XML 46 R32.htm IDEA: XBRL DOCUMENT v3.20.4
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%