Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Restricted stock unit distributions, shares (in shares)	1,653,000	1,702,000	1,653,000	1,702,000
Common stock dividends declared, per common share (in dollars per share)	$ 0.01125	$ 0.25	$ 0.02	$ 0.005
Preferred stock dividends declared, per share (in dollars per share)	$ 0.875	$ 0.875	$ 1.75	$ 1.75
Common stock issued for 401(k) match, shares (in shares)	217,000	606,000	382,000	957,000
Stock issued to directors, shares (in shares)	207,000		207,000
Common stock issued for employee incentive compensation, shares (in shares)		2,800,000		2,800,000
Common stock issued to pension plans, shares (in shares)		167,000	3,500,000	167,000
Treasury shares issued to charitable foundation, share (in shares)		650,000		650,000