Statutory Accounting and Regulation - Schedule of Statutory Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
United Property & Casualty Insurance Company
Statutory Accounting Practices
Statutory net income	$ (5,940)	$ (8,152)	$ (11,979)	$ (9,324)
Family Security Insurance Company
Statutory Accounting Practices
Statutory net income	(2,200)	87	737	183
Interboro Insurance Company
Statutory Accounting Practices
Statutory net income	1,939	$ 5,837	4,018	$ 8,187
American Coastal Insurance Company
Statutory Accounting Practices
Statutory net income	$ 5,694		$ 11,814