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Note 11 - Treasury Stock and Repurchase Program (Details Textual) - USD ($) shares in Thousands | 1 Months Ended | 3 Months Ended |
--- | --- | --- | ---
Jul. 31, 2020 | Jun. 30, 2020 | May 31, 2020 | Jul. 31, 2020 | Apr. 17, 2020
Treasury Stock, Shares, Acquired (in shares) |  |  |  | 0 |
October 2018 Share Repurchase Program [Member] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 2,000,000

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: 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 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Details
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