Contract Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue Recognition [Abstract]
Contract with Customer, Asset, after Allowance for Credit Loss - Balance at beginning of period	$ 5,650	$ 1,794	$ 3,395	$ 554
Revenue recognized in excess of amounts invoiced	1,146	628	3,401	1,868
Contract with Customer, Asset, after Allowance for Credit Loss - Balance at end of period	$ 6,796	$ 2,422	$ 6,796	$ 2,422