The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- 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

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (e)(1)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=gold_PriceRange1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=gold_PriceRange2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=gold_PriceRange3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=gold_PriceRange04Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=gold_PriceRange5Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Stockholders' Equity - Summary of Information about Stock Option (Details) - $ / shares	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Stock options outstanding, Number of Underlying Shares (shares)	687,827	1,177,862	1,158,530	1,446,260
Stock options outstanding, Weighted-Average Remaining Contractual Life	4 years 10 months 17 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 10.63	$ 9.68	$ 7.1	$ 7.11
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	571,494	934,529	1,116,866
Stock options exercisable, Weighted-Average Remaining Contractual Life	4 years 29 days
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 7.69
Price Range $0 - $2.50
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Ranges, lower range limit (in dollars per share)	0
Exercise Price Ranges, upper range limit (in dollars per share)	$ 2.5
Stock options outstanding, Number of Underlying Shares (shares)	337,294
Stock options outstanding, Weighted-Average Remaining Contractual Life	3 years 4 months 28 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 1.6
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	337,294
Stock options exercisable, Weighted-Average Remaining Contractual Life	3 years 4 months 28 days
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 1.6
Price Range $2.51 - $5.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Ranges, lower range limit (in dollars per share)	2.51
Exercise Price Ranges, upper range limit (in dollars per share)	$ 5
Stock options outstanding, Number of Underlying Shares (shares)	99,200
Stock options outstanding, Weighted-Average Remaining Contractual Life	2 years 1 month 24 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 3.51
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	99,200
Stock options exercisable, Weighted-Average Remaining Contractual Life	2 years 1 month 24 days
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 3.51
Price Range $5.01 - $20.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Ranges, lower range limit (in dollars per share)	5.01
Exercise Price Ranges, upper range limit (in dollars per share)	$ 20
Stock options outstanding, Number of Underlying Shares (shares)	30,000
Stock options outstanding, Weighted-Average Remaining Contractual Life	3 years 10 months 24 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 12.99
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	30,000
Stock options exercisable, Weighted-Average Remaining Contractual Life	3 years 10 months 24 days
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 12.99
Price Range $20.01 - $30.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Ranges, lower range limit (in dollars per share)	20.01
Exercise Price Ranges, upper range limit (in dollars per share)	$ 30
Stock options outstanding, Number of Underlying Shares (shares)	178,333
Stock options outstanding, Weighted-Average Remaining Contractual Life	8 years 9 months 18 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 24.66
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	65,000
Stock options exercisable, Weighted-Average Remaining Contractual Life	8 years 9 months 14 days
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 24.88
Price Range $30.01 - $60.00
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Price Ranges, lower range limit (in dollars per share)	30.01
Exercise Price Ranges, upper range limit (in dollars per share)	$ 60
Stock options outstanding, Number of Underlying Shares (shares)	43,000
Stock options outstanding, Weighted-Average Remaining Contractual Life	7 years 2 months 12 days
Stock options outstanding, Weighted-Average Exercise Price (in dollars per share)	$ 38.03
Stock options exercisable, Number of Underlying Shares Exercisable (shares)	40,000
Stock options exercisable, Weighted-Average Exercise Price (in dollars per share)	$ 37.44