| Schedule of Property, Plant, and Equipment Components [Table Text Block] |
| | | December 31, | | | | 2016 | | 2015 | | Land and improvements | | $ | 3,191 | | | $ | 3,191 | | | Buildings and improvements | | | 28,241 | | | | 25,399 | | | Leasehold improvements | | | 2,759 | | | | 2,839 | | | Machinery & Equipment | | | 54,633 | | | | 51,016 | | | Furniture, fixtures, computers & software | | | 6,419 | | | | 6,498 | | | Construction in progress–equipment | | | 1,563 | | | | 1,621 | | | | | $ | 96,806 | | | $ | 90,564 | | |