Stockholders' Equity (Details) - $ / shares	Jun. 04, 2018	Mar. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Stock shares authorized (in shares)		300,000,000
Preferred stock, shares authorized (in shares)		100,000,000
Common stock, shares issued (in shares)		17,986,121
Common stock, shares outstanding (in shares)		17,841,970
Class A common stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		100,000,000	100,000,000
Common stock, shares issued (in shares)		16,097,836	15,750,097
Common stock, shares outstanding (in shares)		15,953,685	15,681,439
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		100,000,000	100,000,000
Common stock, shares issued (in shares)		1,888,285	1,926,848
Common stock, shares outstanding (in shares)		1,888,285	1,926,848
Series I Warrants
Class of Stock [Line Items]
Number of warrants issued (shares)	3,016,853
Warrants exercise price (USD per share)	$ 0.0000001
Series 2 warrants
Class of Stock [Line Items]
Number of warrants issued (shares)	712,736
Warrants exercise price (USD per share)	$ 0.0000001