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Debt Long-term debt (Tables)
6 Months Ended
Jun. 30, 2015
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
Long-term debt consists of the following:
 
June 30,
2015
 
December 31,
2014
Term note
$
61,344

 
$
63,781

Mortgage loan
3,193

 
3,268

Equipment loan
3,250

 
3,826

Total
67,787

 
70,875

Less amounts classified as current
6,209

 
6,188

Long-term debt, excluding current portion
$
61,578

 
$
64,687