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

Concentrations (Q1) (Details)

v3.21.1
Concentrations (Q1) (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Concentration Risk [Line Items]        
Concentration risk, percentage 100.00% 100.00% 100.00% 100.00%
Inventory purchases | Supplier concentration risk | Three vendors        
Concentration Risk [Line Items]        
Concentration risk, percentage 71.00%      
Inventory purchases | Supplier concentration risk | Two vendors        
Concentration Risk [Line Items]        
Concentration risk, percentage   48.00%    
Accounts receivable | Customer concentration risk | Two customers        
Concentration Risk [Line Items]        
Concentration risk, percentage 63.00%   72.00%  
Gross sales | Customer concentration risk | Two customers        
Concentration Risk [Line Items]        
Concentration risk, percentage 42.00%   38.00%  
Gross sales | Customer concentration risk | Four customers        
Concentration Risk [Line Items]        
Concentration risk, percentage   70.00%