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RESTRUCTURING CHARGES (Details) (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Changes to accrued liability balance related to restructuring charges |  |  |  |
Beginning balance |  |  | $ 1,776,000 |
Additions for costs expensed | 1,515,000 | 2,941,000 | 5,828,000 | 2,941,000
Less non-cash expenses |  |  | (83,000) |
Reductions for payments |  |  | (7,118,000) |
Ending balance | 403,000 |  | 403,000 |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 5,828,000 |
Cumulative costs incurred |  |  | 17,422,000 |
Total expected costs |  |  | 17,937,000 |
Estimated additional charges |  |  | 500,000 |
North America contract operations |  |  |  |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 605,000 |
Cumulative costs incurred |  |  | 658,000 |
Total expected costs |  |  | 658,000 |
International contract operations |  |  |  |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 622,000 |
Cumulative costs incurred |  |  | 1,124,000 |
Total expected costs |  |  | 1,423,000 |
Aftermarket services |  |  |  |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 460,000 |
Cumulative costs incurred |  |  | 882,000 |
Total expected costs |  |  | 882,000 |
Fabrication |  |  |  |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 798,000 |
Cumulative costs incurred |  |  | 2,372,000 |
Total expected costs |  |  | 2,422,000 |
Other |  |  |  |
Restructuring charges by segment |  |  |  |
Costs incurred in 2012 |  |  | 3,343,000 |
Cumulative costs incurred |  |  | 12,386,000 |
Total expected costs |  |  | $ 12,552,000 |

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