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v3.19.3.a.u2

Interest Income and Other (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Other Income and Expenses [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  |  |  |  |  |  |  | $ 4,761 | $ 5,448 | $ 3,968
Foreign exchange transaction gains (losses), net |  |  |  |  |  |  |  |  | (3,056) | 261 | (77)
Other |  |  |  |  |  |  |  |  | 356 | (732) | (139)
Total | $ (3,680) | $ 2,973 | $ 2,609 | $ 159 | $ 2,903 | $ 1,400 | $ 2,474 | $ (1,800) | $ 2,061 | $ 4,977 | $ 3,752

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