XML 71 R7.htm IDEA: XBRL DOCUMENT
v3.20.1

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Common stock dividends declared, per common share (in dollars per share) | $ 0.0025 | $ 0.0025
Preferred stock dividends declared, per share (in dollars per share) | $ 0.875 | $ 0.875
Common stock issued for 401(k) match, shares (in shares) | 352,000 | 384,000

X
- Definition The number of shares of stock issued during period for a 401k match. + References No definition available. + Details
Name: | hl_StockIssuedDuringPeriodShares401kMatch
Namespace Prefix: | hl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
Name: | us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends declared during the period for each share of preferred stock outstanding. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration