Contract assets and contract liabilities (Tables)

9 Months Ended

Sep. 30, 2020

Contract assets and contract liabilities

Schedule of contract asset, net and contract liability, net balance from customers

	Contract		Contract
	Assets, Net		Liabilities, Net
Balance at December 31, 2019	$	967	$	227,889
Balance at September 30, 2020		760		230,770
Change	$	(207)	$	2,881

Schedule of remaining performance obligations included in revenue

	Three Months Ended		Nine Months Ended
	September 30, 2020		September 30, 2020
Amounts included in the beginning of period contract liability balance	$	19,020	$	65,126
Amounts associated with performance obligations satisfied in previous periods		(100)		(81)