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Stockholders' Equity - Additional Information - Deferred Stock Units (Detail) - Deferred Stock Units [Member] - USD ($)	12 Months Ended
	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

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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-Topic 718
-SubTopic 10
-Section 50
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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).

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