Stockholders' Equity - Summary of Stock Option Plan Activity (Detail) - $ / shares	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Number of Options
Number of Options, Outstanding at Beginning of the year	1,121,262	3,956,827
Number of Options, Granted	0	0
Number of Options, Cancelled	0	0
Number of Options, Forfeited	0	0
Number of Options, Outstanding at End of Year	1,121,262	3,956,827
Number of Options, Exercisable at End of Year	206,410	3,760
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding at Beginning Balance	$ 3.26	$ 6.22
Weighted Average Exercise Price, Granted	0	0
Weighted Average Exercise Price, Cancelled	0	0
Weighted Average Exercise Price, Forfeited	0	0
Weighted Average Exercise Price, Outstanding at Ending Balance	3.26	6.22
Weighted Average Exercise Price, Exercisable	$ 11.20	$ 293.95

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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