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Stock-Based Compensation - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Options Outstanding, Aggregate Intrinsic Value |  | $ 100,000
New Employees |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Outstanding awards | 0 | 0
Options |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Unamortized compensation cost, net of expected forfeitures | $ 200,000 |
Weighted average expected period over which the expense is to be recognized | 1 year 4 months 24 days |
Fair value of vested options and awards | $ 200,000 | $ 300,000
Dividend yield (as a percent) | 0.00% | 0.00%
Stock options exercised | 0 | 0
RSU's |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Unamortized compensation cost, net of expected forfeitures | $ 300,000 |
Weighted average expected period over which the expense is to be recognized | 9 months 18 days |
Equity Incentive Plan 2010 |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Options granted (in shares) |  | 0
Outstanding awards |  | 172,000
Equity Incentive Plan 2010 | RSU's |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Total intrinsic value of the restricted stock units outstanding | $ 200,000 | $ 200,000
Stock Incentive Plan 2019 |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Number of shares reserved for issuance | 182,500 |
Stock Incentive Plan 2019 | Options |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Maximum annual option grants or other awards to the entity's non-employee directors (in shares) | 2,000 |
Maximum one-time grant of an option or other awards to the entity's non employee directors (in shares) | $ 6,000 |
Minimum percentage of voting rights required for applicability of a specific expiration term | 10.00% |
Maximum expiration term of options granted | 5 years |
Term of plan | 10 years |
Stock Incentive Plan 2019 | Options | Minimum |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period of replacement options | 3 years |
Stock Incentive Plan 2019 | Options | Maximum |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |
Vesting period of replacement options | 4 years |

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- Definition Represents the maximum expiration term of awards granted applicable to holders of a specific percentage of voting rights of all classes of outstanding stock on the date of grant. + References No definition available. + Details
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- Definition Represents the minimum percentage of voting rights of all classes of outstanding stock, on the date of grant, held by the persons to whom awards were granted for applicability of specific expiration term of options. + References No definition available. + Details
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- Definition Represents the shares reserved for grant under option or other awards to the entity's non-employee directors annually under the share-based compensation plan. + References No definition available. + Details
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- Definition Represents the shares reserved for one-time grant under option or other awards to the entity's non-employee directors under the share-based compensation plan. + References No definition available. + Details
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- Definition Represents the term of share-based compensation plans. + References No definition available. + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Amount of cost to be recognized for 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 (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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