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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Director [Member] |  |  |  |
Common stock issued for incentive compensation, shares (in shares) | 391,000 |  | 391,000 |
Common stock dividends declared, per common share (in dollars per share) | $ 0.0025 | $ 0.0025 | $ 0.0075 | $ 0.0075
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) | 439,000 | 562,000 | 1,396,000 | 1,307,000
Common stock issued to pension plans, shares (in shares) | 2,058,000 |  | 2,225,000 | 2,384,000
Common stock issued for incentive compensation, shares (in shares) |  |  | 2,800,000 | 3,579,380
Restricted stock unit distributions, shares (in shares) |  | 1,164,000 | 1,702,000 | 1,164,000
Teasury shares issued to charitable foundation, shares (in shares) |  |  | 650,000 |
Stock Issued During Period, Shares, New Issues |  |  |  | 253,000

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