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Long term debt (Tables)
12 Months Ended
Dec. 31, 2015
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
Long term debt consists of the following:
 
 
 
December 31,
 
 
 
2015
 
2014
 
 
 
 
 
 
 
 
 
Demand loan payable with an original balance of $10.0 million, payable in quarterly installments of $500,000 with the remaining principal balance due on May 14, 2016 if not called by the lender; bearing interest at LIBOR plus 1.5%.
 
$
7,000,000
 
$
9,000,000
 
Total debt
 
 
7,000,000
 
 
9,000,000
 
Less current portion
 
 
7,000,000
 
 
9,000,000
 
Long term debt, excluding current portion
 
$
-
 
$
-