Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Jun. 30, 2018 |
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| Property, Plant and Equipment [Line Items] | |||
| Restricted cash | $ 400,000 | $ 400,000 | |
| Precious metals held under financing arrangements | $ 232,476,000 | $ 262,566,000 | |
| Revenue percentage from other sources (less than) | 1.00% | ||
| Earnings from equity method investment | $ 248,000 | $ 57,000 | |
| Advertising expense | 590,000 | 517,000 | |
| Shipping, handling costs | $ 1,740,000 | $ 1,084,000 | |
| Minimum | |||
| Property, Plant and Equipment [Line Items] | |||
| Estimated useful lives of related assets | 3 years | ||
| Estimated useful lives of intangibles | 3 years | ||
| Maximum | |||
| Property, Plant and Equipment [Line Items] | |||
| Estimated useful lives of related assets | 25 years | ||
| Estimated useful lives of intangibles | 15 years | ||
| X | ||||||||||
- Definition Asset Under Financing Agreement, With Repurchase Option No definition available.
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| X | ||||||||||
- Definition Revenue Recognition, Percentage Of Revenue From Storage, Logistics And Other Services No definition available.
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| X | ||||||||||
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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| X | ||||||||||
- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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. No definition available.
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| X | ||||||||||
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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| X | ||||||||||
- Definition Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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- Details
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