Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other prepaid expenses	$ 548	$ 292
Other current assets	209	0
Prepaid software licenses	208	0
Prepaid insurance	0	255
Prepaid expenses and other current assets	$ 965	$ 547