Statutory Accounting and Regulation - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statutory Accounting Practices
Statutory Accounting Practices, Statutory Capital and Surplus, Balance	$ 415,948,000	$ 437,449,000
Statutory Accounting Practices, Statutory Net Income Amount	(38,507,000)	(5,199,000)	$ 832,000
UPC, Subsidiary
Statutory Accounting Practices
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	156,673,000
American Coastal Insurance Company
Statutory Accounting Practices
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	150,699,000
Family Security Holdings (FSH)
Statutory Accounting Practices
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	20,916,000
Interboro Insurance Company
Statutory Accounting Practices
Statutory Accounting Practices, Dividends Refunded with Approval of Regulatory Agency		$ 1,764,000
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	51,394,000
Journey [Member]
Statutory Accounting Practices
Amount of Restricted Net Assets for Consolidated and Unconsolidated Subsidiaries	$ 61,148,000