Stockholders' Equity - Series D Convertible Preferred Stock (Details) - USD ($)			1 Months Ended
	May 08, 2020	Jan. 25, 2019	Jun. 30, 2020	Apr. 30, 2019	Jun. 15, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Number of shares called by warrants (in shares)					2,213,115
Exercise price of warrants (in USD per share)					$ 3.05
Shares issued upon conversion (in shares)			1,546,700	333,333
Service receivable		$ 1,675,000	$ 2,765,164			$ 971,673
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance	$ 2,700,000
Series D Convertible Preferred Stock
Class of Stock [Line Items]
Shares converted (in shares)			154,670
Service receivable	2,300,000
Deemed dividend recognized for beneficial conversion features of Convertible Preferred Stock issuance	600,000
Private Placement
Class of Stock [Line Items]
Amount financed under agreement	$ 2,300,000	$ 1,675,000
Number of shares called by warrants (in shares)	859,813
Exercise price of warrants (in USD per share)	$ 1.50	$ 3.762
Private Placement | Common Stock
Class of Stock [Line Items]
Shares of common stock issued (in shares)	602,833	183,334
Private Placement | Series D Convertible Preferred Stock
Class of Stock [Line Items]
Shares of common stock issued (in shares)	154,670