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Stockholders' Equity - Additional Information - Deferred Stock Units (Detail) - Deferred Stock Units [Member] - USD ($) | 12 Months Ended |
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Dec. 31, 2019 | Sep. 01, 2019
Schedule Of Stockholders Equity [Line Items] |  |
Number of stock unit received |  | 1
Deferred stock units | 14,451 |
Director [Member] |  |
Schedule Of Stockholders Equity [Line Items] |  |
Director compensation expense related to grants | $ 34,649 |

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- Definition Schedule of stockholders equity. + References No definition available. + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + 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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