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Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2019
Income Taxes [Abstract]
Income Taxes	E. Income Taxes The effective tax rate (“ETR”) for the three months ended March 31, 2019 and March 31, 2018 was 25.7% and 22.6%, respectively. The ETR for the first quarter of 2019 included an accrual of $1.5 million related to an adjustment in an uncertain tax position. The ETR absent this accrual was 20.4%.