Related Party Transactions - Overview of Related Parties (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Related Party Transactions
Board fees paid in stock in lieu of director board and committee fees	$ 0.1	$ 0.1
Common stock issued in lieu of board fees	149,757	68,699
Pillar Investment Entities
Related Party Transactions
Ownership percentage of new company	19.99%
Pillar Investment Entities
Related Party Transactions
Equity method investment beneficial ownership percentage	16.00%
Exercise price of warrants	$ 0.01	$ 0.01
Issuance of common stock upon exercise of warrants (in shares)	1,533,159	3,158,386
Cashless shares		19,052
Pillar Investment Entities \| Maximum
Related Party Transactions
Proceeds from exercise of warrants	$ 0.1	$ 0.1
Pillar Investment Entities \| Warrant, Tranche One
Related Party Transactions
Number of Shares	3,039,514
Exercise price of warrants	$ 2.28
Pillar Investment Entities \| Warrant, Tranche Two
Related Party Transactions
Number of Shares	2,764,227
Exercise price of warrants	$ 2.58
Pillar Investment Entities \| Warrant, Tranche Three
Related Party Transactions
Number of Shares	1,373,626
Exercise price of warrants	$ 2.71

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Percentage of beneficial ownership under equity method investment.

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The number of cashless shares.

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Number of warrants (or share units) exercised during the current period.

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The value of board fees paid in stock in lieu of director board and committee fees.

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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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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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.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

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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.

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