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Short-Term Borrowings
9 Months Ended
Sep. 30, 2017
Short-term Debt [Abstract]  
Short-term Debt [Text Block]
10.
Short-Term Borrowings
 
At September 30, 2017, the Company had a $60 million unsecured revolving line of credit with a bank expiring November 3, 2017. The line of credit bears interest at the daily London Interbank Offered Rate (“LIBOR”) plus 0.75%. At September 30, 2017, outstanding borrowings were approximately $4.8 million at an interest rate of 2.0%. The highest balance on the line of credit during the quarter was approximately $4.8 million. Subsequent to September 30, 2017, the line of credit agreement was renewed on the same terms for another one-year period, expiring November 4, 2018.