Fair Value Measurement - Additional Information (Details) - $ / shares		6 Months Ended
	Feb. 27, 2019	Dec. 31, 2019
Warrant Expiration Term	5 years 6 months
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 12.20
Percentage of Market Triggering Event	100.00%
Derivative liability - Warrants
Class of Warrant or Right, Outstanding	347,223
Warrant Expiration Term	5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 12.20
Percentage of Probability		0.00%
Derivative liability - Warrants | Maximum [Member]
Percentage of Probability		10.00%
Derivative liability - Warrants | Minimum [Member]
Percentage of Probability		1.00%