Consolidated Financial Statements	3 Months Ended
Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Consolidated Financial Statements	(1) Consolidated Financial Statements Nature of Operations and Principles of Consolidation: Civista Bancshares, Inc. ("CBI") is an Ohio corporation and a registered financial holding company. The Consolidated Financial Statements include the accounts of CBI and its wholly-owned direct and indirect subsidiaries: Civista Bank ("Civista"), First Citizens Insurance Agency, Inc. ("FCIA"), Water Street Properties, Inc. ("WSP"), CIVB Risk Management, Inc. ("CRMI") and First Citizens Investments, Inc. ("FCI"). The above companies together are sometimes referred to as the "Company". Intercompany balances and transactions are eliminated in consolidation. Management considers the Company to operate primarily in one reportable segment, banking. Civista provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Cuyahoga, Franklin, Logan, Summit, Huron, Ottawa, Madison, Montgomery, Henry, Wood, and Richland, in the Indiana counties of Dearborn and Ripley, and in the Kentucky county of Kenton. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. There are no significant concentrations of loans to any one industry or customer. However, our customers’ ability to repay their loans is dependent on the real estate and general economic conditions in the area. Other financial instruments that potentially represent concentrations of credit risk include deposit accounts in other financial institutions. Civista Leasing and Finance ("CLF"), formerly known as Vision Financial Group, Inc. ("VFG"), was acquired in the fourth quarter of 2022 as a wholly-owned subsidiary of Civista. As of August 31, 2023, VFG was merged into Civista and now operates as a full-service equipment leasing and financing division of Civista. The operations of CLF are headquartered in Pittsburgh, Pennsylvania. FCIA is wholly-owned by CBI and was formed to allow CBI and its subsidiaries to participate in commission revenue generated through CBI's third-party insurance agreement. FCIA revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. WSP is wholly-owned by CBI and was formed to hold properties repossessed by CBI subsidiaries. WSP revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. CRMI is a captive insurance company that is wholly-owned by CBI and was formed in 2017 to provide property and casualty insurance coverage to CBI and its subsidiaries for which insurance may not be currently available or economically feasible in the insurance marketplace. CRMI revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. FCI is wholly-owned by Civista and holds and manages its securities portfolio. The operations of FCI are located in Wilmington, Delaware. The accompanying Unaudited Consolidated Financial Statements have been prepared by the Company without audit. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the Company’s financial position as of March 31, 2025 and its results of operations and changes in cash flows for the periods ended March 31, 2025 and 2024 have been made. The results of operations for the three-month periods ended March 31, 2025 are not necessarily indicative of the operating results for the full year. Reference is made to the accounting policies of the Company described in the notes to the audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024. The Company has consistently followed these policies in preparing this Quarterly Report on Form 10-Q.

Nature of Operations and Principles of Consolidation: Civista Bancshares, Inc. ("CBI") is an Ohio corporation and a registered financial holding company. The Consolidated Financial Statements include the accounts of CBI and its wholly-owned direct and indirect subsidiaries: Civista Bank ("Civista"), First Citizens Insurance Agency, Inc. ("FCIA"), Water Street Properties, Inc. ("WSP"), CIVB Risk Management, Inc. ("CRMI") and First Citizens Investments, Inc. ("FCI"). The above companies together are sometimes referred to as the "Company". Intercompany balances and transactions are eliminated in consolidation. Management considers the Company to operate primarily in one reportable segment, banking.

Civista provides financial services through its offices in the Ohio counties of Erie, Crawford, Champaign, Cuyahoga, Franklin, Logan, Summit, Huron, Ottawa, Madison, Montgomery, Henry, Wood, and Richland, in the Indiana counties of Dearborn and Ripley, and in the Kentucky county of Kenton. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are residential mortgage, commercial, and installment loans. Substantially all loans are secured by specific items of collateral including business assets, consumer assets and commercial and residential real estate. Commercial loans are expected to be repaid from cash flow from operations of businesses. There are no significant concentrations of loans to any one industry or customer. However, our customers’ ability to repay their loans is dependent on the real estate and general economic conditions in the area. Other financial instruments that potentially represent concentrations of credit risk include deposit accounts in other financial institutions.

Civista Leasing and Finance ("CLF"), formerly known as Vision Financial Group, Inc. ("VFG"), was acquired in the fourth quarter of 2022 as a wholly-owned subsidiary of Civista. As of August 31, 2023, VFG was merged into Civista and now operates as a full-service equipment leasing and financing division of Civista. The operations of CLF are headquartered in Pittsburgh, Pennsylvania.

FCIA is wholly-owned by CBI and was formed to allow CBI and its subsidiaries to participate in commission revenue generated through CBI's third-party insurance agreement. FCIA revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. WSP is wholly-owned by CBI and was formed to hold properties repossessed by CBI subsidiaries. WSP revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. CRMI is a captive insurance company that is wholly-owned by CBI and was formed in 2017 to provide property and casualty insurance coverage to CBI and its subsidiaries for which insurance may not be currently available or economically feasible in the insurance marketplace. CRMI revenue was less than 1% of total revenue for each of the quarters ended March 31, 2025 and 2024. FCI is wholly-owned by Civista and holds and manages its securities portfolio. The operations of FCI are located in Wilmington, Delaware.

The accompanying Unaudited Consolidated Financial Statements have been prepared by the Company without audit. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to present fairly the Company’s financial position as of March 31, 2025 and its results of operations and changes in cash flows for the periods ended March 31, 2025 and 2024 have been made. The results of operations for the three-month periods ended March 31, 2025 are not necessarily indicative of the operating results for the full year. Reference is made to the accounting policies of the Company described in the notes to the audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024. The Company has consistently followed these policies in preparing this Quarterly Report on Form 10-Q.