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Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Common Stock [Member] |  |  |  |
Restricted stock units distributed, shares (in shares) | 1,164,000 |  | 1,164,000 | 1,079,000
Common stock issued for 401(k) match, shares (in shares) | 562,000 | 226,000 | 1,307,000 | 778,000
Common stock issued for cash, net of offering costs, shares (in shares) |  | 1,026,000 |  | 1,026,000
Common stock issued to directors, shares (in shares) |  | 162,000 | 253,000 | 162,000
Common stock issued to pension plans, shares (in shares) |  | 1,871,000 | 2,384,000 | 1,871,000
Common stock and warrants issued for purchase of another company, shares (in shares) |  | 75,276,000 |  | 75,276,000
Common stock issued for employee incentive compensation , shares (in shares) |  |  | 3,597,380 | 1,237,000
Retained Earnings [Member] |  |  |  |
Common stock dividends declared, per 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 cash, net of offering costs, shares (in shares) |  |  | 0 |

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