General form of registration statement for all companies including face-amount certificate companies

Concentration of credit risk and off-balance sheet risk (Q1) (Details)

v3.20.2
Concentration of credit risk and off-balance sheet risk (Q1) (Details) - Customer
3 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Gross Sales [Member]      
Concentration Risk [Line Items]      
Concentration risk percentage   10.00% 10.00%
Gross Sales [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of customers 4    
Concentration risk percentage 70.00%    
Accounts Receivable [Member]      
Concentration Risk [Line Items]      
Concentration risk percentage   44.00% 68.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Number of customers 2 1  
Concentration risk percentage 79.00% 44.00%