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Common Stock - Summary of Outstanding Common Stock Warrants (Details) shares in Thousands | 6 Months Ended
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Jun. 30, 2020 $ / shares shares
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 105
Exercise Price $19.55 |
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 14
Exercise Price | $ / shares | $ 19.55
Expiration Date | 2022-12
Exercise Price $9.73 |
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 30
Exercise Price | $ / shares | $ 9.73
Expiration Date | 2021-02
Exercise Price $9.73 |
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 20
Exercise Price | $ / shares | $ 9.73
Expiration Date | 2023-08
Exercise Price $9.73 |
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 20
Exercise Price | $ / shares | $ 9.73
Expiration Date | 2024-03
Exercise Price $9.73 |
Class Of Warrant Or Right [Line Items] |
Warrants Outstanding | 21
Exercise Price | $ / shares | $ 9.73
Expiration Date | 2024-12

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- Definition The expiration, mandatory redemption, or due date, month and year (YYYY-MM), of the financial instrument issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 + Details
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