CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUE	$ 1,580,519	$ 1,410,795	$ 1,357,272
COST OF SERVICES	1,262,390	1,161,024	1,117,389
Gross profit	318,129	249,771	239,883
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	228,965	207,652	194,214
GOODWILL IMPAIRMENT		727
GAIN ON SALE OF ASSETS	(880)	(830)	(589)
Operating income	90,044	42,222	46,258
OTHER INCOME (EXPENSE):
Interest income	72	18	23
Interest expense	(1,753)	(1,858)	(1,351)
Changes in the fair value of contingent earn-out obligations	225	(245)	1,646
Other	76	91	204
Other income (expense)	(1,380)	(1,994)	522
INCOME BEFORE INCOME TAXES	88,664	40,228	46,780
INCOME TAX EXPENSE	31,224	11,614	18,148
INCOME FROM CONTINUING OPERATIONS	57,440	28,614	28,632
Income (loss) from discontinued operations, net of income tax expense (benefit) of $(0), $(10) and $(119)		(15)	(76)
NET INCOME INCLUDING NONCONTROLLING INTERESTS	57,440	28,599	28,556
Less: Net income attributable to noncontrolling interests	8,076	5,536	1,287
NET INCOME ATTRIBUTABLE TO COMFORT SYSTEMS USA, INC.	$ 49,364	$ 23,063	$ 27,269
Basic-
Income from continuing operations (in dollars per share)	$ 1.32	$ 0.61	$ 0.73
Net income (in dollars per share)	1.32	0.61	0.73
Diluted-
Income from continuing operations (in dollars per share)	1.30	0.61	0.73
Net income (in dollars per share)	$ 1.30	$ 0.61	$ 0.73
SHARES USED IN COMPUTING INCOME PER SHARE:
Basic (in shares)	37,442	37,547	37,245
Diluted (in shares)	37,868	37,797	37,536
DIVIDENDS PER SHARE (in dollars per share)	$ 0.250	$ 0.225	$ 0.210