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Capital Surplus and Retained Earnings - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019
Disclosure of reserves within equity [abstract]
Maximum percentage of capital surplus to paid-in-capital required by the ROC Securities and Exchange Act	10.00%
Percentage of income transferred to legal reserve	10.00%
Threshold percentage over capital stock to be distributed out of legal reserve	25.00%

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- Definition

Percentage of capital surplus to paid-in-capital.

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Percentage of net income allocation toward legal reserve.

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- Definition

Threshold percentage over capital stock to be distributed out of legal reserve.

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No definition available.

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