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Accumulated Balances of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance | $ 43,538 |  |
Foreign currency translation adjustment | (78) | $ (129) | $ (190)
Unrealized holding gain arising during period | (865) | (1,453) | 620
Reclassification adjustment for loss included in net income |  | (76) |
Ending balance | 40,343 | 43,538 |
Foreign currency items |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance | (22,087) | (21,943) | (21,753)
Foreign currency translation adjustment | (177) | (144) | (190)
Ending balance | (22,264) | (22,087) | (21,943)
Unrealized gain (loss) on securities |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance | (1,282) | 232 | (388)
Foreign currency translation adjustment | 99 | 15 |
Unrealized holding gain arising during period | (865) | (1,453) | 620
Reclassification adjustment for loss included in net income |  | (76) |
Ending balance | (2,048) | (1,282) | 232
Pension and post retirement benefit plans |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance | (15) | (4) | (80)
Pension and post retirement benefit adjustment | 44 | (11) | 76
Ending balance | 29 | (15) | (4)
Accumulated other comprehensive loss |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance | (23,384) | (21,715) | (22,221)
Foreign currency translation adjustment | (78) | (129) | (190)
Pension and post retirement benefit adjustment | 44 | (11) | 76
Unrealized holding gain arising during period | (865) | (1,453) | 620
Reclassification adjustment for loss included in net income |  | (76) |
Ending balance | $ (24,283) | $ (23,384) | $ (21,715)

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