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Income Taxes
3 Months Ended
Mar. 31, 2020
Income Tax Disclosure [Abstract]  
Income Tax [Text Block] Income Taxes On March 27, 2020, the U.S. government enacted the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act”), which includes modifications to the limitation on business interest expense deductions and net operating loss provisions. The effective tax rate was (10.6)% for the three months ended March 31, 2020, compared to 17.1% in 2019, primarily as a result of the tax benefit of net operating loss carrybacks at a 35% tax rate that became available as a result of the CARES Act.