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Subsequent events (Additional Information) (Details) - Jul. 10, 2023 - Subsequent Event [Member] $ / shares in Units, $ in Millions, $ in Millions | USD ($) $ / shares shares | CAD ($) shares
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Alexco Resource Corp |  |
Subsequent Event [Line Items] |  |
Common stock per share | $ / shares | $ 0.0166 |
Hecla |  |
Subsequent Event [Line Items] |  |
Common stock outstanding shares | shares | 5,502,956 | 5,502,956
Capital Invest | $ |  | $ 2
Interest Rate | 19.90% | 19.90%
Canada | Alexco Resource Corp |  |
Subsequent Event [Line Items] |  |
Common stock value | $ | $ 18.8 |
Canada | Hecla |  |
Subsequent Event [Line Items] |  |
Issuance of Common Share | shares | 3,676,904 | 3,676,904

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