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Note 12 - Stockholders' Equity - Unvested Units Expected to Vest (Details) | Dec. 31, 2021 shares
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Unvested units expected to vest (in shares) | 2,022,352
Share-based Payment Arrangement, Tranche One [Member] |
Unvested units expected to vest (in shares) | 1,295,620
Share-based Payment Arrangement, Tranche Two [Member] |
Unvested units expected to vest (in shares) | 567,257
Share-based Payment Arrangement, Tranche Three [Member] |
Unvested units expected to vest (in shares) | 159,475

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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- Details
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Data Type: | na
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- Details
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Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember
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Data Type: | na
Balance Type: |
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