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Acquisitions - Summary of Pro Forma Data (Detail) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020
Business Acquisition [Line Items] |  |
Pro-forma total revenues | $ 471,955 | $ 496,963
Pro-forma net income | $ 64,618 | $ 76,585
Pro-forma basic earnings per share | $ 2.67 | $ 3.17
Pro-forma diluted earnings per share | $ 2.64 | $ 3.12
Design Space and Kitchens To Go [Member] |  |
Business Acquisition [Line Items] |  |
Actual total revenues | $ 22,191 |
Actual net income | $ 177 |
Actual basic earnings per share | $ 0.01 |
Actual diluted earnings per share | $ 0.01 |

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