Stock-Based Compensation - Employee Stock Purchase Plan (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
May 25, 2022 |
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| Stock Option Disclosures | ||||
| Shares authorized for issuance (in shares) | 8,000,000 | |||
| Employee Stock | ||||
| Stock Option Disclosures | ||||
| Weighted average grant date fair value (in dollars per share) | $ 2.87 | $ 5.18 | $ 5.24 | |
| 2017 ESPP | ||||
| Stock Option Disclosures | ||||
| Discount from market value on common stock | 15.00% | |||
| Offering period | 6 months | |||
| Maximum amount available to participants per year | $ 25 | |||
| Shares authorized for issuance (in shares) | 600,000 | |||
| Shares available (in shares) | 69,155 | |||
| 2017 ESPP | Employee Stock | ||||
| Stock Option Disclosures | ||||
| Total stock-based compensation expense | $ 844 | $ 401 | $ 493 | |
| Shares authorized for issuance (in shares) | 3,000 | |||
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- Definition Employee Stock Purchase Plan, Discount from Market Value on Common Stock No definition available.
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- Definition Employee Stock Purchase Plan, Maximum Amount Available to Participants Per Year No definition available.
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- Definition Employee Stock Purchase Plan, Offering Period No definition available.
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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