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Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2013
Segment Information [Abstract] |
Segment Information Report of Statements of Operations |
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2013 |  |  | 2012 |  |  | 2013 |  |  | 2012 |
|  | (in thousands) |  |  | (in thousands) |
Net sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water Transmission |  | $ | 58,148 |  |  | $ | 59,050 |  |  | $ | 136,761 |  |  | $ | 117,481 |
Tubular Products |  |  | 58,590 |  |  |  | 71,991 |  |  |  | 120,574 |  |  |  | 155,735 |
Total |  | $ | 116,738 |  |  | $ | 131,041 |  |  | $ | 257,335 |  |  | $ | 273,216 |
Gross profit: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water Transmission |  | $ | 12,125 |  |  | $ | 8,149 |  |  | $ | 31,995 |  |  | $ | 17,848 |
Tubular Products |  |  | 3,543 |  |  |  | 5,428 |  |  |  | 4,877 |  |  |  | 12,229 |
Total |  | $ | 15,668 |  |  | $ | 13,577 |  |  | $ | 36,872 |  |  | $ | 30,077 |
Operating income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Water Transmission |  | $ | 10,499 |  |  | $ | 6,130 |  |  | $ | 28,532 |  |  | $ | 14,154 |
Tubular Products |  |  | 2,885 |  |  |  | 4,651 |  |  |  | 3,551 |  |  |  | 10,847 |
Corporate |  |  | (4,004 | ) |  |  | (3,811 | ) |  |  | (7,883 | ) |  |  | (8,852 | )
Total |  | $ | 9,380 |  |  | $ | 6,970 |  |  | $ | 24,200 |  |  | $ | 16,149 |

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