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Derivative Financial Instruments - Detailed Information About Weighted Average Assumptions of Non-traded Warrants (Detail) - $ / shares | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
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Risk-free rate | 1.70% | 1.90%
Warrant expected life | 1 year 2 months 12 days | 2 years 2 months 12 days
Expected volatility | 45.10% | 46.20%
Expected dividend | 0.00% | 0.00%
Share price | $ 10.16 | $ 5.25

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