Investments - Fixed Maturities by Categories (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Gross unrealized appreciation of fixed maturities	$ 14,205	$ 3,188
Gross unrealized (depreciation) of fixed maturities	(2,122)	(44,624)
Certificates of deposit
Amortized cost	61,280,000	58,127,000
Gross unrealized appreciation of fixed maturities	0	0
Gross unrealized (depreciation) of fixed maturities	0	0
Estimated fair value	61,280,000	58,127,000
U.S. treasury securities
Amortized cost	19,091,842	24,075,727
Gross unrealized appreciation of fixed maturities	14,205	3,188
Gross unrealized (depreciation) of fixed maturities	(2,122)	(44,624)
Estimated fair value	19,103,925	24,034,291
Total fixed maturities
Amortized cost	80,371,842	82,202,727
Gross unrealized appreciation of fixed maturities	14,205	3,188
Gross unrealized (depreciation) of fixed maturities	(2,122)	(44,624)
Estimated fair value	$ 80,383,925	$ 82,161,291