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Stock-Based Compensation - Outstanding RSU's under the 2016 Plan (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2021 | Jan. 31, 2020 | Oct. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Weighted Average Fair Value |  |  |  |  |
Restricted stock liability |  |  |  | $ 204 | $ 159
Restricted Stock Units (RSUs) |  |  |  |  |
Number of Shares |  |  |  |  |
Settled in cash | (92,500) | (90,500) | (90,500) |  |
Weighted Average Fair Value |  |  |  |  |
Fair value |  |  |  | 1,112 |
Unrecognized costs |  |  |  | $ 690 |
Unrecognized costs weighted-average period |  |  |  | 2 years 2 months 16 days |
Stock-based compensation expense |  |  |  | $ 204 | $ 265
Restricted Stock Units (RSUs) | Executive Officer [Member] |  |  |  |  |
Number of Shares |  |  |  |  |
Awarded |  |  |  | 660,606 |
Weighted Average Fair Value |  |  |  |  |
Vesting period |  |  |  | 3 years |
Stock-based compensation expense |  |  |  | $ 248 |
2016 Plan | Restricted Stock Units (RSUs) |  |  |  |  |
Number of Shares |  |  |  |  |
Outstanding at the beginning | 753,106 | 90,500 |  | 90,500 |
Awarded |  |  |  | 753,106 | 181,000
Settled in cash |  |  |  | (90,500) | (90,500)
Outstanding at the end |  |  |  | 753,106 | 90,500
Weighted Average Fair Value |  |  |  |  |
Outstanding at the beginning (in dollars per share) | $ 1.52 | $ 1.76 |  | $ 1.76 |
Awarded (in dollars per share) |  |  |  | 1.49 | $ 1.74
Settled in cash (in dollars per share) |  |  |  | 1.76 | 1.17
Outstanding at the end (in dollars per share) |  |  |  | $ 1.52 | $ 1.76

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were settled in cash during the reporting period. + References No definition available. + Details
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- Definition The weighted average fair value at grant date for non vested equity-based awards settled in cash during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
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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=116856206&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=115993241&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=116856206&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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