Fair Value Measurement - Change In Fair Value Measurement (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Balance at December 31, 2019	$ 16,055,937	$ 16,055,937
Other than temporary investements on bond portfolio	(35,000)	(35,000)
Purchases		1,721,000
Proceeds		(122,000)
Balance at June 30, 2020	$ 17,619,937	$ 17,619,937