XML 18 R3.htm IDEA: XBRL DOCUMENT v3.21.1
CONSOLIDATED BALANCE SHEET (Parenthetical) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Statement of Financial Position [Abstract]    
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 2,810,000 2,810,000
Common stock, shares issued 2,810,000 2,810,000
Common stock, shares outstanding 1,994,177 1,998,978
Treasury stock, shares 815,823 811,022