Revenue Recognition - Schedule of Significant Changes in Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Contractors [Abstract]
Contract assets	$ 0	$ 0
Change in Contract Asset	$ 0
Percent Change in Contract Asset	0.00%
Contract liabilities	$ (7,765)	(10,208)
Change in Contract Liability	$ 2,443
Percent Change in Contract Liability	2390.00%
Net contract assets (liabilities)	$ (7,765)	$ (10,208)
Change in Net Contract Assets (Liabilities)	$ 2,443
Percent Change in Net Contract Assets (Liabilities)	2390.00%