Accrued Issuable Equity - Other Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Aug. 31, 2018
Accrued Issuable Equity [Abstract]
Treasury shares of common stock	31,941
Accrued issuable equity	$ 10	$ 74	$ 128
Gain on change in fair value of accrued issuable equity	$ 64	$ 54