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Bank Financing Arrangements (Tables)
6 Months Ended
Jun. 30, 2019
Debt Disclosure [Abstract]  
Term loan and bank credit line balances

Amounts outstanding under the term loan and bank credit facilities at June 30, 2019 are as follows:

 

   June 30, 2019
Long-term portion of term loan    83,333 
Current-portion of term loan    500,000 
Term loan   $583,333 

 

   June 30, 2019
Lines of credit -domestic line    1,438,595 
Lines of credit -EXIM line    391,379 
Total lines of credit   $1,829,974