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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) |  | 12 Months Ended
--- | --- | ---
Sep. 01, 2015 | Dec. 31, 2020
The Corporation [Member] |  |
Maximum Value of Asset to Effect Dissolution | $ 1,000,000 | $ 1,000,000

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- Definition The maximum value where in the Amended and restated limited liability company agreement may effect dissolution upon the majority common interest or boards discretion. + References No definition available. + Details
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Namespace Prefix: | gyro_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_BusinessAcquisitionAxis=gyro_TheCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |