Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Retained Earnings [Member]
Common stock dividends declared, per share (in dollars per share)	$ 0.0025	$ 0.0025	$ 0.0025	$ 0.0025
Preferred stock dividends declared, per share (in dollars per share)	$ 0.875	$ 0.875	$ 0.875	$ 0.875
Common Stock [Member]
Common stock issued for 401(k) match, shares (in shares)	362,000	331,000	745,000	552,000
Common stock issued for employee incentive compensation, shares (in shares)	3,597,000		3,594,380	1,237,369
Comon stock issued to pensions plans, shares (in shares)	2,384,000		2,384,000
Common stock issued to directors, shares (in shares)	253,000		253,000
Restricted stock unit distributions, shares (in shares)		1,079,000		1,079,000