Assets and Liabilities, at Fair Value (Narrative) (Details) $ in Thousands |
Jun. 30, 2017
USD ($)
investment
|
Jun. 30, 2016
USD ($)
|
|---|---|---|
| Fair Value Disclosures [Abstract] | ||
| Commemorative coins, held at lower of cost or market | $ 40 | $ 16 |
| Number of investments | investment | 2 | |
| Equity and cost method investment | $ 7,967 | $ 7,873 |
| X | ||||||||||
- Definition Equity Method and Cost Method Investment, Total No definition available.
|
| X | ||||||||||
- Definition Inventory, Commemorative Coin, Stated At Lower Cost Or Market No definition available.
|
| X | ||||||||||
- Definition Number of Investments No definition available.
|
| X | ||||||||||
- References No definition available.
|