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Cash Dividend (Detail) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract] |  |  |  |  |
Cash dividend declaration date | Mar. 10, 2021 | Mar. 09, 2020 | Jun. 08, 2021 | Dec. 07, 2020 | Dec. 09, 2019
Cash dividend record date | Mar. 15, 2021 | Mar. 26, 2020 | Jun. 24, 2021 | Dec. 23, 2020 | Dec. 26, 2019
Cash dividend distributed date | Apr. 15, 2021 | Apr. 16, 2020 | Jul. 08, 2021 | Jan. 06, 2021 | Jan. 09, 2020
Cash dividend per share | $ 0.020 | $ 0.020 | $ 0.020 | $ 0.020 | $ 0.020
Cash dividend paid | $ 596 | $ 586 | $ 600 | $ 593 | $ 582

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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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