Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Warrant derivative liabilities	$ (17,393)	$ (369)
Level 1 [Member]
Warrant derivative liabilities
Level 2 [Member]
Warrant derivative liabilities
Level 3 [Member]
Warrant derivative liabilities	$ 19,062	$ 2,775