Consolidated Statements of Changes in Shareholders' Equity - Unaudited (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Stockholders' Equity [Abstract]
Dividends paid or accrued per common share (in dollars per share)	$ 0.27	$ 0.26	$ 0.54	$ 0.52
Other comprehensive income, tax expense (benefit)	$ 1,235	$ 40	$ 1,102	$ 1,816

Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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