Debt - Table Interest rates (Details)	Mar. 31, 2021	Dec. 31, 2020
Revolver [Member]
Debt Instrument [Line Items]
Long term Debt Weighted Average Interest Rate	1.61%	1.65%
Domestic Line Of Credit [Member]
Debt Instrument [Line Items]
Long term Debt Weighted Average Interest Rate	1.61%	1.65%
Foreign Line of Credit [Member]
Debt Instrument [Line Items]
Long term Debt Weighted Average Interest Rate	1.50%	1.50%
Industrial development bonds [Member]
Debt Instrument [Line Items]
Long term Debt Weighted Average Interest Rate	5.26%	5.26%