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Long-Term Debt (Narrative) (FY) (Details) - USD ($)
1 Months Ended 6 Months Ended 12 Months Ended
Nov. 20, 2019
Apr. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Mar. 31, 2020
Dec. 31, 2018
Debt Instrument [Line Items]            
Credit facility amount outstanding       $ 0   $ 0
Office [Member]            
Debt Instrument [Line Items]            
Term of contract     39 months 39 months    
Lease renewal term     12 months 36 months    
Lease expiration date       Aug. 31, 2020    
Prosperity Bank [Member]            
Debt Instrument [Line Items]            
Rate above prime 0.50% 0.50%        
Interest rate 5.25% 3.75% 3.75% 5.25%    
Credit facility maximum borrowing capacity $ 50,000,000     $ 1,970,000 $ 1,970,000  
Credit facility current borrowing capacity $ 1,970,000 $ 3,100,000 $ 3,100,000 4,000,000 $ 4,000,000  
Credit facility amount outstanding     0 0    
Prosperity Bank [Member] | Loans And Letters Of Credit [Member]            
Debt Instrument [Line Items]            
Credit facility maximum borrowing capacity     $ 50,000,000 $ 50,000,000    
Maximum [Member]            
Debt Instrument [Line Items]            
Borrowing rate       6.50%   6.50%
Maximum [Member] | Vehicles [Member]            
Debt Instrument [Line Items]            
Term of contract     36 months 36 months    
Maximum [Member] | Prosperity Bank [Member]            
Debt Instrument [Line Items]            
Funded debt to EBITDA     3.5 3.5    
Minimum [Member]            
Debt Instrument [Line Items]            
Borrowing rate       5.00%   5.00%
Minimum [Member] | Vehicles [Member]            
Debt Instrument [Line Items]            
Term of contract     18 months 18 months    
Minimum [Member] | Prosperity Bank [Member]            
Debt Instrument [Line Items]            
Current ratio     1 1    
Interest coverage     3.0 3.0