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Goodwill and Intangible Assets (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Goodwill and Other Intangible Assets |  |  |
Gross carrying amount of goodwill | $ 46,599,000 | $ 46,599,000 |
Indefinite-lived intangible tradenames | 8,556,000 | 8,556,000 |
Gross carrying amount of goodwill and other intangible assets | 59,691,000 | 59,691,000 |
Accumulated Amortization | 2,893,000 | 2,558,000 |
Net carrying amount of goodwill and other intangible assets | 56,798,000 | 57,133,000 |
Additional information on intangible assets |  |  |
Amortization expense | 335,000 | 335,000 | 335,000
Intangible asset amortization expense |  |  |
2014 | 300,000 |  |
2015 | 300,000 |  |
2016 | 300,000 |  |
2017 | 300,000 |  |
2018 | 300,000 |  |
Backlog |  |  |
Goodwill and Other Intangible Assets |  |  |
Gross carrying amount of finite-lived intangible assets | 521,000 | 521,000 |
Accumulated Amortization | 521,000 | 521,000 |
Customer relationships |  |  |
Goodwill and Other Intangible Assets |  |  |
Gross carrying amount of finite-lived intangible assets | 4,015,000 | 4,015,000 |
Accumulated Amortization | 2,372,000 | 2,037,000 |
Net carrying amount of goodwill and other intangible assets | 1,643,000 | 1,978,000 |
Additional information on intangible assets |  |  |
Estimated useful life | 12 years |  |
Remaining amortization period | 4 years 10 months 24 days |  |
Residual value | 0 |  |
T&D |  |  |
Goodwill and Other Intangible Assets |  |  |
Gross carrying amount of goodwill | 40,042,000 | 40,042,000 |
C&I |  |  |
Goodwill and Other Intangible Assets |  |  |
Gross carrying amount of goodwill | $ 6,557,000 | $ 6,557,000 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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