Statutory Accounting and Regulation - Schedule of Affiliates' Surplus Regarding Policyholders (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statutory Accounting Practices
Statutory capital and surplus required	$ 31,765
United Property & Casualty Insurance Company
Statutory Accounting Practices
Statutory capital and surplus required (percent of total liabilities)	10.00%
Statutory capital and surplus balance	$ 130,464	$ 135,288
UPC Re
Statutory Accounting Practices
Statutory capital and surplus balance	7,727	728
Family Security Insurance Company
Statutory Accounting Practices
Statutory capital and surplus balance	15,488	$ 15,572
Interboro Insurance Company
Statutory Accounting Practices
Statutory capital and surplus balance	38,009
Minimum | United Property & Casualty Insurance Company
Statutory Accounting Practices
Statutory capital and surplus required	5,000
Minimum | UPC Re
Statutory Accounting Practices
Statutory capital and surplus required	100
Minimum | Family Security Insurance Company
Statutory Accounting Practices
Statutory capital and surplus required	3,250
Minimum | Interboro Insurance Company
Statutory Accounting Practices
Statutory capital and surplus required	$ 4,700