XML 43 R33.htm IDEA: XBRL DOCUMENT v3.20.2
Revenue from Contracts with Customers - Narrative (Details)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Major Customer | Revenue Benchmark | Customer Concentration Risk    
Concentration Risk [Line Items]    
Concentration risk, percentage 11.60% 10.90%