Nature of Operations	12 Months Ended
Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Note 1 -- Nature of Operations HCI Group, Inc., together with its subsidiaries (“HCI” or the “Company”), is primarily engaged in the property and casualty insurance business through two Florida domiciled insurance companies, Homeowners Choice Property & Casualty Insurance Company, Inc. (“HCPCI”) and TypTap Insurance Company (“TypTap”). Both HCPCI and TypTap are authorized to underwrite various homeowners’ property and casualty insurance products and allied lines business in the state of Florida and in other states. The operations of both insurance subsidiaries are supported by HCI Group, Inc. and certain HCI subsidiaries. The Company emphasizes the use of internally developed technologies to collect and analyze claims and other supplemental data to generate savings and efficiency for the operations of the insurance subsidiaries. In addition, Greenleaf Capital, LLC, the Company’s real estate subsidiary, is primarily engaged in the businesses of owning and leasing real estate and operating marina facilities. In the first quarter of 2021, the Company reorganized its operations to focus on specific business segments, resulting in the creation of TypTap Insurance Group, Inc. (“TTIG”) with a separate workforce, board of directors and financial reporting structure. Companies under TTIG include TypTap, TypTap Management Company, Exzeo USA, Inc., and Cypress Tech Development Company, Inc., the parent company of an India company, Exzeo Software Private Limited. TTIG and its subsidiaries are known as TypTap Group. In October 2023, the Company incorporated a new subsidiary, Core Risk Managers, LLC (“CRM”), in the state of Florida. Its sole purpose is to conduct daily operations on behalf of Condo Owners Reciprocal Exchange (“CORE”) under an attorney-in-fact agreement. CORE, a reciprocal insurance exchange, was organized in November 2023 to offer commercial residential multiple peril insurance products. See Note 16 -- “Variable Interest Entity” for additional information. With the addition of CORE, the Company now conducts its operations through five reportable segments: 1) HCPCI insurance operations, 2) TypTap Group, 3) CORE insurance operations, 4) real estate operations, and 5) corporate and other. See Note 17 -- “Segment Information” for additional information. Assumed Business Northeast Region Effective December 31, 2020, the Company, through HCPCI, began providing 69.5% quota share reinsurance on all in-force, new and renewal policies issued by United Property & Casualty Insurance Company, an insurance subsidiary of United Insurance Holdings Corporation (“United”), in the states of Connecticut, New Jersey, Massachusetts, and Rhode Island (collectively “Northeast Region”) through May 31, 2021. The Company also entered into a renewal rights agreement with United in connection with the Northeast Region assumed business, under which the Company had the right to renew and/or replace United’s insurance policies at the end of their respective policy periods. The policy replacement date was set for June 1, 2021 or such other date as mutually agreed by both parties. In return, United received 100,000 shares of HCI’s common stock and a renewal rights ceding commission of 6% on any replacement premium in excess of $80,000. The aggregate ceding commission amount did not exceed $3,100. Effective June 1, 2021, the Company, through HCPCI and TypTap, began providing 100% quota share reinsurance on all of United’s in-force, new and renewal policies in the Northeast Region through May 31, 2022. Under this agreement, each insurance subsidiary assumed 50% of the business and paid United a ceding commission of 24% of premium. Through its insurance subsidiaries, the Company began renewing and/or replacing United policies in two states in December 2021, a third state in January 2022, and the fourth state in April 2022. Southeast Region In February 2022, HCPCI entered into another reinsurance agreement with United where HCPCI provides 85% quota share reinsurance on all of United’s personal lines insurance business in the states of Georgia, North Carolina, and South Carolina (collectively “Southeast Region”) from December 31, 2021 through May 31, 2022. Under this agreement, HCPCI paid United a catastrophe allowance of 9% of premium and a provisional ceding commission of 25% of premium. The Company also entered into a renewal rights agreement with United in connection with the Southeast Region assumed business. Under the renewal rights agreement, the Company had the right to renew and/or replace United’s insurance policies at the end of their respective policy periods. The policy replacement date was set for June 1, 2022 or such other date as mutually agreed by both parties. As part of the transaction, United received a renewal rights ceding commission of 6%, with a portion of the ceding commission paid up-front. The agreement specified that the aggregate ceding commission amount would not exceed $6,000. The Company, through TypTap, entered into a new quota share reinsurance agreement in June 2022 to provide 100% reinsurance on all of United’s in-force, new and renewal policies in the Southeast Region from June 1, 2022 through May 31, 2023. In exchange, TypTap paid United a ceding commission of 16% of premium. The Company began renewing United’s policies in South Carolina on June 1, 2022. On October 1, 2022, the Company began renewing and/or replacing United’s policies in Georgia. On December 1, 2022, the Company began renewing United’s policies in North Carolina. Citizens Assumption From time to time, the Company may participate in a “take-out program” through which the Company assumes insurance policies held by Citizens Property Insurance Corporation (“Citizens”), a Florida state-supported insurer. The take-out program is a legislatively mandated program designed to reduce the state’s risk exposure by encouraging private companies to assume policies from Citizens. During the fourth quarter of 2023, the Company’s two insurance subsidiaries, HCPCI and TypTap, were approved by the Florida Department of Financial Services, Office of Insurance Regulation (“FLOIR”) to assume a total of 75,000 policies. In December 2023, approximately 60,100 policies were assumed, representing approximately $226,400 in annualized gross written premiums. See Note 30 --“Subsequent Events” for additional information.

Nature of Operations

12 Months Ended

Dec. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1 -- Nature of Operations

HCI Group, Inc., together with its subsidiaries (“HCI” or the “Company”), is primarily engaged in the property and casualty insurance business through two Florida domiciled insurance companies, Homeowners Choice Property & Casualty Insurance Company, Inc. (“HCPCI”) and TypTap Insurance Company (“TypTap”). Both HCPCI and TypTap are authorized to underwrite various homeowners’ property and casualty insurance products and allied lines business in the state of Florida and in other states. The operations of both insurance subsidiaries are supported by HCI Group, Inc. and certain HCI subsidiaries. The Company emphasizes the use of internally developed technologies to collect and analyze claims and other supplemental data to generate savings and efficiency for the operations of the insurance subsidiaries. In addition, Greenleaf Capital, LLC, the Company’s real estate subsidiary, is primarily engaged in the businesses of owning and leasing real estate and operating marina facilities.

In the first quarter of 2021, the Company reorganized its operations to focus on specific business segments, resulting in the creation of TypTap Insurance Group, Inc. (“TTIG”) with a separate workforce, board of directors and financial reporting structure. Companies under TTIG include TypTap, TypTap Management Company, Exzeo USA, Inc., and Cypress Tech Development Company, Inc., the parent company of an India company, Exzeo Software Private Limited. TTIG and its subsidiaries are known as TypTap Group.

In October 2023, the Company incorporated a new subsidiary, Core Risk Managers, LLC (“CRM”), in the state of Florida. Its sole purpose is to conduct daily operations on behalf of Condo Owners Reciprocal Exchange (“CORE”) under an attorney-in-fact agreement. CORE, a reciprocal insurance exchange, was organized in November 2023 to offer commercial residential multiple peril insurance products. See Note 16 -- “Variable Interest Entity” for additional information.

With the addition of CORE, the Company now conducts its operations through five reportable segments: 1) HCPCI insurance operations, 2) TypTap Group, 3) CORE insurance operations, 4) real estate operations, and 5) corporate and other. See Note 17 -- “Segment Information” for additional information.

Assumed Business

Northeast Region

Effective December 31, 2020, the Company, through HCPCI, began providing 69.5% quota share reinsurance on all in-force, new and renewal policies issued by United Property & Casualty Insurance Company, an insurance subsidiary of United Insurance Holdings Corporation (“United”), in the states of Connecticut, New Jersey, Massachusetts, and Rhode Island (collectively “Northeast Region”) through May 31, 2021. The Company also entered into a renewal rights agreement with United in connection with the Northeast Region assumed business, under which the Company had the right to renew and/or replace United’s insurance policies at the end of their respective policy periods. The policy replacement date was set for June 1, 2021 or such other date as mutually agreed by both parties. In return, United received 100,000 shares of HCI’s common stock and a renewal rights ceding commission of 6% on any replacement premium in excess of $80,000. The aggregate ceding commission amount did not exceed $3,100.

Effective June 1, 2021, the Company, through HCPCI and TypTap, began providing 100% quota share reinsurance on all of United’s in-force, new and renewal policies in the Northeast Region through May 31, 2022. Under this agreement, each insurance subsidiary assumed 50% of the business and paid United a ceding commission of 24% of premium. Through its insurance subsidiaries, the Company began renewing and/or replacing United policies in two states in December 2021, a third state in January 2022, and the fourth state in April 2022.

Southeast Region

In February 2022, HCPCI entered into another reinsurance agreement with United where HCPCI provides 85% quota share reinsurance on all of United’s personal lines insurance business in the states of Georgia, North Carolina, and South Carolina (collectively “Southeast Region”) from December 31, 2021 through May 31, 2022. Under this agreement, HCPCI paid United a catastrophe allowance of 9% of premium and a provisional ceding commission of 25% of premium.

The Company also entered into a renewal rights agreement with United in connection with the Southeast Region assumed business. Under the renewal rights agreement, the Company had the right to renew and/or replace United’s insurance policies at the end of their respective policy periods. The policy replacement date was set for June 1, 2022 or such other date as mutually agreed by both

parties. As part of the transaction, United received a renewal rights ceding commission of 6%, with a portion of the ceding commission paid up-front. The agreement specified that the aggregate ceding commission amount would not exceed $6,000.

The Company, through TypTap, entered into a new quota share reinsurance agreement in June 2022 to provide 100% reinsurance on all of United’s in-force, new and renewal policies in the Southeast Region from June 1, 2022 through May 31, 2023. In exchange, TypTap paid United a ceding commission of 16% of premium. The Company began renewing United’s policies in South Carolina on June 1, 2022. On October 1, 2022, the Company began renewing and/or replacing United’s policies in Georgia. On December 1, 2022, the Company began renewing United’s policies in North Carolina.

Citizens Assumption

From time to time, the Company may participate in a “take-out program” through which the Company assumes insurance policies held by Citizens Property Insurance Corporation (“Citizens”), a Florida state-supported insurer. The take-out program is a legislatively mandated program designed to reduce the state’s risk exposure by encouraging private companies to assume policies from Citizens. During the fourth quarter of 2023, the Company’s two insurance subsidiaries, HCPCI and TypTap, were approved by the Florida Department of Financial Services, Office of Insurance Regulation (“FLOIR”) to assume a total of 75,000 policies. In December 2023, approximately 60,100 policies were assumed, representing approximately $226,400 in annualized gross written premiums. See Note 30 --“Subsequent Events” for additional information.