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Debt Long-term debt (Tables)
6 Months Ended
Jun. 30, 2016
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
Long-term debt consists of the following:
 
June 30,
2016
 
December 31,
2015
Term note
$
56,469

 
$
58,906

Mortgage loan
3,034

 
3,114

Equipment loan
2,078

 
2,672

Total
61,581

 
64,692

Less amounts classified as current
7,472

 
6,638

Long-term debt, excluding current portion
$
54,109

 
$
58,054