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Selected Balance Sheet Data | 12 Months Ended
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Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Selected Balance Sheet Data | Selected Balance Sheet Data Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets for the years ended December 31, 2021 and 2020 consisted of the following (in thousands):
|  | December 31, 2021 |  | December 31, 2020
Prepaid inventories |  | $ | 7,303 |  |  | $ | 8 |
Prepaid insurance |  | 4,996 |  |  | 48 |
Deposits (primarily deposits relating to equipment purchases) |  | 2,783 |  |  | — |
Assets held for sale |  | 1,848 |  |  | — |
Prepaid licenses and subscriptions |  | 801 |  |  | — |
Other |  | 119 |  |  | — |
Total |  | $ | 17,850 |  |  | $ | 56 |
Other Current Liabilities Other current liabilities for the years ended December 31, 2021 and 2020 consisted of the following (in thousands):
|  | December 31, 2021 |  | December 31, 2020
Accrued expenses(1) |  | $ | 3,997 |  |  | $ | 1,837 |
Customer deposits |  | 899 |  |  | 731 |
Warranty liability |  | 177 |  |  | — |
Accrued interest |  | — |  |  | 2,453 |
Other |  | 306 |  |  | 121 |
Total |  | $ | 5,379 |  |  | $ | 5,142 |
____________ (1) Primarily relates to personnel costs — wages, health benefits, vacation and other accruals.

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
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