XML 83 R49.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Summary of Significant Accounting Policies - Schedule of Concentration Parenthetical (Details) - Customer Concentration Risk - Minimum
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Revenues Net      
Revenue Initial Application Period Cumulative Effect Transition [Line Items]      
Concentration risk percentage 10.00% 10.00% 10.00%
Accounts Receivable      
Revenue Initial Application Period Cumulative Effect Transition [Line Items]      
Concentration risk percentage 10.00% 10.00% 10.00%