Employee Benefit Plan - Rollforward of restricted stock activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Number of Shares
Balance at the beginning	1,000,000	0
Granted	345,000	2,000,000
Vested	950,967	1,000,000
Forfeited	333,337	0
Balance at the end	60,696	1,000,000
Weighted-average Grant Date Fair Value
Balance at the beginning (in dollars per share)	$ 3.00
Granted (in dollars per share)	2.56	$ 3.00
Vested (in dollars per share)	3.03	3.00
Forfeited (in dollars per share)	2.28
Balance at the end (in dollars per share)	$ 3.92	$ 3.00