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Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Nov. 03, 2020 | Jul. 15, 2019
Class of Warrant or Right [Line Items] |  |  |  |
Warrants issued (in shares) |  |  |  | 2,000,000
Warrant exercise price (in dollars per share) |  |  |  | $ 0.001
Exercise of warrants (in shares) | 0 | 0 |  |
Senior Secured Notes Due 2025 - First Additional Offering |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Warrant exercise price (in dollars per share) | $ 0.001 |  |  |
Fair value of warrants | $ 6,800 |  |  |
Change in fair value of warrant | $ 735 |  |  |
Senior Secured Notes Due 2025 - First Additional Offering | Maximum |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Warrants issued (in shares) | 2,143,000 |  |  |
Senior Secured Notes Due 2025 |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |
Warrants issued (in shares) |  |  | 714,000 |
Interest rate | 12.50% |  |  |

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- Definition Amount of increase in additional paid in capital (APIC) resulting from the issuance of fair value of warrants. Includes allocation of proceeds of debt securities issued with detachable stock purchase warrants. + References No definition available. + Details
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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Fair value portion of warrants not settleable in cash classified as equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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