Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Adjustment For Actuarially Determined Liabilities
Other comprehensive income, tax expense	$ (39)	$ (14)	$ (79)	$ (29)

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

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+ Details