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Accumulated Balances of Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ (22,401)	$ (22,246)	$ (22,332)
Foreign currency translation adjustment	203	224	66
Pension and post retirement benefit adjustment	14	(28)	20
Unrealized holding loss arising during period	(124)	(351)
Reclassification adjustment for loss included in net income	97
Other	(10)
Ending balance	(22,221)	(22,401)	(22,246)
Foreign currency items
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(21,956)	(22,180)	(22,246)
Foreign currency translation adjustment	203	224	66
Ending balance	(21,753)	(21,956)	(22,180)
Unrealized gain on securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(351)
Unrealized holding loss arising during period	(124)	(351)
Reclassification adjustment for loss included in net income	97
Other	(10)
Ending balance	(388)	(351)
Pension and post retirement benefit plans
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(94)	(66)	(86)
Pension and post retirement benefit adjustment	14	(28)	20
Ending balance	$ (80)	$ (94)	$ (66)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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