC. ​ The Bank also issues letters of credit, which are conditional commitments that guarantee the performance of a customer to a third party. The credit risk involved and collateral obtained in issuing letters of credit are essentially the same as that involved in extending loan commitments to our customers. In addition to customer related commitments, the Company is responsible for letters of credit commitments that relate to properties held in OREO. The following table represents the Company’s contractual commitments due to letters of credit as of March 31, 2023, and December 31, 2022. ​ The following table is a summary of letter of credit commitments: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ December 31, 2022 ​ ​ Fixed Variable Total Fixed Variable Total Letters of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Borrower: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial standby ​ $ 3,456 ​ $ 15,390 ​ $ 18,846 ​ $ 3,514 ​ $ 15,365 ​ $ 18,879 ​ Performance standby ​ ​ 1,913 ​ ​ 11,799 ​ ​ 13,712 ​ ​ 3,161 ​ ​ 13,989 ​ ​ 17,150 ​ ​ ​ ​ 5,369 ​ ​ 27,189 ​ ​ 32,558 ​ ​ 6,675 ​ ​ 29,354 ​ ​ 36,029 ​ Non-borrower: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Performance standby ​ ​ - ​ ​ 67 ​ ​ 67 ​ ​ - ​ ​ 67 ​ ​ 67 ​ Total letters of credit ​ $ 5,369 ​ $ 27,256 ​ $ 32,625 ​ $ 6,675 ​ $ 29,421 ​ $ 36,096 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unused loan commitments: ​ $ 138,829 ​ $ 800,693 ​ $ 939,522 ​ $ 139,070 ​ $ 860,255 ​ $ 999,325 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ As of March 31, 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 first quarter of 2023, and based on that analysis under the CECL methodology, the Company determined credit losses related to unfunded commitments totaled $3.2 million, excluding a $596,000 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 $1.4 million for the first quarter of 2023, compared to the prior quarter end, is primarily related to a $1.2 million decrease in construction unfunded commitment levels as well as the loss rate associated with those commitments, a commercial substandard portfolio reduction primarily due to two upgraded credits, and a $224,000 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)	3 Months Ended
	Mar. 31, 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 continue to meet regularly to plan for the transition of existing LIBOR exposures prior to the final LIBOR cessation date of 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 April 18, 2023, our Board of Directors declared a cash dividend of $0.05 per share payable on May 8, 2023, to stockholders of record as of April 28, 2023; dividends of $2.2 million are scheduled to be paid to stockholders on May 8, 2023.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2023 Cost 1 Gains Losses ​ Value Securities available-for-sale ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury ​ $ 224,195 ​ $ - ​ $ (9,461) ​ $ 214,734 U.S. government agencies ​ ​ 60,952 ​ ​ - ​ ​ (4,249) ​ ​ 56,703 U.S. government agencies mortgage-backed ​ ​ 135,504 ​ ​ - ​ ​ (13,566) ​ ​ 121,938 States and political subdivisions ​ ​ 243,131 ​ ​ 1,329 ​ ​ (10,954) ​ ​ 233,506 Corporate bonds ​ ​ 10,000 ​ ​ - ​ ​ (238) ​ ​ 9,762 Collateralized mortgage obligations ​ ​ 510,992 ​ ​ - ​ ​ (56,886) ​ ​ 454,106 Asset-backed securities ​ ​ 196,966 ​ ​ 4 ​ ​ (7,217) ​ ​ 189,753 Collateralized loan obligations ​ ​ 178,903 ​ ​ - ​ ​ (4,337) ​ ​ 174,566 Total securities available-for-sale ​ $ 1,560,643 ​ $ 1,333 ​ $ (106,908) ​ $ 1,455,068 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 $ million and $ million at March 31, 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 ​ $ 64,076 ​ 0.72 % ​ $ 62,639 ​ Due after one year through five years ​ ​ 245,837 ​ 1.14 ​ ​ ​ 233,060 ​ Due after five years through ten years ​ ​ 48,750 ​ 3.02 ​ ​ ​ 45,537 ​ Due after ten years ​ ​ 179,615 ​ 3.06 ​ ​ ​ 173,469 ​ ​ ​ ​ 538,278 ​ 1.90 ​ ​ ​ 514,705 ​ Mortgage-backed and collateralized mortgage obligations ​ ​ 646,496 ​ 2.41 ​ ​ ​ 576,044 ​ Asset-backed securities ​ ​ 196,966 ​ 5.12 ​ ​ ​ 189,753 ​ Collateralized loan obligations ​ ​ 178,903 ​ 6.45 ​ ​ ​ 174,566 ​ Total securities available-for-sale ​ $ 1,560,643 ​ 3.04 % ​ $ 1,455,068 ​ ​
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 ​ ​ ​ ​ ​ ​ ​ ​ March 31, 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 ​ $ 9,461 ​ $ 214,734 ​ 5 ​ $ 9,461 ​ $ 214,734 U.S. government agencies ​ - ​ ​ - ​ ​ - ​ 9 ​ ​ 4,249 ​ ​ 56,703 ​ 9 ​ ​ 4,249 ​ ​ 56,703 U.S. government agencies mortgage-backed ​ 3 ​ ​ 143 ​ ​ 2,235 ​ 127 ​ ​ 13,423 ​ ​ 119,703 ​ 130 ​ ​ 13,566 ​ ​ 121,938 States and political subdivisions ​ 14 ​ ​ 434 ​ ​ 47,760 ​ 24 ​ ​ 10,520 ​ ​ 82,401 ​ 38 ​ ​ 10,954 ​ ​ 130,161 Corporate bonds ​ - ​ ​ - ​ ​ - ​ 2 ​ ​ 238 ​ ​ 9,762 ​ 2 ​ ​ 238 ​ ​ 9,762 Collateralized mortgage obligations ​ 13 ​ ​ 794 ​ ​ 23,540 ​ 157 ​ ​ 56,092 ​ ​ 430,566 ​ 170 ​ ​ 56,886 ​ ​ 454,106 Asset-backed securities ​ 11 ​ ​ 745 ​ ​ 45,309 ​ 39 ​ ​ 6,472 ​ ​ 144,132 ​ 50 ​ ​ 7,217 ​ ​ 189,441 Collateralized loan obligations ​ 5 ​ ​ 222 ​ ​ 13,632 ​ 29 ​ ​ 4,115 ​ ​ 160,934 ​ 34 ​ ​ 4,337 ​ ​ 174,566 Total securities available-for-sale ​ 46 ​ $ 2,338 ​ $ 132,476 ​ 392 ​ $ 104,570 ​ $ 1,218,935 ​ 438 ​ $ 106,908 ​ $ 1,351,411 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 ​ ​ ​ ​ ​ March 31, ​ ​ Securities available-for-sale 2023 2022 ​ Proceeds from sales of securities ​ $ 66,170 ​ $ - ​ ​ Gross realized losses on securities ​ (1,675) ​ - ​ ​ Net realized losses ​ $ (1,675) ​ $ - ​ ​ Income tax benefit on net realized losses ​ $ 471 ​ $ - ​ ​ Effective tax rate applied ​ ​ 28.1 % ​ N/M ​ ​ ​

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses on Loans (Tables)	3 Months Ended
	Mar. 31, 2023
Loans and Allowance for Credit Losses on Loans
Schedule of major classifications of loans	​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Commercial 1 ​ $ 851,737 ​ $ 840,964 Leases ​ ​ 285,831 ​ ​ 277,385 Commercial real estate – investor ​ ​ 1,056,787 ​ ​ 987,635 Commercial real estate – owner occupied ​ ​ 870,115 ​ ​ 854,879 Construction ​ ​ 174,683 ​ ​ 180,535 Residential real estate – investor ​ ​ 56,720 ​ ​ 57,353 Residential real estate – owner occupied ​ ​ 217,855 ​ ​ 219,718 Multifamily ​ ​ 358,991 ​ ​ 323,691 HELOC ​ ​ 104,941 ​ ​ 109,202 Other 2 ​ ​ 25,694 ​ ​ 18,247 Total loans ​ ​ 4,003,354 ​ ​ 3,869,609 Allowance for credit losses on loans ​ ​ (53,392) ​ ​ (49,480) Net loans 3 ​ $ 3,949,962 ​ $ 3,820,129 ​ 1 Includes $1.3 million and $1.6 million of Paycheck Protection Program (“PPP”) loans at March 31, 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 $17.0 million and $15.9 million at March 31, 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 March 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ $ 11,968 ​ $ (581) ​ $ 27 ​ $ 151 ​ $ 11,511 Leases ​ ​ 2,865 ​ ​ 774 ​ ​ 882 ​ ​ 9 ​ ​ 2,766 Commercial real estate – investor ​ ​ 10,674 ​ ​ 4,569 ​ ​ - ​ ​ 17 ​ ​ 15,260 Commercial real estate – owner occupied ​ ​ 15,001 ​ ​ 573 ​ ​ - ​ ​ 2 ​ ​ 15,576 Construction ​ ​ 1,546 ​ ​ (501) ​ ​ - ​ ​ - ​ ​ 1,045 Residential real estate – investor ​ ​ 768 ​ ​ (41) ​ ​ - ​ ​ 19 ​ ​ 746 Residential real estate – owner occupied ​ ​ 2,046 ​ ​ (334) ​ ​ - ​ ​ 10 ​ ​ 1,722 Multifamily ​ ​ 2,453 ​ ​ 212 ​ ​ - ​ ​ - ​ ​ 2,665 HELOC ​ ​ 1,806 ​ ​ (47) ​ ​ - ​ ​ 29 ​ ​ 1,788 Other ​ ​ 353 ​ ​ 28 ​ ​ 113 ​ ​ 45 ​ ​ 313 ​ ​ $ 49,480 ​ $ 4,652 ​ $ 1,022 ​ $ 282 ​ $ 53,392 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Provision for ​ ​ ​ ​ ​ ​ ​ ​ Beginning ​ (Release of) ​ ​ ​ ​ ​ Ending Allowance for credit losses Balance Credit Losses Charge-offs Recoveries Balance Three months ended March 31, 2022 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial ​ $ 11,751 ​ $ 825 ​ $ 30 ​ $ 30 ​ $ 12,576 Leases ​ ​ 3,480 ​ ​ (907) ​ ​ - ​ ​ - ​ ​ 2,573 Commercial real estate – investor ​ ​ 10,795 ​ ​ 108 ​ ​ 236 ​ ​ 23 ​ ​ 10,690 Commercial real estate – owner occupied ​ ​ 4,913 ​ ​ 3,339 ​ ​ 121 ​ ​ 8 ​ ​ 8,139 Construction ​ ​ 3,373 ​ ​ (515) ​ ​ - ​ ​ - ​ ​ 2,858 Residential real estate – investor ​ ​ 760 ​ ​ (67) ​ ​ - ​ ​ 10 ​ ​ 703 Residential real estate – owner occupied ​ ​ 2,832 ​ ​ (965) ​ ​ - ​ ​ 83 ​ ​ 1,950 Multifamily ​ ​ 3,675 ​ ​ (698) ​ ​ - ​ ​ - ​ ​ 2,977 HELOC ​ ​ 2,510 ​ ​ (870) ​ ​ - ​ ​ 35 ​ ​ 1,675 Other ​ ​ 192 ​ ​ 70 ​ ​ 127 ​ ​ 32 ​ ​ 167 ​ ​ $ 44,281 ​ $ 320 ​ $ 514 ​ $ 221 ​ $ 44,308 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of collateral dependent loans and related loan allowances.	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Accounts ​ ​ ​ ​ ​ ​ ​ ACL March 31, 2023 ​ Real Estate ​ Receivable ​ Equipment ​ Other ​ Total ​ Allocation Commercial ​ $ 871 ​ $ 729 ​ $ - ​ $ 364 ​ $ 1,964 ​ $ 480 Leases ​ ​ - ​ ​ - ​ ​ 683 ​ ​ - ​ ​ 683 ​ ​ 683 Commercial real estate – investor ​ ​ 30,368 ​ ​ - ​ ​ - ​ ​ - ​ ​ 30,368 ​ ​ 7,654 Commercial real estate – owner occupied ​ ​ 16,000 ​ ​ - ​ ​ - ​ ​ 2,293 ​ ​ 18,293 ​ ​ 5,510 Construction ​ ​ 116 ​ ​ - ​ ​ - ​ ​ - ​ ​ 116 ​ ​ - Residential real estate – investor ​ ​ 675 ​ ​ - ​ ​ - ​ ​ - ​ ​ 675 ​ ​ - Residential real estate – owner occupied ​ ​ 1,541 ​ ​ - ​ ​ - ​ ​ - ​ ​ 1,541 ​ ​ - Multifamily ​ ​ 1,308 ​ ​ - ​ ​ - ​ ​ - ​ ​ 1,308 ​ ​ - HELOC ​ ​ 231 ​ ​ - ​ ​ - ​ ​ - ​ ​ 231 ​ ​ 47 Total ​ $ 51,110 ​ $ 729 ​ $ 683 ​ $ 2,657 ​ $ 55,179 ​ $ 14,374 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 March 31, 2023 ​ Past Due Past Due Due Due Current Total Loans Accruing Commercial ​ $ 2,640 ​ $ - ​ $ 1,422 ​ $ 4,062 ​ $ 847,675 ​ $ 851,737 ​ $ 460 Leases ​ ​ 789 ​ ​ 51 ​ ​ - ​ ​ 840 ​ ​ 284,991 ​ ​ 285,831 ​ ​ - Commercial real estate – investor ​ ​ 5,395 ​ ​ 22,966 ​ ​ 2,018 ​ ​ 30,379 ​ ​ 1,026,408 ​ ​ 1,056,787 ​ ​ - Commercial real estate – owner occupied ​ ​ 2,914 ​ ​ 9,162 ​ ​ 1,833 ​ ​ 13,909 ​ ​ 856,206 ​ ​ 870,115 ​ ​ - Construction ​ ​ 873 ​ ​ - ​ ​ 116 ​ ​ 989 ​ ​ 173,694 ​ ​ 174,683 ​ ​ - Residential real estate – investor ​ ​ 322 ​ ​ - ​ ​ 1,233 ​ ​ 1,555 ​ ​ 55,165 ​ ​ 56,720 ​ ​ - Residential real estate – owner occupied ​ ​ 3,044 ​ ​ 177 ​ ​ 2,622 ​ ​ 5,843 ​ ​ 212,012 ​ ​ 217,855 ​ ​ 420 Multifamily ​ ​ 217 ​ ​ - ​ ​ 1,662 ​ ​ 1,879 ​ ​ 357,112 ​ ​ 358,991 ​ ​ - HELOC ​ ​ 303 ​ ​ 182 ​ ​ 409 ​ ​ 894 ​ ​ 104,047 ​ ​ 104,941 ​ ​ 86 Other ​ ​ 558 ​ ​ 1 ​ ​ - ​ ​ 559 ​ ​ 25,135 ​ ​ 25,694 ​ ​ - Total ​ $ 17,055 ​ $ 32,539 ​ $ 11,315 ​ $ 60,909 ​ $ 3,942,445 ​ $ 4,003,354 ​ $ 966 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 March 31, 2023 With no ACL December 31, 2022 With no ACL Commercial ​ $ 2,351 ​ $ 1,892 ​ $ 7,189 ​ $ 6,598 Leases ​ ​ 856 ​ ​ 173 ​ ​ 1,876 ​ ​ - Commercial real estate – investor ​ ​ 30,397 ​ ​ 11,210 ​ ​ 4,346 ​ ​ 4,244 Commercial real estate – owner occupied ​ ​ 19,691 ​ ​ 4,560 ​ ​ 8,050 ​ ​ 3,813 Construction ​ ​ 241 ​ ​ 241 ​ ​ 251 ​ ​ - Residential real estate – investor ​ ​ 1,555 ​ ​ 1,379 ​ ​ 1,528 ​ ​ 675 Residential real estate – owner occupied ​ ​ 3,618 ​ ​ 3,618 ​ ​ 3,713 ​ ​ 1,572 Multifamily ​ ​ 2,495 ​ ​ 2,495 ​ ​ 2,538 ​ ​ 1,322 HELOC ​ ​ 2,355 ​ ​ 2,177 ​ ​ 2,109 ​ ​ 180 Other ​ ​ 2 ​ ​ 2 ​ ​ 2 ​ ​ - Total ​ $ 63,561 ​ $ 27,747 ​ $ 31,602 ​ $ 18,404 ​
Schedule of credit quality indicators by class of loans	​ Credit quality indicators by loan segment and loan origination date at March 31, 2023 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Commercial ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ $ 46,701 ​ $ 216,848 ​ $ 51,096 ​ $ 18,747 ​ $ 9,511 ​ $ 8,144 ​ $ 452,217 ​ $ 378 ​ $ 803,642 Special Mention ​ ​ - ​ ​ 582 ​ ​ 265 ​ ​ 1,088 ​ ​ 2,335 ​ ​ - ​ ​ 21,163 ​ ​ - ​ ​ 25,433 Substandard ​ ​ - ​ ​ 4,770 ​ ​ 1,880 ​ ​ 2,897 ​ ​ 11,570 ​ ​ 2 ​ ​ 1,543 ​ ​ - ​ ​ 22,662 Total commercial ​ ​ 46,701 ​ ​ 222,200 ​ ​ 53,241 ​ ​ 22,732 ​ ​ 23,416 ​ ​ 8,146 ​ ​ 474,923 ​ ​ 378 ​ ​ 851,737 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 27 ​ ​ ​ ​ ​ ​ ​ ​ 27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Leases ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 34,473 ​ ​ 150,347 ​ $ 58,708 ​ ​ 23,236 ​ ​ 14,741 ​ ​ 3,420 ​ ​ - ​ ​ - ​ ​ 284,925 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ 684 ​ ​ - ​ ​ - ​ ​ 222 ​ ​ - ​ ​ - ​ ​ - ​ ​ 906 Total leases ​ ​ 34,473 ​ ​ 151,031 ​ ​ 58,708 ​ ​ 23,236 ​ ​ 14,963 ​ ​ 3,420 ​ ​ - ​ ​ - ​ ​ 285,831 Current Period Gross charge-offs ​ ​ - ​ ​ 870 ​ ​ - ​ ​ - ​ ​ 12 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ 882 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate – investor ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 117,682 ​ ​ 382,638 ​ ​ 230,965 ​ ​ 114,537 ​ ​ 63,123 ​ ​ 76,867 ​ ​ 7,822 ​ ​ - ​ ​ 993,634 Special Mention ​ ​ - ​ ​ 3,575 ​ ​ - ​ ​ 5,904 ​ ​ - ​ ​ 1,059 ​ ​ - ​ ​ - ​ ​ 10,538 Substandard ​ ​ - ​ ​ 14,106 ​ ​ 3,388 ​ ​ 5,124 ​ ​ 20,878 ​ ​ 9,119 ​ ​ - ​ ​ - ​ ​ 52,615 Total commercial real estate – investor ​ ​ 117,682 ​ ​ 400,319 ​ ​ 234,353 ​ ​ 125,565 ​ ​ 84,001 ​ ​ 87,045 ​ ​ 7,822 ​ ​ - ​ ​ 1,056,787 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Commercial real estate – owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 46,394 ​ ​ 160,497 ​ ​ 211,124 ​ ​ 102,743 ​ ​ 46,193 ​ ​ 122,535 ​ ​ 31,491 ​ ​ - ​ ​ 720,977 Special Mention ​ ​ - ​ ​ 21,199 ​ ​ 22,244 ​ ​ 49,072 ​ ​ 17,552 ​ ​ 1,526 ​ ​ - ​ ​ - ​ ​ 111,593 Substandard ​ ​ - ​ ​ 2,524 ​ ​ 16,460 ​ ​ 1,177 ​ ​ 16,822 ​ ​ 562 ​ ​ - ​ ​ - ​ ​ 37,545 Total commercial real estate – owner occupied ​ ​ 46,394 ​ ​ 184,220 ​ ​ 249,828 ​ ​ 152,992 ​ ​ 80,567 ​ ​ 124,623 ​ ​ 31,491 ​ ​ - ​ ​ 870,115 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Construction ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,837 ​ ​ 65,640 ​ ​ 52,420 ​ ​ 31,388 ​ ​ 1,895 ​ ​ 1,298 ​ ​ 1,895 ​ ​ - ​ ​ 156,373 Special Mention ​ ​ 307 ​ ​ 7,577 ​ ​ - ​ ​ 10,185 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 18,069 Substandard ​ ​ - ​ ​ 125 ​ ​ - ​ ​ - ​ ​ 116 ​ ​ - ​ ​ - ​ ​ - ​ ​ 241 Total construction ​ ​ 2,144 ​ ​ 73,342 ​ ​ 52,420 ​ ​ 41,573 ​ ​ 2,011 ​ ​ 1,298 ​ ​ 1,895 ​ ​ - ​ ​ 174,683 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2023 2022 2021 2020 2019 Prior Revolving Loans Revolving Loans Converted To Term Loans Total Residential real estate – investor ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,314 ​ ​ 14,371 ​ ​ 9,806 ​ ​ 6,790 ​ ​ 8,147 ​ ​ 12,739 ​ ​ 1,782 ​ ​ - ​ ​ 54,949 Special Mention ​ ​ - ​ ​ - ​ ​ 69 ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ 69 Substandard ​ ​ - ​ ​ 617 ​ ​ - ​ ​ - ​ ​ 499 ​ ​ 586 ​ ​ - ​ ​ - ​ ​ 1,702 Total residential real estate – investor ​ ​ 1,314 ​ ​ 14,988 ​ ​ 9,875 ​ ​ 6,790 ​ ​ 8,646 ​ ​ 13,325 ​ ​ 1,782 ​ ​ - ​ ​ 56,720 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Residential real estate – owner occupied ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 2,876 ​ ​ 42,607 ​ ​ 43,687 ​ ​ 27,668 ​ ​ 15,777 ​ ​ 80,086 ​ ​ 1,536 ​ ​ - ​ ​ 214,237 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ 46 ​ ​ 128 ​ ​ 203 ​ ​ 94 ​ ​ 708 ​ ​ 2,439 ​ ​ - ​ ​ - ​ ​ 3,618 Total residential real estate – owner occupied ​ ​ 2,922 ​ ​ 42,735 ​ ​ 43,890 ​ ​ 27,762 ​ ​ 16,485 ​ ​ 82,525 ​ ​ 1,536 ​ ​ - ​ ​ 217,855 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Multifamily ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 32,158 ​ ​ 83,074 ​ ​ 116,721 ​ ​ 59,094 ​ ​ 12,976 ​ ​ 44,737 ​ ​ 294 ​ ​ - ​ ​ 349,054 Special Mention ​ ​ - ​ ​ 375 ​ ​ 3,632 ​ ​ 341 ​ ​ 1,683 ​ ​ 558 ​ ​ - ​ ​ - ​ ​ 6,589 Substandard ​ ​ - ​ ​ 2,777 ​ ​ - ​ ​ - ​ ​ - ​ ​ 571 ​ ​ - ​ ​ - ​ ​ 3,348 Total multifamily ​ ​ 32,158 ​ ​ 86,226 ​ ​ 120,353 ​ ​ 59,435 ​ ​ 14,659 ​ ​ 45,866 ​ ​ 294 ​ ​ - ​ ​ 358,991 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ HELOC ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 438 ​ ​ 2,891 ​ ​ 490 ​ ​ 1,480 ​ ​ 1,667 ​ ​ 2,937 ​ ​ 92,403 ​ ​ - ​ ​ 102,306 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ 29 ​ ​ 1 ​ ​ - ​ ​ 1 ​ ​ 339 ​ ​ 2,265 ​ ​ - ​ ​ 2,635 Total HELOC ​ ​ 438 ​ ​ 2,920 ​ ​ 491 ​ ​ 1,480 ​ ​ 1,668 ​ ​ 3,276 ​ ​ 94,668 ​ ​ - ​ ​ 104,941 Current Period Gross charge-offs ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Other ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 1,914 ​ ​ 3,434 ​ ​ 1,955 ​ ​ 346 ​ ​ 120 ​ ​ 144 ​ ​ 17,779 ​ ​ - ​ ​ 25,692 Special Mention ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - ​ ​ - Substandard ​ ​ - ​ ​ - ​ ​ - ​ ​ 1 ​ ​ - ​ ​ - ​ ​ 1 ​ ​ - ​ ​ 2 Total other ​ ​ 1,914 ​ ​ 3,434 ​ ​ 1,955 ​ ​ 347 ​ ​ 120 ​ ​ 144 ​ ​ 17,780 ​ ​ - ​ ​ 25,694 Current Period Gross charge-offs ​ ​ - ​ ​ 3 ​ ​ 16 ​ ​ - ​ ​ - ​ ​ 94 ​ ​ ​ ​ ​ ​ ​ ​ 113 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total loans ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Pass ​ ​ 285,787 ​ ​ 1,122,347 ​ ​ 776,972 ​ ​ 386,029 ​ ​ 174,150 ​ ​ 352,907 ​ ​ 607,219 ​ ​ 378 ​ ​ 3,705,789 Special Mention ​ ​ 307 ​ ​ 33,308 ​ ​ 26,210 ​ ​ 66,590 ​ ​ 21,570 ​ ​ 3,143 ​ ​ 21,163 ​ ​ - ​ ​ 172,291 Substandard ​ ​ 46 ​ ​ 25,760 ​ ​ 21,932 ​ ​ 9,293 ​ ​ 50,816 ​ ​ 13,618 ​ ​ 3,809 ​ ​ - ​ ​ 125,274 Total loans ​ $ 286,140 ​ $ 1,181,415 ​ $ 825,114 ​ $ 461,912 ​ $ 246,536 ​ $ 369,668 ​ $ 632,191 ​ $ 378 ​ $ 4,003,354 Total Current Period Gross charge-offs ​ $ - ​ $ 873 ​ $ 16 ​ $ - ​ $ 12 ​ $ 121 ​ ​ ​ ​ ​ ​ ​ $ 1,022 ​ 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 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2022 2021 2020 2019 2018 Prior Revolving Loans Revolving Loans Converted To Term Loans Total 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 ​

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2023
Other Real Estate Owned
Schedule of activity in the other real estate owned (OREO) portfolio, net of valuation reserve	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ March 31, Other real estate owned 2023 2022 Balance at beginning of period ​ $ 1,561 ​ $ 2,356 ​ Property additions, net of acquisition adjustments ​ ​ 291 ​ ​ 87 ​ Less: ​ ​ ​ ​ ​ ​ ​ Proceeds from property disposals, net of participation purchase and gains/losses ​ ​ 328 ​ ​ 69 ​ Period valuation write-down ​ ​ 269 ​ ​ - ​ Balance at end of period ​ $ 1,255 ​ $ 2,374 ​ ​
Schedule of activity in valuation allowance	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ March 31, ​ 2023 2022 Balance at beginning of period ​ $ 856 ​ $ 1,179 ​ Provision for unrealized losses ​ ​ 269 ​ ​ - ​ Reductions taken on sales ​ ​ (272) ​ ​ - ​ Balance at end of period ​ $ 853 ​ $ 1,179 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Schedule of expenses related to foreclosed assets, net of lease revenue	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ ​ March 31, ​ 2023 2022 Loss (Gain) on sales, net ​ $ 28 ​ $ (49) ​ Provision for unrealized losses ​ ​ 269 ​ ​ - ​ Operating expenses ​ ​ 9 ​ ​ 37 ​ Less: ​ ​ ​ ​ ​ ​ ​ Lease revenue ​ ​ - ​ ​ - ​ Net OREO expense ​ $ 306 ​ $ (12) ​

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2023
Deposits
Schedule of major classifications of deposits	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Noninterest bearing demand ​ $ 1,950,144 ​ $ 2,051,702 ​ Savings ​ ​ 1,108,610 ​ ​ 1,145,592 ​ NOW accounts ​ ​ 608,260 ​ ​ 609,338 ​ Money market accounts ​ ​ 799,300 ​ ​ 862,170 ​ Certificates of deposit of less than $100,000 ​ ​ 238,257 ​ ​ 244,017 ​ Certificates of deposit of $100,000 through $250,000 ​ ​ 147,887 ​ ​ 157,438 ​ Certificates of deposit of more than $250,000 ​ ​ 44,762 ​ ​ 40,466 ​ Total deposits ​ $ 4,897,220 ​ $ 5,110,723 ​ ​ ​ ​ ​ ​ ​ ​ ​

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2023
Borrowings
Summary of borrowings and junior subordinated debentures	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 December 31, 2022 Securities sold under repurchase agreements ​ $ 27,897 ​ $ 32,156 ​ Other short-term borrowings ​ ​ 315,000 ​ ​ 90,000 ​ Junior subordinated debentures ​ ​ 25,773 ​ ​ 25,773 ​ Subordinated debentures ​ ​ 59,318 ​ ​ 59,297 ​ Senior notes ​ ​ 44,611 ​ ​ 44,585 ​ Notes payable and other borrowings ​ ​ - ​ ​ 9,000 ​ Total borrowings ​ $ 472,599 ​ $ 260,811 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Equity Compensation Plans (Tabl

Equity Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2023
Equity Compensation Plans
Summary of changes in nonvested shares of restricted share rights	​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ ​ ​ ​ Weighted ​ ​ Restricted ​ Average ​ ​ Stock Shares ​ Grant Date ​ and Units Fair Value Unvested at January 1 ​ 649,210 ​ $ 12.84 Granted ​ 230,399 ​ ​ 17.21 Vested ​ (117,674) ​ ​ 12.26 Unvested at March 31 ​ 761,935 ​ $ 14.25 ​ ​ ​ ​ ​ ​

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2023
Earnings Per Share
Schedule of Earnings Per Share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, ​ ​ ​ 2023 2022 Basic earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average common shares outstanding ​ ​ 44,619,118 ​ ​ 44,461,045 ​ ​ Net income ​ $ 23,607 ​ $ 12,020 ​ ​ Basic earnings per share ​ $ 0.53 ​ $ 0.27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Diluted earnings per share: ​ ​ ​ ​ ​ ​ ​ ​ Weighted-average common shares outstanding ​ ​ 44,619,118 ​ ​ 44,461,045 ​ ​ Dilutive effect of unvested restricted awards 1 ​ ​ 697,480 ​ ​ 700,670 ​ ​ Diluted average common shares outstanding ​ ​ 45,316,598 ​ ​ 45,161,715 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Net Income ​ $ 23,607 ​ $ 12,020 ​ ​ Diluted earnings per share ​ $ 0.52 ​ $ 0.27 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 1 Includes the common stock equivalents for restricted share rights that are dilutive. ​

Regulatory & Capital Matters (T

Regulatory & Capital Matters (Tables)	3 Months Ended
	Mar. 31, 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 ​ March 31, 2023 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Common equity tier 1 capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ $ 478,610 ​ 9.91 % ​ $ 338,070 ​ 7.00 % ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 11.98 ​ ​ ​ 337,721 ​ 7.00 ​ ​ $ 313,598 ​ 6.50 % Total capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 617,527 ​ 12.79 ​ ​ ​ 506,961 ​ 10.50 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 631,903 ​ 13.10 ​ ​ ​ 506,487 ​ 10.50 ​ ​ ​ 482,369 ​ 10.00 ​ Tier 1 capital to risk weighted assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 503,610 ​ 10.43 ​ ​ ​ 410,420 ​ 8.50 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 11.98 ​ ​ ​ 410,090 ​ 8.50 ​ ​ ​ 385,967 ​ 8.00 ​ Tier 1 capital to average assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Consolidated ​ ​ 503,610 ​ 8.56 ​ ​ ​ 235,332 ​ 4.00 ​ ​ ​ N/A ​ N/A ​ Old Second Bank ​ ​ 577,986 ​ 9.83 ​ ​ ​ 235,193 ​ 4.00 ​ ​ ​ 293,991 ​ 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)	3 Months Ended
	Mar. 31, 2023
Fair Value Measurements
Schedule of balance of assets and liabilities which are measured at fair value on a recurring basis	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Level 1 Level 2 Level 3 Total Assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Securities available-for-sale ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ U.S. Treasury ​ $ 214,734 ​ $ - ​ $ - ​ $ 214,734 U.S. government agencies ​ ​ - ​ ​ 56,703 ​ ​ - ​ ​ 56,703 U.S. government agencies mortgage-backed ​ ​ - ​ ​ 121,938 ​ ​ - ​ ​ 121,938 States and political subdivisions ​ ​ - ​ ​ 218,527 ​ ​ 14,979 ​ ​ 233,506 Corporate bonds ​ ​ - ​ ​ 9,762 ​ ​ - ​ ​ 9,762 Collateralized mortgage obligations ​ ​ - ​ ​ 454,106 ​ ​ - ​ ​ 454,106 Asset-backed securities ​ ​ - ​ ​ 189,753 ​ ​ - ​ ​ 189,753 Collateralized loan obligations ​ ​ - ​ ​ 174,566 ​ ​ - ​ ​ 174,566 Loans held-for-sale ​ ​ - ​ ​ 946 ​ ​ - ​ ​ 946 Mortgage servicing rights ​ ​ - ​ ​ - ​ ​ 10,784 ​ ​ 10,784 Interest rate swap agreements, including risk participation agreement ​ ​ - ​ ​ 5,885 ​ ​ - ​ ​ 5,885 Mortgage banking derivatives ​ ​ - ​ ​ 28 ​ ​ - ​ ​ 28 Total ​ $ 214,734 ​ $ 1,232,214 ​ $ 25,763 ​ $ 1,472,711 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swap agreements, including risk participation agreements ​ $ - ​ $ 10,007 ​ $ - ​ $ 10,007 Total ​ $ - ​ $ 10,007 ​ $ - ​ $ 10,007 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 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 into Level 3 ​ ​ - ​ - ​ - ​ ​ - Transfers out of Level 3 ​ ​ (14,885) ​ (6,764) ​ - ​ ​ - Total gains or losses ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Included in earnings ​ ​ (11) ​ - ​ (33) ​ ​ (471) Included in other comprehensive income ​ ​ 226 ​ (6) ​ 423 ​ ​ - Purchases, issuances, sales, and settlements ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Purchases ​ ​ - ​ - ​ 406 ​ ​ - Issuances ​ ​ - ​ - ​ - ​ ​ 120 Settlements ​ ​ (342) ​ - ​ (46) ​ ​ (54) Ending balance March 31, 2023 ​ $ - $ - $ 14,979 ​ $ 10,784 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended March 31, 2022 ​ ​ ​ Securities available-for-sale ​ ​ ​ ​ ​ ​ States and ​ Mortgage ​ ​ ​ Political ​ Servicing ​ ​ Subdivisions Rights Beginning balance January 1, 2022 ​ $ 14,092 ​ $ 7,097 ​ Transfers into Level 3 ​ ​ - ​ ​ - ​ Transfers out of Level 3 ​ ​ - ​ ​ - ​ Total gains or losses ​ ​ ​ ​ ​ ​ ​ Included in earnings ​ ​ (33) ​ ​ 3,228 ​ Included in other comprehensive income ​ ​ (938) ​ ​ - ​ Purchases, issuances, sales, and settlements ​ ​ ​ ​ ​ ​ ​ Purchases ​ ​ 1,076 ​ ​ - ​ Issuances ​ ​ - ​ ​ 301 ​ Settlements ​ ​ (364) ​ ​ (250) ​ Ending balance March 31, 2022 ​ $ 13,833 ​ $ 10,376 ​ ​
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 March 31, 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 ​ $ 14,979 ​ Discounted Cash Flow ​ Discount Rate ​ 2.8 - 4.8% ​ 4.4 % ​ ​ ​ ​ ​ ​ ​ Liquidity Premium ​ 0.3 - 0.5% ​ 0.5 % ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Mortgage servicing rights ​ $ 10,784 ​ Discounted Cash Flow ​ Discount Rate ​ 9.0 - 11.0% ​ 9.0 % ​ ​ ​ ​ ​ ​ ​ Prepayment Speed ​ 4.2 - 29.1% ​ 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	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ Level 1 Level 2 Level 3 Total Individually evaluated loans 1 ​ $ - ​ $ - ​ $ 48,285 ​ $ 48,285 Other real estate owned, net 2 ​ ​ - ​ ​ - ​ ​ 1,255 ​ ​ 1,255 Total ​ $ - ​ $ - ​ $ 49,540 ​ $ 49,540 ​ 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 $69.6 million and a valuation allowance of $21.4 million resulting in an increase of specific allocations within the allowance for credit losses on loans of $3.8 million for the three months ended March 31, 2023. 2 OREO is measured at fair value, less costs to sell, and had a net carrying amount of $1.3 million at March 31, 2023, which is made up of the outstanding balance of $2.2 million, net of a purchase accounting adjustment of $131,000 and a valuation allowance of $853,000 . ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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)	3 Months Ended
	Mar. 31, 2023
Fair Values of Financial Instruments
Schedule of carrying amount and estimated fair values of financial instruments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ ​ Carrying ​ Fair ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Amount Value Level 1 Level 2 Level 3 Financial assets: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and due from banks ​ $ 50,860 ​ $ 50,860 ​ $ 50,860 ​ $ - ​ $ - Interest earning deposits with financial institutions ​ ​ 52,162 ​ ​ 52,162 ​ ​ 52,162 ​ ​ - ​ ​ - Securities available-for-sale ​ ​ 1,455,068 ​ ​ 1,455,068 ​ ​ 214,734 ​ ​ 1,225,355 ​ ​ 14,979 FHLBC and FRBC stock ​ ​ 30,205 ​ ​ 30,205 ​ ​ - ​ ​ 30,205 ​ ​ - Loans held-for-sale ​ ​ 946 ​ ​ 946 ​ ​ - ​ ​ 946 ​ ​ - Net loans ​ ​ 4,003,354 ​ ​ 3,842,384 ​ ​ - ​ ​ - ​ ​ 3,842,384 Mortgage servicing rights ​ ​ 10,784 ​ ​ 10,784 ​ ​ - ​ ​ - ​ ​ 10,784 Interest rate swap agreements ​ ​ 5,735 ​ ​ 5,735 ​ ​ - ​ ​ 5,735 ​ ​ - Interest rate lock commitments and forward contracts ​ ​ 28 ​ ​ 28 ​ ​ - ​ ​ 28 ​ ​ - Interest receivable on securities and loans ​ ​ 24,214 ​ ​ 24,214 ​ ​ - ​ ​ 24,214 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial liabilities: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Noninterest bearing deposits ​ $ 1,950,144 ​ $ 1,950,144 ​ $ 1,950,144 ​ $ - ​ $ - Interest bearing deposits ​ ​ 2,947,076 ​ ​ 2,932,989 ​ ​ - ​ ​ 2,932,989 ​ ​ - Securities sold under repurchase agreements ​ ​ 27,897 ​ ​ 27,897 ​ ​ - ​ ​ 27,897 ​ ​ - Other short-term borrowings ​ ​ 315,000 ​ ​ 315,000 ​ ​ - ​ ​ 315,000 ​ ​ - Junior subordinated debentures ​ ​ 25,773 ​ ​ 19,330 ​ ​ - ​ ​ 19,330 ​ ​ - Subordinated debentures ​ ​ 59,318 ​ ​ 46,118 ​ ​ - ​ ​ 46,118 ​ ​ - Senior notes ​ ​ 44,611 ​ ​ 41,011 ​ ​ 41,011 ​ ​ - ​ ​ - Interest rate swap agreements ​ ​ 10,006 ​ ​ 10,006 ​ ​ - ​ ​ 10,006 ​ ​ - Interest payable on deposits and borrowings ​ ​ 2,029 ​ ​ 2,029 ​ ​ - ​ ​ 2,029 ​ ​ - ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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)	3 Months Ended
	Mar. 31, 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	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 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 1,824 ​ Other Liabilities 6,095 Total derivatives designated as hedging instruments ​ ​ ​ ​ ​ 1,824 ​ ​ 6,095 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Derivatives not designated as hedging instruments ​ ​ ​ ​ ​ ​ ​ ​ ​ Interest rate swaps with commercial loan customers 19 ​ 108,150 ​ Other Assets 3,911 ​ Other Liabilities 3,911 Interest rate lock commitments and forward contracts 41 ​ 10,930 ​ Other Assets 28 ​ Other Liabilities - Other contracts 4 ​ 44,097 ​ Other Assets 150 ​ Other Liabilities 1 Total derivatives not designated as hedging instruments ​ ​ ​ ​ ​ 4,089 ​ ​ 3,912 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ March 31, 2023 ​ December 31, 2022 ​ ​ Fixed Variable Total Fixed Variable Total Letters of credit: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Borrower: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Financial standby ​ $ 3,456 ​ $ 15,390 ​ $ 18,846 ​ $ 3,514 ​ $ 15,365 ​ $ 18,879 ​ Performance standby ​ ​ 1,913 ​ ​ 11,799 ​ ​ 13,712 ​ ​ 3,161 ​ ​ 13,989 ​ ​ 17,150 ​ ​ ​ ​ 5,369 ​ ​ 27,189 ​ ​ 32,558 ​ ​ 6,675 ​ ​ 29,354 ​ ​ 36,029 ​ Non-borrower: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Performance standby ​ ​ - ​ ​ 67 ​ ​ 67 ​ ​ - ​ ​ 67 ​ ​ 67 ​ Total letters of credit ​ $ 5,369 ​ $ 27,256 ​ $ 32,625 ​ $ 6,675 ​ $ 29,421 ​ $ 36,096 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Unused loan commitments: ​ $ 138,829 ​ $ 800,693 ​ $ 939,522 ​ $ 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	May 08, 2023	Apr. 18, 2023
Subsequent Events
Cash dividend declared (per share)		$ 0.05
Dividends paid	$ 2.2

Acquisition (Details)

Acquisition (Details) - USD ($)	Dec. 01, 2021	Mar. 31, 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	3 Months Ended
	Mar. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)
Securities Available-for-Sale
Amortized Cost	$ 1,560,643	$ 1,662,819
Gross Unrealized Gains	1,333	370
Gross Unrealized Losses	(106,908)	(123,830)
Securities available-for-sale	1,455,068	1,539,359
Accrued interest receivable	7,200	6,800
FHLB and FRB Stock
FHLBC stock	15,300	5,600
FRBC stock	14,900	14,900
Securities pledged to secure deposits and for other purposes	995,300	547,800
Other disclosures
Securities available-for-sale	1,455,068	1,539,359
Total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal	$ 20,300
Percentage of total added credit enhancement in the form of overcollaterization and/or subordination of outstanding principal	9.29
Number of securities issued from originators | item	0
Number of originators | item	1
Minimum percentage of securities investment	10%
Reimbursement requests greater than 5 %
Other disclosures
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	85
Percent of insured loan	5
Reimbursement requests greater than 9 %
Other disclosures
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	75
Percent of insured loan	9
U.S. Treasury
Securities Available-for-Sale
Amortized Cost	$ 224,195	224,054
Gross Unrealized Losses	(9,461)	(11,925)
Securities available-for-sale	214,734	212,129
Other disclosures
Securities available-for-sale	214,734	212,129
U.S. government agencies
Securities Available-for-Sale
Amortized Cost	60,952	61,178
Gross Unrealized Losses	(4,249)	(5,130)
Securities available-for-sale	56,703	56,048
Other disclosures
Securities available-for-sale	56,703	56,048
U.S. government agencies mortgage-backed
Securities Available-for-Sale
Amortized Cost	135,504	140,588
Gross Unrealized Losses	(13,566)	(15,598)
Securities available-for-sale	121,938	124,990
Other disclosures
Securities available-for-sale	121,938	124,990
States and political subdivisions
Securities Available-for-Sale
Amortized Cost	243,131	239,999
Gross Unrealized Gains	1,329	363
Gross Unrealized Losses	(10,954)	(14,234)
Securities available-for-sale	233,506	226,128
Other disclosures
Securities available-for-sale	233,506	226,128
Corporate bonds
Securities Available-for-Sale
Amortized Cost	10,000	10,000
Gross Unrealized Losses	(238)	(378)
Securities available-for-sale	9,762	9,622
Other disclosures
Securities available-for-sale	9,762	9,622
Collateralized mortgage obligations
Securities Available-for-Sale
Amortized Cost	510,992	596,336
Gross Unrealized Gains		1
Gross Unrealized Losses	(56,886)	(62,569)
Securities available-for-sale	454,106	533,768
Other disclosures
Securities available-for-sale	454,106	533,768
Asset-backed Securities
Securities Available-for-Sale
Amortized Cost	196,966	210,388
Gross Unrealized Gains	4	6
Gross Unrealized Losses	(7,217)	(8,466)
Securities available-for-sale	189,753	201,928
Other disclosures
Securities available-for-sale	189,753	201,928
FFEL
Securities Available-for-Sale
Securities available-for-sale	148,900
Other disclosures
Securities available-for-sale	$ 148,900
Percentage of outstanding principal amount of loans guaranteed by US Department of Education	97
Collateralized loan obligations.
Securities Available-for-Sale
Amortized Cost	$ 178,903	180,276
Gross Unrealized Losses	(4,337)	(5,530)
Securities available-for-sale	174,566	174,746
Other disclosures
Securities available-for-sale	$ 174,566	$ 174,746

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Securities Available-for-Sale, Amortized Cost
Due in one year or less	$ 64,076
Due after one year through five years	245,837
Due after five years through ten years	48,750
Due after ten years	179,615
Debt securities excluding securities not due at a single maturity date	538,278
Total	$ 1,560,643	$ 1,662,819
Securities Available-for-Sale, Weighted Average Yield
Due in one year or less (as a percent)	0.72%
Due after one year through five years (as a percent)	1.14%
Due after five years through ten years (as a percent)	3.02%
Due after ten years (as a percent)	3.06%
Debt securities (as a percent)	1.90%
Total (as a percent)	3.04%
Securities Available-for-Sale, Fair Value
Due in one year or less	$ 62,639
Due after one year through five years	233,060
Due after five years through ten years	45,537
Due after ten years	173,469
Debt securities	514,705
Debt Securities, Available-for-sale, Total	1,455,068	1,539,359
Mortgage-backed and collateralized mortgage obligations
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	$ 646,496
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	2.41%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 576,044
Asset-backed Securities
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	196,966
Total	$ 196,966	210,388
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	5.12%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 189,753
Debt Securities, Available-for-sale, Total	189,753	201,928
Collateralized loan obligations.
Securities Available-for-Sale, Amortized Cost
Securities not due at a single maturity date	178,903
Total	$ 178,903	180,276
Securities Available-for-Sale, Weighted Average Yield
Securities not due at a single maturity date, Weighted Average Yield (as a percent)	6.45%
Securities Available-for-Sale, Fair Value
Securities not due at a single maturity date	$ 174,566
Debt Securities, Available-for-sale, Total	$ 174,566	$ 174,746

Securities - Unrealized Loss Po

Securities - Unrealized Loss Positions (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) security
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	46	194
Greater than 12 months in an unrealized loss position | security	392	299
Total	438	493
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 2,338,000	$ 27,304,000
Greater than 12 months in an unrealized loss position	104,570,000	96,526,000
Total	106,908,000	123,830,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	132,476,000	579,571,000
Greater than 12 months in an unrealized loss position	1,218,935,000	906,689,000
Total	$ 1,351,411,000	$ 1,486,260,000
Effective duration (in years)	3 years 2 months 12 days
Credit losses were determined	$ 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	4
Total	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	$ 9,461,000	10,900,000
Total	9,461,000	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	214,734,000	188,008,000
Total	$ 214,734,000	$ 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
Total	9	9
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 4,249,000	$ 5,130,000
Total	4,249,000	5,130,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	56,703,000	56,048,000
Total	$ 56,703,000	$ 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	15
Greater than 12 months in an unrealized loss position | security	127	117
Total	130	132
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 143,000	$ 975,000
Greater than 12 months in an unrealized loss position	13,423,000	14,623,000
Total	13,566,000	15,598,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	2,235,000	11,369,000
Greater than 12 months in an unrealized loss position	119,703,000	113,621,000
Total	$ 121,938,000	$ 124,990,000
States and political subdivisions
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	14	45
Greater than 12 months in an unrealized loss position | security	24	15
Total	38	60
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 434,000	$ 5,800,000
Greater than 12 months in an unrealized loss position	10,520,000	8,434,000
Total	10,954,000	14,234,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	47,760,000	128,770,000
Greater than 12 months in an unrealized loss position	82,401,000	48,877,000
Total	$ 130,161,000	$ 177,647,000
Corporate bonds
Securities Available-for-Sale, Number of Securities
Greater than 12 months in an unrealized loss position | security	2	2
Total	2	2
Securities Available-for-Sale, Unrealized Losses
Greater than 12 months in an unrealized loss position	$ 238,000	$ 378,000
Total	238,000	378,000
Securities Available-for-Sale, Fair Value
Greater than 12 months in an unrealized loss position	9,762,000	9,622,000
Total	$ 9,762,000	$ 9,622,000
Collateralized mortgage obligations
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	13	80
Greater than 12 months in an unrealized loss position | security	157	120
Total	170	200
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 794,000	$ 12,895,000
Greater than 12 months in an unrealized loss position	56,092,000	49,674,000
Total	56,886,000	62,569,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	23,540,000	180,624,000
Greater than 12 months in an unrealized loss position	430,566,000	348,880,000
Total	$ 454,106,000	$ 529,504,000
Asset-backed Securities
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	11	30
Greater than 12 months in an unrealized loss position | security	39	21
Total	50	51
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 745,000	$ 3,030,000
Greater than 12 months in an unrealized loss position	6,472,000	5,436,000
Total	7,217,000	8,466,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	45,309,000	121,915,000
Greater than 12 months in an unrealized loss position	144,132,000	79,659,000
Total	$ 189,441,000	$ 201,574,000
Collateralized loan obligations.
Securities Available-for-Sale, Number of Securities
Less than 12 months in an unrealized loss position | security	5	23
Greater than 12 months in an unrealized loss position | security	29	11
Total	34	34
Securities Available-for-Sale, Unrealized Losses
Less than 12 months in an unrealized loss position	$ 222,000	$ 3,579,000
Greater than 12 months in an unrealized loss position	4,115,000	1,951,000
Total	4,337,000	5,530,000
Securities Available-for-Sale, Fair Value
Less than 12 months in an unrealized loss position	13,632,000	112,772,000
Greater than 12 months in an unrealized loss position	160,934,000	61,974,000
Total	$ 174,566,000	$ 174,746,000

Securities - Realized Gain (Los

Securities - Realized Gain (Loss) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Securities
Proceeds from sales of securities	$ 66,170
Gross realized losses on securities	(1,675)
Net realized losses	(1,675)
Income tax benefit on net realized losses	$ 471
Effective tax rate applied (as a percent)	28.10%

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses on Loans - Major Classifications (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans
Total Loans	$ 4,003,354	$ 3,869,609
Allowance for credit losses	(53,392)	(49,480)
Net loans	3,949,962	3,820,129
Total loans	55,179	50,478
Loans and leases receivable, accrued interest receivable	17,000	15,900
Paycheck Protection Program (PPP)
Loans
Total Loans	1,300	1,600
Commercial
Loans
Total Loans	851,737	840,964
Total loans	1,964	7,162
Leases
Loans
Total Loans	285,831	277,385
Total loans	683	1,248
Commercial real estate - Investor
Loans
Total Loans	1,056,787	987,635
Total loans	30,368	16,576
Commercial real estate - Owner occupied
Loans
Total Loans	870,115	854,879
Total loans	18,293	21,498
Construction
Loans
Total Loans	174,683	180,535
Total loans	116
Residential real estate - Investor
Loans
Total Loans	56,720	57,353
Total loans	675	675
Residential real estate - Owner occupied
Loans
Total Loans	217,855	219,718
Total loans	1,541	1,817
Multifamily
Loans
Total loans, excluding deferred loan costs and PCI loans	358,991	323,691
Total Loans	358,991	323,691
Total loans	1,308	1,322
HELOC
Loans
Total Loans	104,941	109,202
Total loans	231	180
Other
Loans
Total Loans	$ 25,694	$ 18,247

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses on Loans - Major Classifications - Loan Concentrations (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Real estate | Loan receivables | Customer Concentration Risk
Loans
Loans receivable as a percentage of total portfolio	70.90%	70.60%

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses on Loans (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Allowance for loan losses:
Beginning Balance	$ 49,480,000	$ 44,281,000
(Release of) Provision for Credit Losses	4,652,000	320,000
Charge-offs	1,022,000	514,000
Recoveries	282,000	221,000
Ending Balance	53,392,000	44,308,000
ACL Allocation	53,392,000		$ 49,480,000
Net provision expense	3,500,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	596,000
Commercial
Allowance for loan losses:
Beginning Balance	11,968,000	11,751,000
(Release of) Provision for Credit Losses	(581,000)	825,000
Charge-offs	27,000	30,000
Recoveries	151,000	30,000
Ending Balance	11,511,000	12,576,000
Leases
Allowance for loan losses:
Beginning Balance	2,865,000	3,480,000
(Release of) Provision for Credit Losses	774,000	(907,000)
Charge-offs	882,000
Recoveries	9,000
Ending Balance	2,766,000	2,573,000
Commercial real estate - Investor
Allowance for loan losses:
Beginning Balance	10,674,000	10,795,000
(Release of) Provision for Credit Losses	4,569,000	108,000
Charge-offs		236,000
Recoveries	17,000	23,000
Ending Balance	15,260,000	10,690,000
Commercial real estate - Owner occupied
Allowance for loan losses:
Beginning Balance	15,001,000	4,913,000
(Release of) Provision for Credit Losses	573,000	3,339,000
Charge-offs		121,000
Recoveries	2,000	8,000
Ending Balance	15,576,000	8,139,000
Real estate - construction
Allowance for loan losses:
Beginning Balance	1,546,000	3,373,000
(Release of) Provision for Credit Losses	(501,000)	(515,000)
Ending Balance	1,045,000	2,858,000
Residential real estate - Investor
Allowance for loan losses:
Beginning Balance	768,000	760,000
(Release of) Provision for Credit Losses	(41,000)	(67,000)
Recoveries	19,000	10,000
Ending Balance	746,000	703,000
Residential real estate - Owner occupied
Allowance for loan losses:
Beginning Balance	2,046,000	2,832,000
(Release of) Provision for Credit Losses	(334,000)	(965,000)
Recoveries	10,000	83,000
Ending Balance	1,722,000	1,950,000
Multifamily
Allowance for loan losses:
Beginning Balance	2,453,000	3,675,000
(Release of) Provision for Credit Losses	212,000	(698,000)
Ending Balance	2,665,000	2,977,000
HELOC
Allowance for loan losses:
Beginning Balance	1,806,000	2,510,000
(Release of) Provision for Credit Losses	(47,000)	(870,000)
Recoveries	29,000	35,000
Ending Balance	1,788,000	1,675,000
Other
Allowance for loan losses:
Beginning Balance	353,000	192,000
(Release of) Provision for Credit Losses	28,000	70,000
Charge-offs	113,000	127,000
Recoveries	45,000	32,000
Ending Balance	313,000	167,000
Unfunded Loan Commitment
Allowance for loan losses:
Beginning Balance	4,300,000
Ending Balance	3,200,000	4,200,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	596,000	$ 1,500,000	$ 819,000
Unfunded Loan Commitment | Other Liabilities [Member]
Allowance for loan losses:
ACL on unfunded commitments	$ 3,800,000

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses on Loans - Collateral dependent loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	$ 55,179	$ 50,478
ACL Allocation	53,392	49,480
Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	51,110	40,641
Accounts Receivable | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	729	5,915
Equipment | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	683	1,248
Other. | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,657	2,674
Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	14,374	10,744
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,964	7,162
Commercial | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	871	883
Commercial | Accounts Receivable | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	729	5,915
Commercial | Other. | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	364	364
Commercial | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	480	569
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	683	1,248
Leases | Equipment | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	683	1,248
Leases | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	683	1,248
Commercial real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	30,368	16,576
Commercial real estate - Investor | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	30,368	16,576
Commercial real estate - Investor | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	7,654	2,875
Commercial real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	18,293	21,498
Commercial real estate - Owner occupied | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	16,000	19,188
Commercial real estate - Owner occupied | Other. | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	2,293	2,310
Commercial real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	5,510	5,808
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	116
Construction | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	116
Residential real estate - Investor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	675	675
Residential real estate - Investor | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	675	675
Residential real estate - Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,541	1,817
Residential real estate - Owner occupied | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,541	1,817
Residential real estate - Owner occupied | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation		244
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,308	1,322
Multifamily | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	1,308	1,322
HELOC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	231	180
HELOC | Real Estate | Asset Pledged as Collateral without Right
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged as collateral	231	$ 180
HELOC | Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	$ 47

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses on Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Aged analysis of past due loans
Total Loans	$ 4,003,354	$ 3,869,609
Total loans, including deferred loan loan costs and PCI	3,949,962	3,820,129
Recorded Investment 90 days or Greater Past Due and Accruing	966	1,262
Special Mention [Member]
Aged analysis of past due loans
Total Loans	172,291	179,029
Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	60,909
Total Past Due Including PCI loans		22,214
30 to 59 Days Past Due
Aged analysis of past due loans
Current	17,055
Total Past Due Including PCI loans		6,326
60 to 89 Days Past Due
Aged analysis of past due loans
Current	32,539
Total Past Due Including PCI loans		2,874
90 Days or Greater Past Due
Aged analysis of past due loans
Current	11,315
Total Past Due Including PCI loans		13,014
Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	3,942,445
Current including PCI Loans		3,847,395
Commercial
Aged analysis of past due loans
Total Loans	851,737	840,964
Recorded Investment 90 days or Greater Past Due and Accruing	460	460
Commercial | Special Mention [Member]
Aged analysis of past due loans
Total Loans	25,433	27,047
Commercial | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	4,062	1,840
Commercial | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	2,640	3
Commercial | 60 to 89 Days Past Due
Aged analysis of past due loans
Current		1,012
Commercial | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,422	825
Commercial | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	847,675	839,124
Leases
Aged analysis of past due loans
Total Loans	285,831	277,385
Leases | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	840	1,083
Leases | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	789	447
Leases | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	51	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	284,991	276,302
Commercial real estate - Investor
Aged analysis of past due loans
Total Loans	1,056,787	987,635
Commercial real estate - Investor | Special Mention [Member]
Aged analysis of past due loans
Total Loans	10,538	32,655
Commercial real estate - Investor | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	30,379	8,867
Commercial real estate - Investor | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	5,395	3,276
Commercial real estate - Investor | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	22,966	1,276
Commercial real estate - Investor | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	2,018	4,315
Commercial real estate - Investor | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	1,026,408	978,768
Commercial real estate - Owner occupied
Aged analysis of past due loans
Total Loans	870,115	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	111,593	97,763
Commercial real estate - Owner occupied | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	13,909	2,697
Commercial real estate - Owner occupied | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	2,914	373
Commercial real estate - Owner occupied | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	9,162	113
Commercial real estate - Owner occupied | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,833	2,211
Commercial real estate - Owner occupied | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	856,206	852,182
Real estate - construction
Aged analysis of past due loans
Total Loans	174,683	180,535
Real estate - construction | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	989	130
Real estate - construction | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	873	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	173,694	180,405
Residential real estate - Investor
Aged analysis of past due loans
Total Loans	56,720	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	69	70
Residential real estate - Investor | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	1,555	1,432
Residential real estate - Investor | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	322	445
Residential real estate - Investor | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,233	987
Residential real estate - Investor | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	55,165	55,921
Residential real estate - Owner occupied
Aged analysis of past due loans
Total Loans	217,855	219,718
Recorded Investment 90 days or Greater Past Due and Accruing	420	485
Residential real estate - Owner occupied | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	5,843	3,423
Residential real estate - Owner occupied | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	3,044	1,191
Residential real estate - Owner occupied | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	177
Residential real estate - Owner occupied | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	2,622	2,232
Residential real estate - Owner occupied | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	212,012	216,295
Multifamily
Aged analysis of past due loans
Total Loans	358,991	323,691
Multifamily | Special Mention [Member]
Aged analysis of past due loans
Total Loans	6,589	6,086
Multifamily | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	1,879	1,950
Multifamily | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	217	267
Multifamily | 60 to 89 Days Past Due
Aged analysis of past due loans
Current		361
Multifamily | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	1,662	1,322
Multifamily | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	357,112	321,741
HELOC
Aged analysis of past due loans
Total Loans	104,941	109,202
Recorded Investment 90 days or Greater Past Due and Accruing	86
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	894	773
HELOC | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	303	291
HELOC | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	182	90
HELOC | 90 Days or Greater Past Due
Aged analysis of past due loans
Current	409	392
HELOC | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	104,047	108,429
Other
Aged analysis of past due loans
Total Loans	25,694	18,247
Other | Financial Asset, Past Due [Member]
Aged analysis of past due loans
Current	559	19
Other | 30 to 59 Days Past Due
Aged analysis of past due loans
Current	558	19
Other | 60 to 89 Days Past Due
Aged analysis of past due loans
Current	1
Other | Financial Asset, Not Past Due [Member]
Aged analysis of past due loans
Current	$ 25,135	$ 18,228

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses on Loans - Nonaccruals (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non accrual including PCI Loans	$ 63,561,000	$ 31,602,000
Nonaccrual with no ACL	27,747,000	18,404,000
Interest on nonaccrual loans	86,000
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,351,000	7,189,000
Nonaccrual with no ACL	1,892,000	6,598,000
Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	856,000	1,876,000
Nonaccrual with no ACL	173,000
Commercial real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	30,397,000	4,346,000
Nonaccrual with no ACL	11,210,000	4,244,000
Commercial real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	19,691,000	8,050,000
Nonaccrual with no ACL	4,560,000	3,813,000
Real estate - construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	241,000	251,000
Nonaccrual with no ACL	241,000
Residential real estate - Investor
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	1,555,000	1,528,000
Nonaccrual with no ACL	1,379,000	675,000
Residential real estate - Owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	3,618,000	3,713,000
Nonaccrual with no ACL	3,618,000	1,572,000
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,495,000	2,538,000
Nonaccrual with no ACL	2,495,000	1,322,000
HELOC
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,355,000	2,109,000
Nonaccrual with no ACL	2,177,000	180,000
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual	2,000	$ 2,000
Nonaccrual with no ACL	$ 2,000

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses on Loans - Credit Quality (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022	$ 873,000
2021	16,000
2019	12,000
Prior	121,000
Total	1,022,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	286,140,000	$ 1,207,348,000
2022 / 2021	1,181,415,000	886,935,000
2021 / 2020	825,114,000	476,753,000
2020 / 2019	461,912,000	257,206,000
2019 / 2018	246,536,000	167,647,000
Prior	369,668,000	245,580,000
Revolving Loans	632,191,000	628,140,000
Revolving Loans Converted To Term Loans	378,000
Total Loans	4,003,354,000	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	285,787,000	1,165,744,000
2022 / 2021	1,122,347,000	837,389,000
2021 / 2020	776,972,000	401,848,000
2020 / 2019	386,029,000	183,707,000
2019 / 2018	174,150,000	165,368,000
Prior	352,907,000	226,741,000
Revolving Loans	607,219,000	600,854,000
Revolving Loans Converted To Term Loans	378,000
Total Loans	3,705,789,000	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	16,031,000
2022 / 2021	33,308,000	27,684,000
2021 / 2020	26,210,000	70,495,000
2020 / 2019	66,590,000	31,990,000
2019 / 2018	21,570,000	1,301,000
Prior	3,143,000	10,131,000
Revolving Loans	21,163,000	21,397,000
Total Loans	172,291,000	179,029,000
Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	46,000	25,573,000
2022 / 2021	25,760,000	21,862,000
2021 / 2020	21,932,000	4,410,000
2020 / 2019	9,293,000	41,509,000
2019 / 2018	50,816,000	978,000
Prior	13,618,000	8,708,000
Revolving Loans	3,809,000	5,889,000
Total Loans	125,274,000	108,929,000
Commercial
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Prior	27,000
Total	27,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	46,701,000	231,889,000
2022 / 2021	222,200,000	73,327,000
2021 / 2020	53,241,000	25,760,000
2020 / 2019	22,732,000	27,350,000
2019 / 2018	23,416,000	6,964,000
Prior	8,146,000	2,651,000
Revolving Loans	474,923,000	473,023,000
Revolving Loans Converted To Term Loans	378,000
Total Loans	851,737,000	840,964,000
Commercial | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	46,701,000	225,056,000
2022 / 2021	216,848,000	70,608,000
2021 / 2020	51,096,000	21,597,000
2020 / 2019	18,747,000	12,742,000
2019 / 2018	9,511,000	6,957,000
Prior	8,144,000	2,651,000
Revolving Loans	452,217,000	447,821,000
Revolving Loans Converted To Term Loans	378,000
Total Loans	803,642,000	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	582,000	272,000
2021 / 2020	265,000	1,182,000
2020 / 2019	1,088,000	2,432,000
2019 / 2018	2,335,000
Revolving Loans	21,163,000	21,286,000
Total Loans	25,433,000	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	4,770,000	2,447,000
2021 / 2020	1,880,000	2,981,000
2020 / 2019	2,897,000	12,176,000
2019 / 2018	11,570,000	7,000
Prior	2,000
Revolving Loans	1,543,000	3,916,000
Total Loans	22,662,000	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	547,000	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	34,473,000	162,985,000
2022 / 2021	151,031,000	64,203,000
2021 / 2020	58,708,000	26,995,000
2020 / 2019	23,236,000	17,923,000
2019 / 2018	14,963,000	4,449,000
Prior	3,420,000	830,000
Total Loans	285,831,000	277,385,000
Leases | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	34,473,000	161,379,000
2022 / 2021	150,347,000	64,203,000
2021 / 2020	58,708,000	26,995,000
2020 / 2019	23,236,000	17,653,000
2019 / 2018	14,741,000	4,449,000
Prior	3,420,000	830,000
Total Loans	284,925,000	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	684,000
2020 / 2019		270,000
2019 / 2018	222,000
Total Loans	906,000	1,876,000
Commercial real estate - Investor
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	117,682,000	433,775,000
2022 / 2021	400,319,000	232,121,000
2021 / 2020	234,353,000	123,981,000
2020 / 2019	125,565,000	84,814,000
2019 / 2018	84,001,000	48,005,000
Prior	87,045,000	57,826,000
Revolving Loans	7,822,000	7,113,000
Total Loans	1,056,787,000	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	117,682,000	416,094,000
2022 / 2021	382,638,000	228,686,000
2021 / 2020	230,965,000	118,491,000
2020 / 2019	114,537,000	63,845,000
2019 / 2018	63,123,000	46,935,000
Prior	76,867,000	46,406,000
Revolving Loans	7,822,000	7,113,000
Total Loans	993,634,000	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	3,575,000	1,417,000
2021 / 2020		5,490,000
2020 / 2019	5,904,000	10,206,000
2019 / 2018		1,070,000
Prior	1,059,000	9,123,000
Total Loans	10,538,000	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		12,332,000
2022 / 2021	14,106,000	2,018,000
2021 / 2020	3,388,000
2020 / 2019	5,124,000	10,763,000
2019 / 2018	20,878,000
Prior	9,119,000	2,297,000
Total Loans	52,615,000	27,410,000
Commercial real estate - Owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	46,394,000	180,679,000
2022 / 2021	184,220,000	263,102,000
2021 / 2020	249,828,000	155,044,000
2020 / 2019	152,992,000	81,981,000
2019 / 2018	80,567,000	49,598,000
Prior	124,623,000	90,730,000
Revolving Loans	31,491,000	33,745,000
Total Loans	870,115,000	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	46,394,000	169,703,000
2022 / 2021	160,497,000	223,731,000
2021 / 2020	211,124,000	105,669,000
2020 / 2019	102,743,000	47,351,000
2019 / 2018	46,193,000	49,367,000
Prior	122,535,000	86,660,000
Revolving Loans	31,491,000	33,745,000
Total Loans	720,977,000	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	21,199,000	22,242,000
2021 / 2020	22,244,000	48,184,000
2020 / 2019	49,072,000	17,668,000
2019 / 2018	17,552,000	231,000
Prior	1,526,000	1,008,000
Total Loans	111,593,000	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	2,524,000	17,129,000
2021 / 2020	16,460,000	1,191,000
2020 / 2019	1,177,000	16,962,000
2019 / 2018	16,822,000
Prior	562,000	3,062,000
Total Loans	37,545,000	40,890,000
Construction
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	2,144,000	54,275,000
2022 / 2021	73,342,000	65,758,000
2021 / 2020	52,420,000	54,839,000
2020 / 2019	41,573,000	2,506,000
2019 / 2018	2,011,000	226,000
Prior	1,298,000	1,408,000
Revolving Loans	1,895,000	1,523,000
Total Loans	174,683,000	180,535,000
Construction | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,837,000	53,058,000
2022 / 2021	65,640,000	65,758,000
2021 / 2020	52,420,000	39,542,000
2020 / 2019	31,388,000	2,390,000
2019 / 2018	1,895,000	226,000
Prior	1,298,000	1,408,000
Revolving Loans	1,895,000	1,523,000
Total Loans	156,373,000	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
2022 / 2021	7,577,000
2021 / 2020		15,297,000
2020 / 2019	10,185,000
Total Loans	18,069,000	15,297,000
Construction | Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022		1,217,000
2022 / 2021	125,000
2020 / 2019		116,000
2019 / 2018	116,000
Total Loans	241,000	1,333,000
Residential real estate - Investor
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,314,000	15,358,000
2022 / 2021	14,988,000	9,980,000
2021 / 2020	9,875,000	6,945,000
2020 / 2019	6,790,000	9,084,000
2019 / 2018	8,646,000	5,039,000
Prior	13,325,000	9,956,000
Revolving Loans	1,782,000	991,000
Total Loans	56,720,000	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	1,314,000	14,737,000
2022 / 2021	14,371,000	9,910,000
2021 / 2020	9,806,000	6,945,000
2020 / 2019	6,790,000	8,585,000
2019 / 2018	8,147,000	4,853,000
Prior	12,739,000	9,548,000
Revolving Loans	1,782,000	991,000
Total Loans	54,949,000	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	69,000
Total Loans	69,000	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	617,000
2020 / 2019		499,000
2019 / 2018	499,000	186,000
Prior	586,000	408,000
Total Loans	1,702,000	1,714,000
Residential real estate - Owner occupied
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	2,922,000	42,016,000
2022 / 2021	42,735,000	45,151,000
2021 / 2020	43,890,000	28,655,000
2020 / 2019	27,762,000	16,869,000
2019 / 2018	16,485,000	12,283,000
Prior	82,525,000	73,106,000
Revolving Loans	1,536,000	1,638,000
Total Loans	217,855,000	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	2,876,000	41,885,000
2022 / 2021	42,607,000	44,884,000
2021 / 2020	43,687,000	28,418,000
2020 / 2019	27,668,000	16,146,000
2019 / 2018	15,777,000	12,152,000
Prior	80,086,000	70,741,000
Revolving Loans	1,536,000	1,638,000
Total Loans	214,237,000	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	46,000	131,000
2022 / 2021	128,000	267,000
2021 / 2020	203,000	237,000
2020 / 2019	94,000	723,000
2019 / 2018	708,000	131,000
Prior	2,439,000	2,365,000
Total Loans	3,618,000	3,854,000
Multifamily
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	32,158,000	79,354,000
2022 / 2021	86,226,000	129,940,000
2021 / 2020	120,353,000	52,604,000
2020 / 2019	59,435,000	14,809,000
2019 / 2018	14,659,000	40,290,000
Prior	45,866,000	6,365,000
Revolving Loans	294,000	329,000
Total Loans	358,991,000	323,691,000
Multifamily | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	32,158,000	76,877,000
2022 / 2021	83,074,000	126,257,000
2021 / 2020	116,721,000	52,262,000
2020 / 2019	59,094,000	13,125,000
2019 / 2018	12,976,000	39,703,000
Prior	44,737,000	6,098,000
Revolving Loans	294,000	329,000
Total Loans	349,054,000	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	375,000	3,683,000
2021 / 2020	3,632,000	342,000
2020 / 2019	341,000	1,684,000
2019 / 2018	1,683,000
Prior	558,000
Total Loans	6,589,000	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	2,777,000
2019 / 2018		587,000
Prior	571,000	267,000
Total Loans	3,348,000	2,954,000
HELOC
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	438,000	2,822,000
2022 / 2021	2,920,000	518,000
2021 / 2020	491,000	1,497,000
2020 / 2019	1,480,000	1,703,000
2019 / 2018	1,668,000	724,000
Prior	3,276,000	2,597,000
Revolving Loans	94,668,000	99,341,000
Total Loans	104,941,000	109,202,000
HELOC | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	438,000	2,760,000
2022 / 2021	2,891,000	517,000
2021 / 2020	490,000	1,497,000
2020 / 2019	1,480,000	1,703,000
2019 / 2018	1,667,000	657,000
Prior	2,937,000	2,288,000
Revolving Loans	92,403,000	97,258,000
Total Loans	102,306,000	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		62,000
2022 / 2021	29,000	1,000
2021 / 2020	1,000
2019 / 2018	1,000	67,000
Prior	339,000	309,000
Revolving Loans	2,265,000	1,972,000
Total Loans	2,635,000	2,411,000
Other
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2022	3,000
2021	16,000
Prior	94,000
Total	113,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,914,000	4,195,000
2022 / 2021	3,434,000	2,835,000
2021 / 2020	1,955,000	433,000
2020 / 2019	347,000	167,000
2019 / 2018	120,000	69,000
Prior	144,000	111,000
Revolving Loans	17,780,000	10,437,000
Total Loans	25,694,000	18,247,000
Other | Pass [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2023 / 2022	1,914,000	4,195,000
2022 / 2021	3,434,000	2,835,000
2021 / 2020	1,955,000	432,000
2020 / 2019	346,000	167,000
2019 / 2018	120,000	69,000
Prior	144,000	111,000
Revolving Loans	17,779,000	10,436,000
Total Loans	25,692,000	18,245,000
Other | Substandard [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss, by Origination Year [Abstract]
2021 / 2020		1,000
2020 / 2019	1,000
Revolving Loans	1,000	1,000
Total Loans	$ 2,000	$ 2,000

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses on Loans - TDR (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) loan	Mar. 31, 2022 USD ($)
Troubled debt restructurings - modified during the period
Number of TDR loan modifications | loan	0
HELOC | Others [Member]
TDR's defaulted
Pre-modification outstanding recorded investment during the period | $	$ 0	$ 0

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Activity in the other real estate owned (OREO) portfolio, net of valuation reserve
Balance at beginning of period	$ 1,561	$ 2,356
Property additions, net of acquisition adjustments	291	87
Less: Proceeds from property disposals, net of participation purchase and of gains/losses	328	69
Less: Period valuation write-down	269
Balance at end of period	1,255	2,374
Activity in the valuation allowance
Balance at beginning of period	856	1,179
Provision for unrealized losses	269
Reductions taken on sales	(272)
Balance at end of period	853	1,179
Expenses related to foreclosed assets, net of lease revenue
Loss (Gain) on sales, net	28	(49)
Provision for unrealized losses	269
Operating expenses	9	37
Net OREO expense	$ 306	$ (12)

Deposits - Classifications of D

Deposits - Classifications of Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Deposits
Noninterest bearing demand	$ 1,950,144	$ 2,051,702
Savings	1,108,610	1,145,592
NOW accounts	608,260	609,338
Money market accounts	799,300	862,170
Certificates of deposit of less than $100,000	238,257	244,017
Certificates of deposit of $100,000 through $250,000	147,887	157,438
Certificates of deposit of more than $250,000	44,762	40,466
Total deposits	$ 4,897,220	$ 5,110,723

Borrowings - Summary (Details)

Borrowings - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Borrowings
Total borrowings	$ 472,599	$ 260,811
Securities sold under repurchase agreements
Borrowings
Total borrowings	27,897	32,156
Other short-term borrowings
Borrowings
Total borrowings	315,000	90,000
Junior subordinated debentures
Borrowings
Total borrowings	25,773	25,773
Subordinated debentures
Borrowings
Total borrowings	59,318	59,297
Senior notes
Borrowings
Total borrowings	$ 44,611	44,585
Notes payable and other borrowings
Borrowings
Total borrowings		$ 9,000

Borrowings - Additional informa

Borrowings - Additional information (Details)			3 Months Ended
	Feb. 24, 2023 USD ($)	Feb. 24, 2020 USD ($)	Mar. 31, 2023 USD ($) item	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2016	Dec. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Apr. 20, 2018 USD ($)
Borrowings
Securities available-for-sale, at fair value			$ 1,455,068,000				$ 1,539,359,000
Number of customers having secured balances exceeding specified percentage of stockholders equity | item			0
Threshold percentage of stockholders' equity			10%
Borrowings at FHLBC as percentage of total assets			35%
Borrowings at FHLBC as percentage of book value of certain mortgage loans			60%
FHLBC stock			$ 15,300,000				5,600,000
Federal Home Loan Bank Chicago ("FHLBC") and Federal Reserve Bank Chicago ("FRBC") stock			30,205,000				20,530,000
Proceeds from term note		$ 30,000,000
Repayment of term note			9,000,000		$ 1,000,000
Senior notes			44,611,000				44,585,000
Basis points added to reference rate (as a percent)		175%
Total borrowings			472,599,000				260,811,000
Asset Pledged as Collateral with Right | Securities sold under repurchase agreements
Borrowings
Investment securities pledged with financial institutions, dollars							32,200,000
Securities available-for-sale, at fair value			$ 65,900,000				71,400,000
GCFC/ABC Bank
Borrowings
Debt assumed									$ 23,400,000
Balance of borrowings paid off				$ 5,900,000
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			$ 27,897,000				32,156,000
Securities sold under repurchase agreements | Asset Pledged as Collateral with Right | Securities sold under repurchase agreements
Borrowings
Investment securities pledged with financial institutions, dollars			$ 27,900,000
Federal Home Loan Bank Advances
Borrowings
Borrowings at FHLBC as percentage of book value of certain mortgage loans			60%
FHLBC advance amount			$ 315,000,000				90,000,000
FHLBC stock			15,300,000
Principal balance of loans collateralized			1,500,000,000
Combined collateral value			1,060,000,000
Amount available for additional borrowings			743,600,000
Subordinated debentures
Borrowings
Total borrowings			59,318,000				59,297,000
Notes Payable to Banks [Member]
Borrowings
Total borrowings							9,000,000
Junior subordinated debentures
Borrowings
Total borrowings			25,773,000				$ 25,773,000
Senior Notes [Member]
Borrowings
Interest rate (as a percent)						5.75%
Senior notes			$ 44,600,000
Debt Instrument, Term						10 years
Interest rate term						5 years
Effective interest rate			9.01%				8.62%
Debt issuance costs			$ 389,000				$ 415,000
Amortization period for deferred financing costs			10 years
Total borrowings			$ 44,611,000				44,585,000
Debt instrument redemption price, percentage			100%
Senior Notes [Member] | Debt Instrument, Variable Rate Base LIBOR [Member]
Borrowings
Basis points added to reference rate (as a percent)						385%
Term Debt
Borrowings
Proceeds from term note		$ 20,000,000
Repayment of term note	$ 9,000,000
Debt term		3 years
Subordinated Notes Due 2031
Borrowings
Interest rate (as a percent)			3.50%					3.50%
Outstanding, net of deferred issuance costs			$ 59,300,000				$ 59,300,000
Face amount								$ 60,000,000

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	Mar. 31, 2023	Mar. 31, 2022	Jun. 15, 2017	Dec. 31, 2017	Dec. 31, 2022
Junior subordinated debentures
Junior subordinated debentures		$ 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)		4.39%	4.41%
Junior subordinated debentures
Junior subordinated debentures
Junior Subordinated Debentures issuance cost		$ 1,000				$ 1,000
Junior subordinated debentures | Old Second Capital Trust II [Member]
Junior subordinated debentures
Junior subordinated debentures		$ 25,800

Equity Compensation Plans (Deta

Equity Compensation Plans (Details) - USD ($)	1 Months Ended	3 Months Ended
	May 31, 2021	Mar. 31, 2023	Mar. 31, 2022	May 31, 2019
Equity Compensation Plans
Total compensation cost		$ 948,000	$ 795,000
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		970,271

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	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Changes in unvested awards
Nonvested at the beginning of the period (in shares)	649,210
Granted (in shares)	230,399	251,055
Vested (in shares)	(117,674)
Nonvested at the end of the period (in shares)	761,935
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 12.84
Granted (in dollars per share)	17.21
Vested (in dollars per share)	12.26
Nonvested at the end of the period (in dollars per share)	$ 14.25
Additional information
Total unrecognized compensation cost of restricted awards	$ 6.8
Expected weighted-average period for recognition of unrecognized compensation	2 years 3 months

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic earnings per share:
Weighted-average common shares outstanding	44,619,118	44,461,045
Net income	$ 23,607	$ 12,020
Basic earnings per share	$ 0.53	$ 0.27
Diluted earnings per share:
Weighted-average common shares outstanding	44,619,118	44,461,045
Diluted average common shares outstanding	45,316,598	45,161,715
Net earnings available to common stockholders	$ 23,607	$ 12,020
Diluted earnings per share	$ 0.52	$ 0.27
Restricted Stock and Restricted Stock Units [Member]
Diluted earnings per share:
Dilutive effect of share-based payment awards (in shares)	697,480	700,670

Regulatory & Capital Matters (D

Regulatory & Capital Matters (Details) $ in Millions		3 Months Ended
	May 08, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)		0.0856	0.0814
Risk-based capital ratio (as a percent)		0.1279	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)		0.0983	0.0932
Risk-based capital ratio (as a percent)		0.1310	0.1275
Tier One leverage ratio, basis point increase (as a percent)		0.51%
Risk-based capital ratio, basis point increase (as a percent)		0.35%
Risk-based capital ratio, basis point decrease (as a percent)		0.35%
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	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Common equity tier 1 capital to risk weighted assets
Actual	$ 478,610	$ 457,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 338,070	$ 330,966
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.0991%	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	$ 617,527	$ 592,039
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 506,961	$ 496,518
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1279	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	$ 503,610	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 410,420	$ 401,838
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1043	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	$ 503,610	$ 482,206
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	$ 235,332	$ 236,956
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.0856	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	$ 577,986	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	337,721	330,498
Minimum Required to Be Well Capitalized	$ 313,598	$ 306,891
Common equity tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1198%	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	$ 631,903	$ 602,237
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	506,487	495,960
Minimum Required to Be Well Capitalized	$ 482,369	$ 472,343
Total capital to risk weighted assets, Ratio
Risk-based capital ratio (as a percent)	0.1310	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	$ 577,986	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	410,090	401,319
Minimum Required to Be Well Capitalized	$ 385,967	$ 377,712
Tier 1 capital to risk weighted assets, Ratio
Actual (as a percent)	0.1198	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	$ 577,986	$ 552,404
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable	235,193	237,083
Minimum Required to Be Well Capitalized	$ 293,991	$ 296,354
Tier 1 capital to average assets, Ratio
Tier 1 capital leverage ratio (as a percent)	0.0983	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	3 Months Ended
	Mar. 31, 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	$ 51.2

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 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	Mar. 31, 2023	Dec. 31, 2022
Assets:
Securities available-for-sale	$ 1,455,068	$ 1,539,359
Mortgage servicing rights	10,784	11,189
U.S. Treasury
Assets:
Securities available-for-sale	214,734	212,129
U.S. government agencies
Assets:
Securities available-for-sale	56,703	56,048
States and political subdivisions
Assets:
Securities available-for-sale	233,506	226,128
Corporate bonds
Assets:
Securities available-for-sale	9,762	9,622
Collateralized mortgage obligations
Assets:
Securities available-for-sale	454,106	533,768
Asset-backed Securities
Assets:
Securities available-for-sale	189,753	201,928
Collateralized loan obligations.
Assets:
Securities available-for-sale	174,566	174,746
Fair Value, Inputs, Level 1 [Member]
Assets:
Securities available-for-sale	214,734	212,129
Fair Value, Inputs, Level 2 [Member]
Assets:
Securities available-for-sale	1,225,355	1,291,219
Loans held-for-sale	946	491
Other assets	5,735	6,391
Liabilities:
Other liabilities	10,006	12,264
Fair Value, Inputs, Level 3 [Member]
Assets:
Securities available-for-sale	14,979	36,011
Mortgage servicing rights	10,784	11,189
Fair Value, Measurements, Recurring [Member]
Assets:
Loans held-for-sale	946	491
Mortgage servicing rights	10,784	11,189
Total financial assets	1,472,711	1,557,631
Liabilities:
Total	10,007	12,265
Fair Value, Measurements, Recurring [Member] | Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	5,885	6,516
Liabilities:
Other liabilities	10,007	12,265
Fair Value, Measurements, Recurring [Member] | Forward Contracts [Member]
Assets:
Other assets	28	76
Fair Value, Measurements, Recurring [Member] | U.S. Treasury
Assets:
Securities available-for-sale	214,734	212,129
Fair Value, Measurements, Recurring [Member] | U.S. government agencies
Assets:
Securities available-for-sale	56,703	56,048
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities, Issued by US Government Agencies
Assets:
Securities available-for-sale	121,938	124,990
Fair Value, Measurements, Recurring [Member] | States and political subdivisions
Assets:
Securities available-for-sale	233,506	226,128
Fair Value, Measurements, Recurring [Member] | Corporate bonds
Assets:
Securities available-for-sale	9,762	9,622
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations
Assets:
Securities available-for-sale	454,106	533,768
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities
Assets:
Securities available-for-sale	189,753	201,928
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations.
Assets:
Securities available-for-sale	174,566	174,746
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Assets:
Total financial assets	214,734	212,129
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury
Assets:
Securities available-for-sale	214,734	212,129
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Assets:
Loans held-for-sale	946	491
Total financial assets	1,232,214	1,298,302
Liabilities:
Total	10,007	12,265
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate swap agreements, including risk participation agreement
Assets:
Other assets	5,885	6,516
Liabilities:
Other liabilities	10,007	12,265
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Forward Contracts [Member]
Assets:
Other assets	28	76
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. government agencies
Assets:
Securities available-for-sale	56,703	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	121,938	124,990
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and political subdivisions
Assets:
Securities available-for-sale	218,527	211,899
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate bonds
Assets:
Securities available-for-sale	9,762	9,622
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized mortgage obligations
Assets:
Securities available-for-sale	454,106	526,998
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities
Assets:
Securities available-for-sale	189,753	186,916
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized loan obligations.
Assets:
Securities available-for-sale	174,566	174,746
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets:
Mortgage servicing rights	10,784	11,189
Total financial assets	25,763	47,200
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | States and political subdivisions
Assets:
Securities available-for-sale	$ 14,979	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	3 Months Ended
	Mar. 31, 2023	Mar. 31, 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	14,092
Total gains or losses
Included in other comprehensive income	423	(938)
Purchases, issuances, sales, and settlements
Purchases	406	1,076
Settlements	(46)	(364)
Ending balance	14,979	13,833
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	(33)	(33)
Mortgage Servicing Rights [Member]
Changes in Level 3
Beginning balance	11,189	7,097
Purchases, issuances, sales, and settlements
Issuances	120	301
Settlements	(54)	(250)
Ending balance	10,784	10,376
Changes in Level 3 (liabilities)
Included in earnings (or changes in net assets)	$ (471)	$ 3,228

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative and Qualitative Information (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	$ 10,784	$ 11,189
Securities available-for-sale, at fair value	1,455,068	1,539,359
Fair Value, Inputs, Level 3 [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	10,784	11,189
Securities available-for-sale, at fair value	14,979	36,011
Asset-backed Securities
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	189,753	201,928
States and political subdivisions
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	233,506	226,128
Collateralized mortgage obligations
Quantitative information about Level 3 fair value measurements
Securities available-for-sale, at fair value	454,106	533,768
Fair Value, Measurements, Recurring [Member]
Quantitative information about Level 3 fair value measurements
Mortgage servicing rights, fair value	10,784	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	10,784	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	189,753	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	233,506	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	14,979	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	454,106	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
Mortgage servicing rights, 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
Servicing Asset, 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
Servicing Asset, 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
Servicing Asset, 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	$ 10,784	$ 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	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	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
Mortgage servicing rights, fair value	$ 14,979	$ 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	0.028	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	0.048	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
Servicing Asset, Measurement Input	0.044	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
Mortgage servicing rights, 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
Servicing Asset, 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
Servicing Asset, 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
Servicing Asset, 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	0.042	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	0.291	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
Liquidity Premium (as a percent)	0.30%	0.30%
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
Liquidity Premium (as a percent)	0.50%	0.50%
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 ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Assets and liabilities measured at fair value
Valuation allowance	$ 21,400,000
Carrying value of other real estate owned	1,255,000	$ 1,561,000	$ 2,374,000	$ 2,356,000
OREO Valuation allowance	853,000	856,000	$ 1,179,000	$ 1,179,000
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	49,540,000	49,261,000
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Assets and liabilities measured at fair value
Total	48,285,000	47,700,000
Valuation allowance	21,400,000	17,600,000
Increase (decrease) of specific allocations within the provision for loan losses	3,800,000
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member] | Reported Value Measurement [Member]
Assets and liabilities measured at fair value
Total	69,600,000
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member]
Assets and liabilities measured at fair value
Total	1,255,000	1,561,000
Carrying value of other real estate owned	1,300,000	1,600,000
Outstanding balance	2,200,000	2,500,000
OREO Valuation allowance	853,000	856,000
OREO participations	131,000	131,000
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Assets and liabilities measured at fair value
Total	49,540,000	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	48,285,000	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	$ 1,255,000	$ 1,561,000

Fair Values of Financial Inst_3

Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financial assets:
Cash and due from banks	$ 50,860	$ 56,632
Interest earning deposits with financial institutions	52,162	58,545
Securities available-for-sale	1,455,068	1,539,359
FHLBC and FRBC Stock	30,205	20,530
Mortgage servicing rights	10,784	11,189
Financial liabilities:
Noninterest bearing deposits	1,950,144	2,051,702
Other short-term borrowings	315,000	90,000
Junior subordinated debentures	25,773	25,773
Senior notes	44,611	44,585
Reported Value Measurement
Financial assets:
Cash and due from banks	50,860	56,632
Interest earning deposits with financial institutions	52,162	58,545
Securities available-for-sale	1,455,068	1,539,359
FHLBC and FRBC Stock	30,205	20,530
Loans held for sale	946	491
Net loans	4,003,354	3,820,129
Mortgage servicing rights	10,784	11,189
Interest rate swap agreements	5,735	6,391
Interest rate lock commitments and forward contracts	28	76
Interest receivable on securities and loans	24,214	22,661
Financial liabilities:
Noninterest bearing deposits	1,950,144	2,051,702
Interest bearing deposits	2,947,076	3,059,021
Securities sold under repurchase agreements	27,897	32,156
Other short-term borrowings	315,000	90,000
Junior subordinated debentures	25,773	25,773
Subordinated debentures	59,318	59,297
Senior notes	44,611	44,585
Note payable and other borrowings		9,000
Interest rate swap agreements	10,006	12,264
Interest payable on deposits and borrowings	2,029	1,657
Estimate of Fair Value Measurement
Financial assets:
Cash and due from banks	50,860	56,632
Interest earning deposits with financial institutions	52,162	58,545
Securities available-for-sale	1,455,068	1,539,359
FHLBC and FRBC Stock	30,205	20,530
Loans held for sale	946	491
Net loans	3,842,384	3,681,387
Mortgage servicing rights	10,784	11,189
Interest rate swap agreements	5,735	6,391
Interest rate lock commitments and forward contracts	28	76
Interest receivable on securities and loans	24,214	22,661
Financial liabilities:
Noninterest bearing deposits	1,950,144	2,051,702
Interest bearing deposits	2,932,989	3,042,740
Securities sold under repurchase agreements	27,897	32,156
Other short-term borrowings	315,000	90,000
Junior subordinated debentures	19,330	21,907
Subordinated debentures	46,118	52,322
Senior notes	41,011	44,248
Note payable and other borrowings		8,984
Interest rate swap agreements	10,006	12,264
Interest payable on deposits and borrowings	2,029	1,657
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	50,860	56,632
Interest earning deposits with financial institutions	52,162	58,545
Securities available-for-sale	214,734	212,129
Financial liabilities:
Noninterest bearing deposits	1,950,144	2,051,702
Senior notes	41,011	44,248
Fair Value, Inputs, Level 2
Financial assets:
Securities available-for-sale	1,225,355	1,291,219
FHLBC and FRBC Stock	30,205	20,530
Loans held for sale	946	491
Interest rate swap agreements	5,735	6,391
Interest rate lock commitments and forward contracts	28	76
Interest receivable on securities and loans	24,214	22,661
Financial liabilities:
Interest bearing deposits	2,932,989	3,042,740
Securities sold under repurchase agreements	27,897	32,156
Other short-term borrowings	315,000	90,000
Junior subordinated debentures	19,330	21,907
Subordinated debentures	46,118	52,322
Note payable and other borrowings		8,984
Interest rate swap agreements	10,006	12,264
Interest payable on deposits and borrowings	2,029	1,657
Fair Value, Inputs, Level 3
Financial assets:
Securities available-for-sale	14,979	36,011
Net loans	3,842,384	3,681,387
Mortgage servicing rights	$ 10,784	$ 11,189

Derivatives, Hedging Activiti_3

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Fair Value of Derivatives (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($) item
Two financial institutions
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Cash collateral pledged with financial institutions, dollars	$ 8,100,000	$ 11,200,000
Number of correspondent financial institutions where investment securities are pledged | item		2
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	2,800,000	$ 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	$ 1,824,000	$ 2,737,000
Derivative liabilities designated as hedging instruments, fair value	6,095,000	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	1,824,000
Derivative liabilities designated as hedging instruments, fair value	6,095,000	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	4,089,000
Derivative liabilities designated as hedging instruments, fair value	3,912,000
Not Designated as Hedging Instrument | Interest Rate Products
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 108,200,000	$ 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	19	21
Notional amount	$ 108,150,000	$ 110,647,000
Derivative assets designated as hedging instruments, fair value	3,911,000	3,654,000
Derivative liabilities designated as hedging instruments, fair value	3,911,000	3,654,000
Not Designated as Hedging Instrument | Commitments.
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Notional amount	$ 10,900,000	$ 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	41	4
Notional amount	$ 10,930,000	$ 43,699,000
Derivative assets designated as hedging instruments, fair value	$ 28,000	125,000
Derivative liabilities designated as hedging instruments, fair value		$ 1,000
Not Designated as Hedging Instrument | Interest Rate Lock Commitments and Forward Contracts. | Commercial Loan Customers
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item		28
Notional amount		$ 5,298,000
Derivative assets designated as hedging instruments, fair value		76,000
Not Designated as Hedging Instrument | Other Contracts
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Derivative, number of transactions | item	4
Notional amount	$ 44,097,000
Derivative assets designated as hedging instruments, fair value	150,000	3,855,000
Derivative liabilities designated as hedging instruments, fair value	1,000	$ 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	5,000,000
Interest Expense
Financial Instruments with Off-Balance Sheet Risk and Derivative Transactions
Amount to be reclassified as an decrease to interest expense during the next twelve months	$ 511,000

Derivatives, Hedging Activiti_4

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Effect of Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk
Amount of loss recognized in OCI on derivative	$ 3,100	$ (1,900)
Amount of Gain or (Loss) Recognized in Income on Derivative	$ 1,000	$ 16,000

Derivatives, Hedging Activiti_5

Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Commitments (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Company's contractual commitments due to letters of credit
Total letters of credit	$ 32,625,000	$ 36,096,000
Allowance for credit loss on unfunded commitments	3,200,000
Allowance for credit loss unfunded commitment, purchase accounting adjustment	596,000
Decrease In allowance for credit loss on unfunded commitments	1,400,000
Commercial unfunded commitments assumptions for decrease in the allowance for credit losses	1,200,000
Accretion of interest income for decrease in the allowance for credit losses	224,000
Fixed [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	5,369,000	6,675,000
Variable [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	27,256,000	29,421,000
Commitments to Extend Credit to Borrowers [Member]
Company's contractual commitments due to letters of credit
Total letters of credit	32,558,000	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	5,369,000	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	27,189,000	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	18,846,000	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	3,456,000	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	15,390,000	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	13,712,000	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	1,913,000	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	11,799,000	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
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
Unused lines of Credit [Member]
Company's contractual commitments due to letters of credit
Loan commitments	939,522,000	999,325,000
Unused lines of Credit [Member] | Fixed [Member]
Company's contractual commitments due to letters of credit
Loan commitments	138,829,000	139,070,000
Unused lines of Credit [Member] | Variable [Member]
Company's contractual commitments due to letters of credit
Loan commitments	$ 800,693,000	$ 860,255,000