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Inventory (Tables) | 12 Months Ended
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Dec. 31, 2011
Inventory [Abstract] |
Composition of Inventory net of reserves |
|  | December 31, |
|  | 2011 |  |  | 2010 |
Parts and supplies |  | $ | 225,804 |  |  | $ | 244,618 |
Work in progress |  |  | 103,414 |  |  |  | 116,371 |
Finished goods |  |  | 32,467 |  |  |  | 35,298 |
Inventory, net of reserves |  | $ | 361,685 |  |  | $ | 396,287 |

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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 -Topic -SubTopic -Publisher SEC -Number 210 -Article 5 -Subparagraph a,b,c -Name Regulation S-X (SX) -Paragraph 6 -Section 2 + Details
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