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Revenue - Contract Assets and Deferred Revenue Schedule (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Capitalized Contract Cost [Line Items] |  |  |
Contract assets | [1] | $ 9,800 | $ 13,969
Prepaid Expenses and Other Current Assets [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Contract assets |  | 9,800 | 13,969
Other Noncurrent Liabilities [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Deferred revenue |  | $ 63,533 | $ 43,450
[1] | Contract assets reflect the satisfied performance obligations for which the Company does not yet have an unconditional right to consideration.

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