Condensed Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restricted stock unit distributions, shares (in shares)			1,789,042	1,653,000
Common stock dividends declared, per common share (in dollars per share)	$ 0.000625	$ 0.01125	$ 0.0125	$ 0.03125
Preferred stock dividends declared, per share (in dollars per share)	$ 0.875	$ 0.875	$ 2.625	$ 2.625
Common stock issued for 401(k) match, shares (in shares)	422,860	141,000	321,110	524,000
Stock issued to directors, shares (in shares)			98,310	207,000
Common stock issued to pension plans, shares (in shares)		1,000,000	1,190,000	4,500,000
Common stock issued to Alexco Resources Corp. shareholders, shares (in shares)	17,992,875		17,992,875
Common stock issued to settle the acquired silver stream, shares (in shares)	34,800,990		34,800,990
Common stock issued under ATM program, shares (in shares)	1,176,861		1,176,861