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Business Segment, Geographic and Major Customer Information (Tables) | 9 Months Ended
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Sep. 30, 2012
Business Segment, Geographic and Major Customer Information [Abstract] |
Financial information regarding reportable segments |
|  | Chemicals |  |  | Drilling |  |  | Artificial Lift |  |  | Corporate |  |  | Total |
As of and for the Three Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from external customers |  | $ | 44,189 |  |  | $ | 30,424 |  |  | $ | 4,015 |  |  | $ | — |  |  | $ | 78,628 |
Gross margin |  |  | 20,774 |  |  |  | 11,252 |  |  |  | 1,817 |  |  |  | — |  |  |  | 33,843 |
Income (loss) from operations |  |  | 16,530 |  |  |  | 5,329 |  |  |  | 1,384 |  |  |  | (8,650 | ) |  |  | 14,593 |
Depreciation and amortization |  |  | 460 |  |  |  | 2,277 |  |  |  | 54 |  |  |  | 177 |  |  |  | 2,968 |
Total assets |  |  | 53,076 |  |  |  | 122,533 |  |  |  | 10,563 |  |  |  | 31,963 |  |  |  | 218,135 |
Capital expenditures |  |  | 733 |  |  |  | 2,384 |  |  |  | 5 |  |  |  | 2,643 |  |  |  | 5,765 |
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from external customers |  | $ | 43,639 |  |  | $ | 26,963 |  |  | $ | 4,456 |  |  | $ | — |  |  | $ | 75,058 |
Gross margin |  |  | 17,393 |  |  |  | 11,091 |  |  |  | 2,233 |  |  |  | — |  |  |  | 30,717 |
Income (loss) from operations |  |  | 13,795 |  |  |  | 5,585 |  |  |  | 1,811 |  |  |  | (5,086 | ) |  |  | 16,105 |
Depreciation and amortization |  |  | 409 |  |  |  | 2,056 |  |  |  | 50 |  |  |  | 53 |  |  |  | 2,568 |
Total assets |  |  | 56,880 |  |  |  | 111,804 |  |  |  | 10,162 |  |  |  | 32,182 |  |  |  | 211,028 |
Capital expenditures |  |  | 928 |  |  |  | 945 |  |  |  | 38 |  |  |  | 403 |  |  |  | 2,314 |
|  | Chemicals |  |  | Drilling |  |  | Artificial Lift |  |  | Corporate |  |  | Total |
As of and for the Nine Months Ended September 30, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from external customers |  | $ | 137,827 |  |  | $ | 89,214 |  |  | $ | 9,085 |  |  | $ | — |  |  | $ | 236,126 |
Gross margin |  |  | 61,856 |  |  |  | 34,764 |  |  |  | 3,699 |  |  |  | — |  |  |  | 100,319 |
Income (loss) from operations |  |  | 50,005 |  |  |  | 17,320 |  |  |  | 2,284 |  |  |  | (22,679 | ) |  |  | 46,930 |
Depreciation and amortization |  |  | 1,321 |  |  |  | 6,738 |  |  |  | 148 |  |  |  | 261 |  |  |  | 8,468 |
Total assets |  |  | 53,076 |  |  |  | 122,533 |  |  |  | 10,563 |  |  |  | 31,963 |  |  |  | 218,135 |
Capital expenditures |  |  | 2,896 |  |  |  | 7,724 |  |  |  | 73 |  |  |  | 4,550 |  |  |  | 15,243 |
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net revenue from external customers |  | $ | 99,707 |  |  | $ | 74,068 |  |  | $ | 10,106 |  |  | $ | — |  |  | $ | 183,881 |
Gross margin |  |  | 39,705 |  |  |  | 30,844 |  |  |  | 3,557 |  |  |  | — |  |  |  | 74,106 |
Income (loss) from operations |  |  | 30,586 |  |  |  | 16,187 |  |  |  | 2,205 |  |  |  | (15,683 | ) |  |  | 33,295 |
Depreciation and amortization |  |  | 1,189 |  |  |  | 5,979 |  |  |  | 155 |  |  |  | 209 |  |  |  | 7,532 |
Total assets |  |  | 56,880 |  |  |  | 111,804 |  |  |  | 10,162 |  |  |  | 32,182 |  |  |  | 211,028 |
Capital expenditures |  |  | 1,090 |  |  |  | 3,900 |  |  |  | 48 |  |  |  | 933 |  |  |  | 5,971 |
Revenue by geographic location |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
U.S. |  | $ | 68,512 |  |  | $ | 63,906 |  |  | $ | 206,394 |  |  | $ | 159,756 |
Other countries |  |  | 10,116 |  |  |  | 11,152 |  |  |  | 29,731 |  |  |  | 24,125 |
Total |  | $ | 78,628 |  |  | $ | 75,058 |  |  | $ | 236,125 |  |  | $ | 183,881 |
Summary of revenue from major customers |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Customer A |  |  | 16.6 | % |  |  | 14.6 | % |  |  | 15.2 | % |  |  | 13.7 | %
Customer B |  |  | 9.5 | % |  |  | 12.8 | % |  |  | 10.4 | % |  |  | 11.7 | %
Customer C |  |  | 12.1 | % |  |  | 5.8 | % |  |  | 9.8 | % |  |  | 4.5 | %

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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 + Details
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