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Business and Organization (Details)	6 Months Ended
	Jun. 30, 2012
Installation of systems in newly constructed facilities
Business and Organization
Percentage of revenue attributable to services	49.00%
Maintenance, repair and replacement service
Business and Organization
Percentage of revenue attributable to services	51.00%
HVAC
Business and Organization
Percentage of revenue attributable to services	74.00%
Plumbing
Business and Organization
Percentage of revenue attributable to services	18.00%
Building automation control systems
Business and Organization
Percentage of revenue attributable to services	5.00%
Other
Business and Organization
Percentage of revenue attributable to services	3.00%

X

- Definition

The percentage of net services revenue to total net revenue from the services rendered as of the year end.

+ References

No definition available.

+ Details

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- Details

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