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Note 14 - Capital Stock - Dividends Paid (Details) - $ / shares		3 Months Ended
	May 04, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Equity [Abstract]
Common Stock, Dividends, Per Share, Declared		$ 0.125	$ 0.125	$ 0.125	$ 0.125	$ 0.125
Capital Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.125	$ 0.125	$ 0.125	$ 0.125	$ 0.125
Subsequent Event
Equity [Abstract]
Common Stock, Dividends, Per Share, Declared	$ 0.14
Capital Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.14

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

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