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Note 12 - Commitments - Allocation of Retention Bonus (Details)

Dec. 31, 2019

Bonus pool percentage

100.00%

Board Members [Member]

Bonus pool percentage

65.00%

^[1]

Chief Executive Officer [Member]

Bonus pool percentage

15.474%

Chief Operating Officer [Member]

Bonus pool percentage

13.926%

Officer [Member]

Bonus pool percentage

1.75%

^[2]

Other Employees [Member]

Bonus pool percentage

3.85%

[1]	15% for the Chairman and 50% for the directors other than the Chairman (10% for each of the other five directors).
[2]	The officer discretionary amount of 1.75% is vested but not allocated and will be allocated to the officers within the discretion of the Board.

X

- Definition

The percentage amount of the discretionary bonus pool applicable to certain defined benefit plans.

+ References

No definition available.

+ Details

Name:	gyro_DefinedBenefitPlanDistretionaryBonusPoolPercentage
Namespace Prefix:	gyro_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	srt_TitleOfIndividualAxis=gyro_BoardMembersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_ChiefOperatingOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=srt_OfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_TitleOfIndividualAxis=gyro_OtherEmployeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: