Annual report pursuant to Section 13 and 15(d)

Line of Credit (Details)

v3.21.1
Line of Credit (Details) - USD ($)
12 Months Ended
Oct. 31, 2019
Jul. 13, 2018
Dec. 31, 2020
Dec. 31, 2019
LIBOR [Member]        
Line of Credit Facility [Line Items]        
Description of annual interest rate     LIBOR Daily Floating  
Floating interest rate percentage     0.75%  
Revolving Line of Credit Agreement [Member]        
Line of Credit Facility [Line Items]        
Line of credit   $ 2,000,000 $ 3,012,000 $ 2,317,000
Line of credit, maturity date   Jul. 13, 2020    
Revolving Line of Credit Amendment [Member]        
Line of Credit Facility [Line Items]        
Line of credit $ 5,000,000      
Line of credit, maturity date Jul. 13, 2021