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Summary of Assets and Liabilities Recorded at Fair Value on Recurring Basis (Detail) - Recurring - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets: |  |
Assets, fair value | $ 178,706 | $ 213,370
Liabilities: |  |
Liabilities, fair value | 35,510 | 32,998
Money Market Mutual Funds |  |
Assets: |  |
Assets, fair value | 60,175 | 106,530
Certificates of Deposit |  |
Assets: |  |
Assets, fair value | 2,200 | 5,415
Available for Sale Securities |  |
Assets: |  |
Assets, fair value | 70,478 | 55,594
Deferred Compensation Assets |  |
Assets: |  |
Assets, fair value | 35,510 | 32,998
Interest Rate Swap Agreements |  |
Assets: |  |
Assets, fair value |  | 3,925
Foreign Currency Foreign Exchange Contracts |  |
Assets: |  |
Assets, fair value | 10,343 | 8,908
Deferred Compensation Liability |  |
Liabilities: |  |
Liabilities, fair value | 35,510 | 32,998
Basis of Fair Value Measurement, Level 1 |  |
Assets: |  |
Assets, fair value | 168,363 | 200,537
Liabilities: |  |
Liabilities, fair value | 35,510 | 32,998
Basis of Fair Value Measurement, Level 1 | Money Market Mutual Funds |  |
Assets: |  |
Assets, fair value | 60,175 | 106,530
Basis of Fair Value Measurement, Level 1 | Certificates of Deposit |  |
Assets: |  |
Assets, fair value | 2,200 | 5,415
Basis of Fair Value Measurement, Level 1 | Available for Sale Securities |  |
Assets: |  |
Assets, fair value | 70,478 | 55,594
Basis of Fair Value Measurement, Level 1 | Deferred Compensation Assets |  |
Assets: |  |
Assets, fair value | 35,510 | 32,998
Basis of Fair Value Measurement, Level 1 | Deferred Compensation Liability |  |
Liabilities: |  |
Liabilities, fair value | 35,510 | 32,998
Basis of Fair Value Measurement, Level 2 |  |
Assets: |  |
Assets, fair value | 10,343 | 12,833
Basis of Fair Value Measurement, Level 2 | Interest Rate Swap Agreements |  |
Assets: |  |
Assets, fair value |  | 3,925
Basis of Fair Value Measurement, Level 2 | Foreign Currency Foreign Exchange Contracts |  |
Assets: |  |
Assets, fair value | $ 10,343 | $ 8,908

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