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Stockholder's Equity - Schedule of Changes in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year | $ 284,115 |  |
Net change in balance during year | (40) | $ (162) | $ (28)
Balance at end of year | 304,506 | 284,115 |
Currency Translation |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year | (172,434) | (164,467) | (175,859)
Other comprehensive income (loss) | (409) | (7,967) | 11,392
Balance at end of year | (172,843) | (172,434) | (164,467)
Marketable Securities |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year |  | 46,069 | 20,473
Change in accounting principle-ASU 2016-01 |  | (46,069) |
Balance at beginning of year, as adjusted |  |  | 20,473
Other comprehensive income (loss) - unrealized gain (loss) arising during the year |  |  | 25,596
Balance at end of year |  |  | 46,069
Accumulated Defined Benefit Plans Adjustment | Defined Benefit Pension Plans |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year | (75,286) | (72,951) | (76,710)
Other comprehensive income (loss) | 3,539 | (2,335) | 2,956
Net actuarial gain (loss) arising during year | (6,510) |  | 803
Balance at end of year | (78,257) | (75,286) | (72,951)
Interest Rate Swap | Kronos |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year |  |  | (390)
Other comprehensive income (loss) - unrealized gain (loss) arising during the year |  |  | (296)
Reclassification adjustment for amounts included in realized loss and equity in earnings |  |  | 686
Other |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year | (550) | (388) | (360)
Net change in balance during year | (40) | (162) | (28)
Balance at end of year | (590) | (550) | (388)
Total Accumulated Other Comprehensive Income (Loss), Net of Tax |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Balance at beginning of year | (248,270) | (191,737) | (232,846)
Change in accounting principle-ASU 2016-01 |  | (46,069) |
Balance at beginning of year, as adjusted | (248,270) | (237,806) | (232,846)
Other comprehensive income (loss) | (3,420) | (10,464) | 41,109
Balance at end of year | $ (251,690) | $ (248,270) | $ (191,737)

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