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ACQUISITIONS (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Tennessee Rand, Inc. | Nov. 12, 2012 Kaliburn | Apr. 30, 2012 Wayne Trail Technologies Inc. | Dec. 31, 2011 Weartech International Inc. | Jun. 30, 2011 Techalloy | Jun. 30, 2011 Torchmate | Dec. 31, 2010 OOO Severstal-metiz | Jan. 31, 2011 SSCO Manufacturing, Inc. (d/b/a Arc Products) | Dec. 31, 2012 SSCO Manufacturing, Inc. (d/b/a Arc Products) | Dec. 31, 2010 SSCO Manufacturing, Inc. (d/b/a Arc Products) | Oct. 31, 2010 MGM | Oct. 29, 2010 MGM
Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration paid in cash and assumed debt | $ 143,504 |  |  |  | $ 65,321 |  |  |  | $ 143,504 | $ 65,321 |  |  |  |  |  |  |  |  |  |  |  |  | $ 28,500
Fair value of assets acquired | 75,764 |  |  |  | 46,837 |  |  |  | 75,764 | 46,837 |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill from acquisition | 67,740 |  |  |  | 22,290 |  |  |  | 67,740 | 22,290 |  |  |  |  |  |  |  |  |  |  |  |  |
Annual sales at the date of acquisition | 684,648 | 697,552 | 744,045 | 727,122 | 694,513 | 701,624 | 699,293 | 599,179 | 2,853,367 | 2,694,609 | 2,070,172 | 35,000 | 36,000 | 50,000 | 40,000 | 70,000 | 13,000 |  |  |  |  | 30,000 |
Sales for last annual period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,000 |  |  |  |  |
Fair value of contingent consideration liability |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,806 | $ 4,894 |  |  |
Period of estimated sales as basis for contingent consideration (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years | 5 years |  |  |
Sales for prior annual period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | not significant |  |

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