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Summary of Significant Accounting Policies - Concentration of Credit Risk (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Trade Accounts Receivable
Concentration Risk [Line Items]
Percentage	26.00%	26.00%
Accounts Receivable
Concentration Risk [Line Items]
Percentage	59.00%	53.00%
Sales Revenue, Net
Concentration Risk [Line Items]
Percentage	10.00%	11.00%
UNITED STATES | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage	28.00%	24.00%
CANADA | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage	12.00%	13.00%
SWITZERLAND | Sales Revenue, Net
Concentration Risk [Line Items]
Percentage	14.00%	10.00%

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