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Business and Organization (Details)
|
3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | ||
|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2012
Entity
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Dec. 31, 2011
Entity
|
Mar. 31, 2012
Electric Power Division [Member]
CANADA
Entity
|
Dec. 31, 2011
Electric Power Division [Member]
CANADA
Entity
|
Jun. 30, 2012
Electric Power Division [Member]
UNITED STATES
Entity
|
Mar. 31, 2012
Electric Power Division [Member]
UNITED STATES
Entity
|
Dec. 31, 2011
Electric Power Division [Member]
UNITED STATES
Entity
|
Mar. 31, 2012
Natural Gas and Pipeline Division [Member]
UNITED STATES
Entity
|
|
| Additional Business and Organization (Textual) [Abstract] | ||||||||||
| Number of business acquisitions completed | 3 | 5 | 1 | 3 | 1 | 1 | 1 | 1 | ||
| Business and Organization (Textual) [Abstract] | ||||||||||
| Fiber Optic Licensing Terms, Minimum in years | 5 years | 5 years | ||||||||
| Fiber Optic Licensing Terms, Maximum in years | 25 years | 25 years | ||||||||