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Stockholders' Equity (Deficit) - Summary of Stock Option Activity (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Number of Shares, Outstanding, Beginning	238,651	238,651	238,651
Number of Shares, Granted	0	0	0
Number of Shares, Exercised	0	0	0
Number of Shares, Cancelled	0	0	0
Number of Shares, Outstanding, Ending	238,651	238,651	238,651
Number of Shares, Options exercisable	238,651	238,651	238,651
Weighted Average Exercise Price Outstanding, Beginning	$ 15.95	$ 15.95	$ 15.95
Weighted Average Exercise Price, Granted	0	0	0
Weighted Average Exercise Price, Exercised	0	0	0
Weighted Average Exercise Price, Cancelled	0	0	0
Weighted Average Exercise Price, Outstanding, Ending	15.95	15.95	15.95
Weighted Average Exercise Price, Options exercisable	$ 15.95	$ 15.95	$ 15.95

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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.

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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.

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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 option holders acquired shares when converting their stock options into shares.

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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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Number of share options (or share units) exercised during the current period.

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