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Stock Repurchase Plans - Schedule of Number of Shares Purchased and Maximum Value of Shares that May Yet Be Purchased Under the Plan (Detail) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
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Dec. 31, 2021 | Nov. 30, 2021 | Oct. 31, 2021 | Sep. 30, 2021 | Aug. 31, 2021 | Jul. 31, 2021 | Jun. 30, 2021 | May 31, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Feb. 28, 2021 | Jan. 31, 2021 | Dec. 31, 2021
Equity Class Of Treasury Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Total Number of Shares Purchased | 62,044 | 1,700 | 409 | 212 | 53 | 703 | 1,117 | 1,144 | 968 | 0 | 2,630 | 63,349 | 134,329
Average Price Paid Per Share | $ 79.18 | $ 82.28 | $ 77.76 | $ 69.85 | $ 67.38 | $ 65.48 | $ 65.24 | $ 66.50 | $ 66.89 | $ 0 | $ 56.29 | $ 57.00 | $ 67.91
Maximum Value of Shares that May Yet Be Purchased Under the Plan | $ 75,002 |  |  |  |  |  |  |  |  |  |  |  | $ 75,002

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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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