Basis of Presentation and Summary of Significant Accounting Policies - Summary of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Contract assets:
Beginning balance	$ 1,484	$ 1,666
Additions	4,125	13,624
Deductions	(4,014)	(13,806)
Ending balance	1,595	1,484
Contract liabilities:
Beginning balance	1,474	1,175
Additions	2,436	5,348
Deductions	(2,414)	(5,049)
Ending balance	$ 1,496	$ 1,474