Revenue

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Revenue

Revenue

Contract Balances

The following table summarizes the opening and closing balances of the Company's accounts receivable, net; contract asset, current; contract asset, non-current; deferred revenue, current; and deferred revenue, non-current (in thousands):

	Accounts receivable, net		Contract asset, current			Contract asset, non-current		Deferred revenue, current		Deferred revenue, non-current
Beginning balances as of January 1, 2019	$	630,119	$	9,778		$	16,396	$	73,142	$	46,641
Closing balances as of June 30, 2019	752,680		9,346			18,883		77,026		46,517
Increase/(decrease)	$	122,561	$	(432	)	$	2,487	$	3,884	$	(124	)

The difference between the opening and closing balances of the Company's accounts receivable, net, contract assets and deferred revenues primarily results from revenue growth and the timing difference between the satisfaction of the Company's performance obligation and the customer's payment. The amounts of revenue recognized during the six months ended June 30, 2019 from the opening deferred revenue balance as of January 1, 2019 was $62.6 million.

Remaining performance obligations

As of June 30, 2019, approximately $7.6 billion of total revenues and deferred installation revenues are expected to be recognized in future periods, the majority of which will be recognized over the next 24 months. While initial contract terms vary in length, substantially all contracts thereafter automatically renew in one-year increments. Included in the remaining performance obligations is either 1) remaining performance obligations under the initial contract terms or 2) remaining performance obligations related to contracts in the renewal period once the initial terms have lapsed. The remaining performance obligations do not include variable consideration related to unsatisfied performance obligations such as the usage of metered power or any contracts that could be terminated without any significant penalties such as the majority of interconnection revenues. The remaining performance obligations above include revenues to be recognized in the future related to arrangements where the Company is considered the lessor.