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Stock-Based Compensation (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 30, 2020 | Feb. 29, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
RSA |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Retainer fee, percentage |  | 50.00% |  |  |  |
Outstanding vested (in shares) |  | 34,706 |  |  |  |
Vesting period |  | 1 year |  |  |  |
Compensation costs |  |  | $ 0 | $ 38,000 | $ 17,000 | $ 57,000
Compensation cost expected to be recognized |  |  | 0 |  | $ 0 |
RSA | 2019 Long Term Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares granted (in shares) | 61,308 |  |  |  |  |
RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares granted (in shares) |  |  |  |  | 0 |
Compensation costs |  |  | 120,000 |  | $ 265,000 | $ 101,000
Compensation cost expected to be recognized |  |  | $ 700,000 |  | $ 700,000 |
Forfeitures (in shares) |  |  |  |  | 1,835 |
Weighted-average grant date fair value (in dollars per share) |  |  |  |  | $ 1.75 |
Outstanding RSUs (in shares) |  |  |  |  | 675,381 |
Unrecognized compensation costs, weighted average period |  |  |  |  | 2 years |
RSUs | 2019 Long Term Incentive Plan |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Outstanding vested (in shares) |  |  |  |  | 101,284 |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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