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Treasury Stock	12 Months Ended
Treasury Stock	Dec. 31, 2018
TreasuryStockTextBlockAbstract
Treasury Stock	TREASURY STOCK Common shares held in treasury totaled 655,306 and 644,091 with a cost of $1,484 and $1,472 at December 31, 2018 and 2017, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested during the current and prior years.