Series A Redeemable Convertible Preferred Stock - Reconciliation of Net Loss Attributable to Common Stockholders (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Equity [Abstract]
Net income (loss)	$ (124,907)	$ 506,877
Less: Accrual of Series A redeemable convertible preferred stock dividends	247,027	243,167
Less: Deemed dividend on Series A redeemable convertible preferred stock	0	2,269,042
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	129,239	38,105
Net loss attributable to common stockholders	$ (501,173)	$ (2,043,437)