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Note 16 - Subsequent Event (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 6 Months Ended
--- | --- | ---
Jul. 07, 2020 | Jun. 30, 2020 | Jun. 30, 2019
Proceeds from Issuance of Common Stock |  | $ 19,914 | $ 0
Subsequent Event [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 5,951,250 |  |
Shares Issued, Price Per Share (in dollars per share) | $ 14.50 |  |
Proceeds from Issuance of Common Stock | $ 86,000 |  |
Subsequent Event [Member] | Over-Allotment Option [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 776,250 |  |

X
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- Definition Number of new stock issued during the period. + References Reference 1: 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 Reference 2: 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 3: 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 4: 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(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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