Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND TOTAL COMPREHENSIVE INCOME (Parentheticals)

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CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND TOTAL COMPREHENSIVE INCOME (Parentheticals) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Income Statement [Abstract]    
Other comprehensive income - periodic pension costs $ 2 $ 8