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Investment in Gold - Schedule of Investment in Gold (Details) $ in Thousands		6 Months Ended		12 Months Ended
		Dec. 31, 2019 USD ($) oz		Jun. 30, 2019 USD ($) oz
Investment In Gold
Opening balance (in Ounces) | oz		387,215.425		200,692.594
Gold bullion contributed (in Ounces) | oz		24,907.242		220,426.035
Gold bullion distributed (in Ounces) | oz		(22,751.633)		(33,903.204)
Change in unrealized depreciation (in Ounces) | oz
Closing balance (in Ounces) | oz		389,371.034		387,215.425
Investment in gold, fair value, opening balance | $		$ 545,586	[1]	$ 250,956
Gold bullion contributed | $		37,409		280,234
Gold bullion distributed | $		(29,501)		(43,452)
Change in unrealized depreciation on investment in gold | $		39,518		57,848
Investment in gold, fair value, closing balance | $	[1]	$ 593,012		$ 545,586
[1] Cost of investment in gold bullion: $504,913 and $497,005, respectively.

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Amount contributed of bullion in investment.

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Value of contributed bullion to investments.

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Amount distributed of bullion in investment.

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Value of distributed bullion to investments.

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Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

+ 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 http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Quantity of the investment. Indicate the measure in the unit of measure. This is commonly used for investments other than securities. For example, if the investment is gold, the balance would be the number of ounces and the unit of measure would indicate "ounces".

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5
-Subparagraph (SX 210.12-13.2, Column B)
-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611282-123010

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