XML 33 R1.htm IDEA: XBRL DOCUMENT v2.4.1.9
Document and Entity Information
 3 Months Ended
Mar. 31, 2015
Apr. 24, 2015
Dec. 31, 2014
Document and Entity Information      
Entity Registrant Name COMFORT SYSTEMS USA INC    
Entity Central Index Key 0001035983    
Document Type 10-Q    
Document Period End Date Mar. 31, 2015    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   37,391,203dei_EntityCommonStockSharesOutstanding  
Treasury Stock, Shares 3,816,216us-gaap_TreasuryStockShares 3,732,162us-gaap_TreasuryStockShares 3,853,586us-gaap_TreasuryStockShares
Document Fiscal Year Focus 2015    
Document Fiscal Period Focus Q1