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Goodwill and other intangible assets | 6 Months Ended
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Jun. 30, 2011
Goodwill and other intangible assets [Abstract] |
Goodwill and other intangible assets |
11. | Goodwill and other intangible assets
| The changes in the carrying amount of goodwill were as follows:
|  | Balance |  |  | Goodwill |  |  | Balance |
|  | as of |  |  | Acquired |  |  | as of |
Six Months Ended |  | January 1, |  |  | During |  |  | June 30, |
June 30, 2011 |  |  | 2011* |  |  | the Year** |  |  |  | 2011* |
|  | (In thousands) |
Electric |  | $ | - |  |  | $ | - |  |  | $ | - |
Natural gas distribution |  |  | 345,736 |  |  |  | - |  |  |  | 345,736 |
Construction services |  |  | 102,870 |  |  |  | 298 |  |  |  | 103,168 |
Pipeline and energy services |  |  | 9,737 |  |  |  | - |  |  |  | 9,737 |
Natural gas and oil production |  |  | - |  |  |  | - |  |  |  | - |
Construction materials and contracting |  |  | 176,290 |  |  |  | - |  |  |  | 176,290 |
Other |  |  | - |  |  |  | - |  |  |  | - |
Total |  | $ | 634,633 |  |  | $ | 298 |  |  | $ | 634,931 |
*Balance is presented net of accumulated impairment of $12.3 million at the pipeline and energy services segment, which occurred in prior periods. **Includes a purchase price adjustment that was not material related to an acquisition in a prior period. |
Six Months Ended June 30, 2010 |  | Balance as of January 1, 2010* |  |  | Goodwill Acquired During the Year** |  |  | Balance as of June 30, 2010* |
|  | (In thousands) |
Electric |  | $ | - |  |  | $ | - |  |  | $ | - |
Natural gas distribution |  |  | 345,736 |  |  |  | - |  |  |  | 345,736 |
Construction services |  |  | 100,127 |  |  |  | 2,764 |  |  |  | 102,891 |
Pipeline and energy services |  |  | 7,857 |  |  |  | 1,880 |  |  |  | 9,737 |
Natural gas and oil production |  |  | - |  |  |  | - |  |  |  | - |
Construction materials and contracting |  |  | 175,743 |  |  |  | 547 |  |  |  | 176,290 |
Other |  |  | - |  |  |  | - |  |  |  | - |
Total |  | $ | 629,463 |  |  | $ | 5,191 |  |  | $ | 634,654 |
*Balance is presented net of accumulated impairment of $12.3 million at the pipeline and energy services segment, which occurred in prior periods. **Includes purchase price adjustments that were not material related to acquisitions in a prior period. |
|  | Balance |  |  | Goodwill |  |  | Balance
|  | as of |  |  | Acquired |  |  | as of
Year Ended |  | January 1, |  |  | During the |  |  | December 31,
December 31, 2010 |  |  | 2010* |  |  | Year** |  |  |  | 2010* |
|  | (In thousands)
Electric |  | $ | - |  |  | $ | - |  |  | $ | - |
Natural gas distribution |  |  | 345,736 |  |  |  | - |  |  |  | 345,736 |
Construction services |  |  | 100,127 |  |  |  | 2,743 |  |  |  | 102,870 |
Pipeline and energy services |  |  | 7,857 |  |  |  | 1,880 |  |  |  | 9,737 |
Natural gas and oil production |  |  | - |  |  |  | - |  |  |  | - |
Construction materials and contracting |  |  | 175,743 |  |  |  | 547 |  |  |  | 176,290 |
Other |  |  | - |  |  |  | - |  |  |  | - |
Total |  | $ | 629,463 |  |  | $ | 5,170 |  |  | $ | 634,633 |
*Balance is presented net of accumulated impairment of $12.3 million at the pipeline and energy services segment, which occurred in prior periods. **Includes purchase price adjustments that were not material related to acquisitions in a prior period.
| Other amortizable intangible assets were as follows:
|  | June 30, 2011 |  |  | June 30, 2010 |  |  | December 31, 2010 |
|  | (In thousands) |
Customer relationships |  | $ | 21,702 |  |  | $ | 24,942 |  |  | $ | 24,942 |
Accumulated amortization |  |  | (9,395 | ) |  |  | (10,688 | ) |  |  | (11,625 | )
|  |  | 12,307 |  |  |  | 14,254 |  |  |  | 13,317 |
Noncompete agreements |  |  | 7,685 |  |  |  | 9,405 |  |  |  | 9,405 |
Accumulated amortization |  |  | (5,062 | ) |  |  | (6,033 | ) |  |  | (6,425 | )
|  |  | 2,623 |  |  |  | 3,372 |  |  |  | 2,980 |
Other |  |  | 12,899 |  |  |  | 12,063 |  |  |  | 13,217 |
Accumulated amortization |  |  | (4,492 | ) |  |  | (3,490 | ) |  |  | (4,243 | )
|  |  | 8,407 |  |  |  | 8,573 |  |  |  | 8,974 |
Total |  | $ | 23,337 |  |  | $ | 26,199 |  |  | $ | 25,271 |
| Amortization expense for amortizable intangible assets for the three and six months ended June 30, 2011, was $1.0 million and $1.9 million, respectively. Amortization expense for amortizable intangible assets for the three and six months ended June 30, 2010, was $1.1 million and $2.1 million, respectively. Estimated amortization expense for amortizable intangible assets is $4.0 million in 2011, $3.9 million in 2012, $3.7 million in 2013, $3.4 million in 2014, $2.7 million in 2015 and $7.5 million thereafter.

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 42, 43, 44, 45, 46, 47 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16373-109275 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6905597&loc=d3e13854-109267 + Details
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