XML 87 R69.htm IDEA: XBRL DOCUMENT v2.4.0.6

Segment Information (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
An allocation of total depreciation, including depreciation of shared construction equipment, and amortization
Depreciation and amortization	$ 25,156	$ 19,511	$ 16,290
T&D
An allocation of total depreciation, including depreciation of shared construction equipment, and amortization
Depreciation and amortization	23,758	18,426	14,820
C&I
An allocation of total depreciation, including depreciation of shared construction equipment, and amortization
Depreciation and amortization	$ 1,398	$ 1,085	$ 1,470

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ 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=6943989&loc=d3e3602-108585

+ Details

Name:	us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration