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Significant Accounting Policies - Additional Information (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($) unit_Operation | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Significant Accounting Policies [Line Items] |  |  |
Maturity period of liquid investments | three months or less |  |
Bad debt expense | $ 3,600 | $ 2,800 | $ 1,700
Allowance for estimated credit losses | $ 12,700 | 11,200 |
Percentage of FIFO method of inventory in total inventory | 88.00% |  |
Percentage of LIFO method of inventory in total inventory | 12.00% |  |
Excess of the FIFO value over the LIFO value | $ 22,800 | 23,400 |
Depreciation expense | $ 101,300 | 101,400 | 85,400
Number of operating groups | unit_Operation | 2 |  |
Research and development costs | $ 158,900 | 161,900 | 141,000
Shipping and handling costs | 2,996,515 | 3,370,897 | 3,186,310
Shipping and Handling |  |  |
Significant Accounting Policies [Line Items] |  |  |
Shipping and handling costs | $ 56,800 | $ 66,700 | $ 62,700
Patents and Technology |  |  |
Significant Accounting Policies [Line Items] |  |  |
Weighted average life | 14 years |  |
Patents and Technology | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Useful life, maximum | 9 years |  |
Patents and Technology | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Useful life, maximum | 20 years |  |
Customer Relationship |  |  |
Significant Accounting Policies [Line Items] |  |  |
Weighted average life | 19 years |  |
Customer Relationship | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Useful life, maximum | 10 years |  |
Customer Relationship | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Useful life, maximum | 20 years |  |
Machinery and Equipment | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 3 years |  |
Machinery and Equipment | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 10 years |  |
Leasehold Improvements | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 5 years |  |
Leasehold Improvements | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 27 years |  |
Building | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 25 years |  |
Building | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Range of lives for depreciable assets, maximum | 50 years |  |

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