Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt (Components Of Long-Term Debt) (Details)

v3.21.2
Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Apr. 30, 2020
Line Of Credit Facility And Long Term Debt [Line Items]      
Total carrying amount of long-term debt $ 27,122 $ 34,621  
Less current portion (5,010) (4,000)  
Long-term debt, net 22,112 30,621  
Term Note [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Term note $ 16,000 $ 18,000 $ 20,000
Interest rate during the year 1.625% 2.0625%  
Quarterly payment $ 1,000    
Revolving Credit Facility [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Credit facility 10,112 $ 15,579  
Credit facility current borrowing capacity $ 60,000    
Percentage of domestic subsidiaries securing credit agreement 100.00%    
Percentage of foreign subsidiaries securing credit agreement 65.00%    
Credit facility, Interest rate at end of period 1.625% 2.0625%  
Foreign Credit Facility [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Credit facility $ 1,010 $ 1,042  
Credit facility, Interest rate at end of period 1.3387% 1.3387%