Increase in ownership interest through the conversion of loan to equity.

No definition available.

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Namespace Prefix:	gato_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of concentrate products of the company.

+ References

No definition available.

+ Details

Name:	gato_NumberOfConcentrateProducts
Namespace Prefix:	gato_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of meter exploration program commenced.

+ References

No definition available.

+ Details

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Namespace Prefix:	gato_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	gato_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Ownership interest that was repurchased

+ References

No definition available.

+ Details

Name:	gato_OwnershipInterestRepurchased
Namespace Prefix:	gato_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187143-122770

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=gato_LosGatosJointVentureMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=gato_DowaMetalsAndMiningCo.LtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Description of Business (Details) $ in Thousands					1 Months Ended	12 Months Ended
Description of Business (Details) $ in Thousands	Mar. 11, 2021 USD ($)	Oct. 30, 2020	Sep. 01, 2019 product	May 01, 2019	May 31, 2019	Dec. 31, 2021 item	Jul. 26, 2021	Apr. 01, 2016 USD ($)
Description of Business
Reverse stock split ratio		2
Minera Luz del Sol S. de R.L. de C.V. ("MLS")
Description of Business
Area of exploration program commenced (in meters) \| item						5,400
LGJV
Description of Business
Ownership percentage	70.00%					70.00%	70.00%
Ownership interest that was repurchased						18.50%
Number of concentrate products \| product			2
Dowa \| LGJV
Description of Business
Ownership percentage	70.00%				48.50%	30.00%	30.00%	30.00%
Funding requirement made								$ 50,000
Increase in equity interest in LGJV through loan conversion					18.50%
Ownership interest that was repurchased	18.50%
Total consideration for repurchase of interest	$ 71,550
Amount higher basis than the underlying net assets	$ 47,400
Dowa \| LGJV \| Minimum
Description of Business
Increase in equity interest in LGJV through loan conversion				18.50%
Dowa \| LGJV \| Maximum
Description of Business
Increase in equity interest in LGJV through loan conversion					48.50%