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Stockholders' Equity - Additional Information - Stock Options (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Stockholders Equity [Line Items]
Options outstanding, intrinsic value	$ 360,573	$ 7,220
Options exercisable, intrinsic value	53,259	7,220
Stock-based compensation expense	1,019,409	$ 775,851
Unvested share-based awards	$ 1,400,000
Expected weighted average period to recognize unearned stock-based compensation	2 years
Stock Options [Member]
Schedule Of Stockholders Equity [Line Items]
Weighted-average grant-date fair value	$ 1.23	$ 1.71

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Schedule of stockholders equity.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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