Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revision of Prior Period, Error Correction, Adjustment [Member] \| Correction of Balance Sheet Amounts [Member]
Retained earnings adjustments	$ 2,300		$ 2,300
Retained Earnings [Member]
Cash dividends (in dollars per share)	$ 0.31	$ 0.31	$ 0.62	$ 0.62
Retained earnings adjustments	$ (1,887,571)		$ (1,887,571)
Cash dividends (in dollars per share)	$ 0.31	$ 0.31	$ 0.62	$ 0.62

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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