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Business and Organization (Details) | 12 Months Ended
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Dec. 31, 2012
Installation of systems in newly constructed facilities |
Business and Organization |
Percentage of revenue attributable to services | 47.00%
Maintenance, repair and replacement service |
Business and Organization |
Percentage of revenue attributable to services | 53.00%
HVAC |
Business and Organization |
Percentage of revenue attributable to services | 75.00%
Plumbing |
Business and Organization |
Percentage of revenue attributable to services | 16.00%
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 | 4.00%

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- 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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Namespace Prefix: | fix_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | fix_ScheduleOfBusinessAndOrganizationLineItems
Namespace Prefix: | fix_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration