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Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2021
Accounting Policies [Abstract] |
Schedule of Assets and Liabilities Measured at Fair Value | Our liabilities measured at fair value were as follows:
| September 30, 2021 |  | December 31, 2020
| Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value |  | Level 1 |  | Level 2 |  | Level 3 |  | Total Fair Value
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt (a) | — |  |  | $ | 9,132 |  |  | — |  |  | $ | 9,132 |  |  | — |  |  | $ | 9,011 |  |  | — |  |  | $ | 9,011 |
(a)The fair value for non-publicly traded debt is based upon estimates from a market maker and brokerage firm. Refer to Note 13 for information related to the carrying value of our debt as of September 30, 2021 and December 31, 2020.

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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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