Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Opening and Closing Balances of the Company's Contract Assets and Deferred Revenue

The opening and closing balances of the Company’s contract assets, net of allowance for credit losses, and deferred revenue are as follows:

	Contract Assets, Current Portion(1)		Contract Assets(2)		Deferred Revenue, Current Portion(3)		Deferred Revenue(4)
	(in thousands)
December 31, 2020	$	—	$	3,997	$	14,870	$	23,862
June 30, 2021	187		4,183		14,273		25,880
Change	$	187	$	186	$	(597)	$	2,018

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(1)Amounts are included within other current assets on the Company’s consolidated balance sheets.

(2)Amounts are included within other assets on the Company’s consolidated balance sheets.

(3)Amounts include $1.2 million and $1.7 million of deferred revenue related to leases as of June 30, 2021 and December 31, 2020, respectively.

(4)Amounts include $3.1 million and $2.7 million of deferred revenue related to leases as of June 30, 2021 and December 31, 2020, respectively.

Fair Value Measurements

Information about the Company’s financial assets and liabilities measured at fair value on a recurring basis is presented below:

		June 30, 2021
	Balance Sheet Classification	Carrying Value		Level 1		Level 2		Level 3
		(in thousands)
Assets:
Cash equivalents	Cash and cash equivalents	$	49,214	$	49,214	$	—	$	—
Liabilities:
Power swaps	Swap liability, current portion	$	2,159	$	—	$	2,159	$	—
Interest rate swaps	Swap liability, current portion	$	9,345	$	—	$	9,345	$	—
Interest rate swaps	Other long-term liabilities	$	13,438	$	—	$	13,438	$	—

		December 31, 2020
	Balance Sheet Classification	Carrying Value		Level 1		Level 2		Level 3
		(in thousands)
Assets:
Cash equivalents	Cash and cash equivalents	$	60,664	$	60,664	$	—	$	—
Liabilities:
Interest rate swaps	Swap liability, current portion	$	9,418	$	—	$	9,418	$	—
Interest rate swaps	Other long-term liabilities	$	20,523	$	—	$	20,523	$	—