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Basis of Presentation and Summary of Significant Accounting Policies - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Jun. 27, 2020 | Dec. 31, 2019
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale securities | $ 16,720 | $ 1,642
Waters 401(k) Restoration Plan assets | 33,453 | 30,158
Total | 54,931 | 36,301
Contingent consideration | 2,787 | 2,557
Total | 3,520 | 3,585
Foreign Currency Exchange Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value, derivative asset | 366 | 16
Foreign currency exchange contracts | 733 | 1,028
Cross Currency Interest Rate Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value, derivative asset | 4,392 | 4,485
Time Deposits [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale securities | 16,720 | 1,642
Fair Value, Measurements, Recurring [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Contingent consideration |  | 3,000
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Waters 401(k) Restoration Plan assets | 33,453 | 30,158
Total | 33,453 | 30,158
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total | 21,478 | 6,143
Total | 733 | 1,028
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Foreign Currency Exchange Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value, derivative asset | 366 | 16
Foreign currency exchange contracts | 733 | 1,028
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Cross Currency Interest Rate Contract [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value, derivative asset | 4,392 | 4,485
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 2) [Member] | Time Deposits [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Available for sale securities | 16,720 | 1,642
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Contingent consideration | 2,787 | 2,557
Total | $ 2,787 | $ 2,557

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