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Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy | 3 Months Ended
--- | ---
Sep. 30, 2015 $ / shares $ / oz
$30 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly average realized silver price per ounce (in Dollars per Ounce) | $ / oz | 30
Quarterly dividend per share | $ 0.01
Annual dividend per share | $ 0.04
$35 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly average realized silver price per ounce (in Dollars per Ounce) | $ / oz | 35
Quarterly dividend per share | $ 0.02
Annual dividend per share | $ 0.08
$40 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly average realized silver price per ounce (in Dollars per Ounce) | $ / oz | 40
Quarterly dividend per share | $ 0.03
Annual dividend per share | $ 0.12
$45 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly average realized silver price per ounce (in Dollars per Ounce) | $ / oz | 45
Quarterly dividend per share | $ 0.04
Annual dividend per share | $ 0.16
$50 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly average realized silver price per ounce (in Dollars per Ounce) | $ / oz | 50
Quarterly dividend per share | $ 0.05
Annual dividend per share | $ 0.20

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