Other Liabilities - Additional Information (Detail) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities Disclosure [Abstract]
Liabilities related to amounts owed to Citizens for policies	$ 200,000	$ 4,900,000
Other liabilities, commissions payable	6,200	5,800
Accounts and other payable	5,600	3,900
Payments in Connection with issuance of debt	6,900	0
Dividends payable	1,800,000	1,600,000
Unearned revenue	$ 1,000,000	$ 1,200,000