Investments - Securities in Unrealized Loss Position (Details)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
U.S. treasury securities
Fair value, less than 12 months	$ 0	$ 1,760,491
Fair value, 12 months or longer	9,842,591	8,496,069
Gross unrealized losses, less than 12 months	0	20,181
Gross unrealized losses, 12 months or longer	$ 73,903	$ 123,101
Number of securities in unrealized loss positions for less than 12 months	0	2
Number of securities in unrealized loss positions for 12 months or longer	7	6
Corporate securities
Fair value, less than 12 months	$ 0	$ 10,878,381
Fair value, 12 months or longer	25,079,280	21,189,487
Gross unrealized losses, less than 12 months	0	272,515
Gross unrealized losses, 12 months or longer	$ 187,933	$ 578,609
Number of securities in unrealized loss positions for less than 12 months	0	17
Number of securities in unrealized loss positions for 12 months or longer	32	27
Agency mortgage backed securities
Fair value, less than 12 months	$ 0	$ 0
Fair value, 12 months or longer	16,518,741	17,034,086
Gross unrealized losses, less than 12 months	0	0
Gross unrealized losses, 12 months or longer	$ 245,482	$ 472,293
Number of securities in unrealized loss positions for less than 12 months	0	0
Number of securities in unrealized loss positions for 12 months or longer	15	15
Total fixed maturities
Fair value, less than 12 months	$ 0	$ 12,638,872
Fair value, 12 months or longer	51,737,612	46,719,642
Gross unrealized losses, less than 12 months	0	292,696
Gross unrealized losses, 12 months or longer	$ 507,318	$ 1,174,003
Number of securities in unrealized loss positions for less than 12 months	0	19
Number of securities in unrealized loss positions for 12 months or longer	54	48