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CAPITAL STOCK (Tables)
 12 Months Ended
Dec. 31, 2021
CAPITAL STOCK [Abstract]  
Schedule of Capital Stock The activity related to outstanding common stock and common stock held in treasury was as follows:
202120202019
Outstanding Common StockTreasury StockOutstanding Common StockTreasury StockOutstanding Common StockTreasury Stock
Balance at beginning of period52,524,391 57,134,828 53,687,528 55,971,691 55,862,360 53,796,859 
Exercise of stock options188,444 (188,444)311,374 (311,374)232,052 (232,052)
Settlement of restricted stock units – net of 61,377, 41,019, and 26,107 shares retained, respectively
127,969 (127,969)82,241 (82,241)52,182 (52,182)
Settlement of performance share units – net of 9,746, 16,830, and 6,737 shares retained, respectively
12,507 (12,507)28,098 (28,098)14,027 (14,027)
Purchase of treasury shares(1,633,106)1,633,106 (1,584,850)1,584,850 (2,473,093)2,473,093 
Balance at end of period51,220,205 58,439,014 52,524,391 57,134,828 53,687,528 55,971,691