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Earnings Per Shares - Schedule of Weighted Average Number of Shares (Parenthetical) (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Participating Securities	15,122	15,002
Potentially Dilutive common stock equivalents	6	152

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- Definition

Potentially Dilutive Common Stock Equivalents.

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Participating Securities

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