| Schedule of Intangible Assets and Goodwill [Table Text Block] |
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2013
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2012
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Historical
Cost
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Accumulated
Amortization
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Historical
Cost
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Accumulated
Amortization
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Finite-lived intangible assets:
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Customer relationships
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$
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8,170
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$
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2,403
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$
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8,366
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$
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1,582
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Technology & drawings
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5,790
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1,685
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5,790
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1,379
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Other intangibles
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1,568
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1,505
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1,560
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1,453
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Total finite-lived intangible assets
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15,528
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5,593
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15,716
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4,414
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Goodwill
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18,046
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--
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17,452
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--
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Trade names & trademarks
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3,522
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--
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3,532
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--
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Total
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$
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37,096
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$
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5,593
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$
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36,700
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$
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4,414
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