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Debt Long-term debt (Tables)
9 Months Ended
Sep. 30, 2016
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
Long-term debt consists of the following:
 
September 30,
2016
 
December 31,
2015
Term note
$
55,250

 
$
58,906

Mortgage loan
2,993

 
3,114

Equipment loan
1,779

 
2,672

Total
60,022

 
64,692

Less amounts classified as current
7,890

 
6,638

Long-term debt, excluding current portion
$
52,132

 
$
58,054