Investments - Securities in Unrealized Loss Position (Details)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
U.S. treasury securities
Fair value, less than 12 months	$ 10,165,938	$ 7,454,204
Fair value, 12 months or longer	0	0
Gross unrealized losses, less than 12 months	205,989	63,697
Gross unrealized losses, 12 months or longer	$ 0	$ 0
Number of securities in unrealized loss positions for less than 12 months	8	6
Number of securities in unrealized loss positions for 12 months or longer	0	0
Corporate securities
Fair value, less than 12 months	$ 30,145,410	$ 20,335,512
Fair value, 12 months or longer	0	0
Gross unrealized losses, less than 12 months	922,530	130,787
Gross unrealized losses, 12 months or longer	$ 0	$ 0
Number of securities in unrealized loss positions for less than 12 months	41	26
Number of securities in unrealized loss positions for 12 months or longer	0	0
Agency mortgage-backed securities
Fair value, less than 12 months	$ 21,929,549
Fair value, 12 months or longer	0
Gross unrealized losses, less than 12 months	623,777
Gross unrealized losses, 12 months or longer	$ 0
Number of securities in unrealized loss positions for less than 12 months	18
Number of securities in unrealized loss positions for 12 months or longer	0
Total fixed maturities
Fair value, less than 12 months	$ 62,240,897	$ 49,527,305
Fair value, 12 months or longer	0	0
Gross unrealized losses, less than 12 months	1,752,296	346,891
Gross unrealized losses, 12 months or longer	$ 0	$ 0
Number of securities in unrealized loss positions for less than 12 months	67	49
Number of securities in unrealized loss positions for 12 months or longer	0	0
Agency mortgage backed securities
Fair value, less than 12 months		$ 21,737,589
Fair value, 12 months or longer		0
Gross unrealized losses, less than 12 months		152,407
Gross unrealized losses, 12 months or longer		$ 0
Number of securities in unrealized loss positions for less than 12 months		17
Number of securities in unrealized loss positions for 12 months or longer		0