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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 USD ($) segment | Jan. 01, 2022 USD ($) | Dec. 31, 2020 USD ($)
Property, Plant and Equipment [Line Items] |  |  |
Cash and cash equivalents | $ 20,523 |  | $ 22,076
Number of operating segments | segment | 1 |  |
Number of reportable segments | segment | 1 |  |
Vesting period | 3 years |  |
Accounting Standards Update 2016-02 | Minimum | Subsequent Event |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Operating lease right-of-use assets |  | $ 8,000 |
Operating lease liability |  | 8,000 |
Accounting Standards Update 2016-02 | Maximum | Subsequent Event |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Operating lease right-of-use assets |  | 11,000 |
Operating lease liability |  | $ 11,000 |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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