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Nature of Business and Summary of Significant Accounting Policies - Schedule of Numerators and Denominators Used to Calculate Basic and Diluted Earnings Per Share (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Numerator (for basic and diluted earnings per share) |  |  |
Net income (loss) | $ 17,707 | $ (7,121) | $ (3,029)
Denominator |  |  |
Basic | 34,987,878 | 34,714,395 | 34,445,256
Common stock equivalents arising from stock options and restricted stock awards | 496,000 |  |
Diluted weighted-average shares outstanding | 35,484,273 | 34,714,395 | 34,445,256

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