Investments - Unrealized appreciation on investments (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Notes to Financial Statements
Gross unrealized appreciation of fixed maturities	$ 3,188	$ 14,476
Gross unrealized (depreciation) of fixed maturities	(44,624)	(9,031)
Net unrealized appreciation (depreciation) on investments	(41,436)	5,445
Deferred federal tax expense	14,088	(1,851)
Net unrealized appreciation (depreciation), net of deferred income taxes	$ (27,348)	$ 3,594