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Short-Term Borrowings
 6 Months Ended
Jun. 30, 2014
Short-term Debt [Abstract]  
Short-term Debt [Text Block]
8.
Short-Term Borrowings
 
At June 30, 2014, the Company had a $60 million unsecured revolving line of credit with a bank expiring November 5, 2014. The line of credit bears interest at LIBOR plus 0.75%. At June 30, 2014, outstanding borrowings were approximately $10.8 million at an interest rate of 0.90%. The highest balance on the line of credit during the quarter was approximately $12.2 million.