Stockholders' Equity (Deficit) - Schedule of Performance Stock Units (Details) - Performance Shares Unit [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		6 Months Ended
		Jun. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Beginning balance, number of shares	[1]	2,404
Forfeited, number of shares	[1]	(27)
Ending balance, number of shares	[1]	2,377
Beginning balance, weighted average grant date fair value		$ 1.08
Forfeited, weighted average grant date fair value		1.07
Ending balance, weighted average grant date fair value		$ 1.08
Aggregate intrinsic value		$ 2,829	$ 2,909

[1] The number of PSUs represents the base number of PSUs that may vest.  The actual number of PSUs that will vest will be between zero and two times the base number of PSUs depending on the Company’s achievement of break-even quarterly EBITDA.