XML 53 R37.htm IDEA: XBRL DOCUMENT v3.21.1

Note 5 - Disposition Activities (Details Textual)	May 11, 2020 USD ($) a	Dec. 07, 2019 USD ($) a	Aug. 27, 2019 USD ($) a
Flowerfield Complex in Smithtown, New York [Member]
Area of Land (Acre) | a			9
Flowerfield Complex in Smithtown, New York [Member] | BSL St. James LLC [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total			$ 16,800,000
Cortlandt Manor Property In New York [Member]
Area of Land (Acre) | a		4.5
Proceeds from Sale of Property, Plant, and Equipment, Total		$ 5,720,000
Sale of Vacant Land [Member]
Area of Real Estate Property (Square Foot) | a	5
Sale of Real Estate Property, Purchase Price	$ 500,000
Proceeds from Sale of Real Estate, Total	25,000
Sale of Real Estate Property, Amount Receivable	$ 475,000

X

- Definition

The amount of receivable generated from the sale of real estate property.

+ References

No definition available.

+ Details

Name:	gyro_SaleOfRealEstatePropertyAmountReceivable
Namespace Prefix:	gyro_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The purchase price of the real estate property.

+ References

No definition available.

+ Details

Name:	gyro_SaleOfRealEstatePropertyPurchasePrice
Namespace Prefix:	gyro_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Area of land held.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Area of a real estate property.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfRealEstateProperty
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfRealEstate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=gyro_FlowerfieldComplexInSmithtownNewYorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_CounterpartyNameAxis=gyro_BSLStJamesLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=gyro_CortlandtManorPropertyInNewYorkMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=gyro_SaleOfVacantLandMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: