Warrants (Details) - Warrants to purchase Common stock expiring between June 10, 2020 to July 9, 2020 - $ / shares shares in Thousands	Jun. 30, 2020	Dec. 31, 2019
Warrants
Warrants (in shares)	39	39
Weighted-average exercise price per share (in usd per share)	$ 5.88

Exercise price per share or per unit of warrants or rights outstanding.

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

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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.

+ References

No definition available.

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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

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- Details

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