Description of Business and Summary of Significant Accounting Policies - Concentrations (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item
Cash and Cash Equivalents
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash in bank \| $	$ 148.0	$ 262.4
Accounts Receivable \| Customer Concentration Risk
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reinsurers \| item	2	5
Accounts Receivable \| Customer Concentration Risk \| Top Reinsurers
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk, Percentage	45.00%	68.00%
Revenue Benchmark \| Geographic Concentration Risk \| Customers in Texas
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk, Percentage	52.00%	61.00%
Revenue Benchmark \| Geographic Concentration Risk \| Customers in South Carolina
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Concentration Risk, Percentage	10.00%	9.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
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-URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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