XML 66 R42.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy (USD $) | 9 Months Ended
--- | ---
Sep. 30, 2013
$30 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
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 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 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 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 dividend per share | $ 0.05
Annual dividend per share | $ 0.20
$55 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly dividend per share | $ 0.06
Annual dividend per share | $ 0.24
$60 [Member] |
Note 8 - Shareholders' Equity (Details) - Common Stock Dividend Policy [Line Items] |
Quarterly dividend per share | $ 0.07
Annual dividend per share | $ 0.28

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_AnnualDividendPerShare
Namespace Prefix: | hl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | hl_Note8ShareholdersEquityDetailsCommonStockDividendPolicyLineItems
Namespace Prefix: | hl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition No authoritative reference available. + References No definition available. + Details
Name: | hl_QuarterlyDividendPerShare
Namespace Prefix: | hl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration