Summary of Significant Accounting Policies - Energy Assets (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Revenue, Major Customer [Line Items] | ||
| Grant proceeds | $ 1,874 | $ 784 |
| United States | ||
| Revenue, Major Customer [Line Items] | ||
| Deferred grant income | $ 8,271 | $ 6,885 |
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- Definition Grant Proceeds No definition available.
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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Details
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