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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

X

- 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

Name:	gyro_MaximumValueOfAssetToEffectDissolution
Namespace Prefix:	gyro_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Details

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