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Inventory (Tables) | 6 Months Ended
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Jun. 30, 2013
Inventory Disclosure [Abstract] |
Schedule of Inventory, Current [Table Text Block] | Our inventory, net of allowance for obsolescence of $258,000 at June 30, 2013 and $211,000 at December 31, 2012, consisted of the following amounts:
| June 30, 2013 |  | December 31, 2012
| (in thousands)
Raw materials | $ | 20,855 |  |  | $ | 19,654 |
Work in process | 5,348 |  |  | 6,855 |
| $ | 26,203 |  |  | $ | 26,509 |

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- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 2 -Paragraph 6 -Subparagraph a,b,c -Article 5 + Details
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