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Note 17 - Geographic Information - Asset Information by Geographic Region (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Long-lived assets | $ 253,086 | $ 259,862
UNITED STATES |  |
Long-lived assets | 85,756 | 87,709
TAIWAN |  |
Long-lived assets | 59,995 | 63,644
CHINA |  |
Long-lived assets | $ 107,335 | $ 108,509

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- Definition Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 + Details
Name: | us-gaap_NoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Data Type: | na
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- Details
Name: | srt_StatementGeographicalAxis=country_TW
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | srt_StatementGeographicalAxis=country_CN
Namespace Prefix: |
Data Type: | na
Balance Type: |
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