Investments in Marketable Debt Securities, Available-for-Sale - Gross Realized Gains and Losses from Sale of Available for Sale Securities (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Investments, Debt and Equity Securities [Abstract] | |||
| Gross realized gains | $ 221 | $ 241 | $ 134 |
| Gross realized losses | $ (2) | $ (49) | $ (47) |
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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