Short-term Investments (Tables)

12 Months Ended

Dec. 31, 2018

Investments Debt And Equity Securities [Abstract]

Schedule of Company’s Short-Term Investments

The following table summarizes the Company’s short-term investments accounted for as available-for-sale securities as of December 31, 2018:

	Maturity	Amortized		Unrealized		Unrealized		Estimated
	(in years)	Cost		Losses		Gains		Fair Value
December 31, 2018
U.S. treasury securities	1 or less	$	29,818,479	$	-	$	2,671	$	29,821,150
Agency securities	>1 and <5		5,655,992		-		2,608		5,658,600
Certificates of deposit	>1 and <5		1,925,000		-		-		1,925,000
Total		$	37,399,471	$	-	$	5,279	$	37,404,750