Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2021
Income Taxes [Line Items]      
Uncertain tax benefit positions that would reduce the effective income tax rate if recognized $ 117,000    
Effective tax rate 0.00% 0.20%  
Federal tax rate 21.00%    
Foreign net operating loss carry-forwards and credits $ 0    
Increase (decrease) in income tax rate due to the effect of foreign operations (0.50%)    
Uncertain tax positions     $ 0
Domestic Tax Authority [Member] | Earliest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2017    
Domestic Tax Authority [Member] | Latest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2020    
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2016    
State and Local Jurisdiction [Member] | Latest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2020    
Foreign Tax Authority [Member] | Earliest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2017    
Foreign Tax Authority [Member] | Latest Tax Year [Member]      
Income Taxes [Line Items]      
Open tax year 2020