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Debt Long-term debt (Tables)
3 Months Ended
Mar. 31, 2015
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
Long-term debt consists of the following:
 
March 31,
2015
 
December 31,
2014
Term note
62,563

 
63,781

Mortgage loan
3,231

 
3,268

Equipment loan
3,539

 
3,826

Total
69,333

 
70,875

Less amounts classified as current
6,198

 
6,188

Long-term debt, excluding current portion
$
63,135

 
$
64,687