CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUE	$ 1,357,272	$ 1,331,185	$ 1,216,654
COST OF SERVICES	1,117,389	1,123,564	1,035,124
Gross profit	239,883	207,621	181,530
SELLING, GENERAL AND ADMINISTRATIVE EXPENSES	194,214	185,809	167,053
GOODWILL IMPAIRMENT	0	0	57,354
GAIN ON SALE OF ASSETS	(589)	(491)	(236)
Operating income (loss)	46,258	22,303	(42,641)
OTHER INCOME (EXPENSE):
Interest income	23	24	128
Interest expense	(1,351)	(1,595)	(1,886)
Changes in the fair value of contingent earn-out obligations	1,646	662	5,528
Other	204	145	934
Other income (expense)	522	(764)	4,704
INCOME (LOSS) BEFORE INCOME TAXES	46,780	21,539	(37,937)
INCOME TAX EXPENSE (BENEFIT)	18,148	10,045	(5,463)
INCOME (LOSS) FROM CONTINUING OPERATIONS	28,632	11,494	(32,474)
Income (loss) from discontinued operations, net of income tax expense (benefit) of $(119), $212 and $(2,709)	(76)	355	(4,018)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTERESTS	28,556	11,849	(36,492)
Less: Net income (loss) attributable to noncontrolling interests	1,287	(1,614)	338
NET INCOME (LOSS) ATTRIBUTABLE TO COMFORT SYSTEMS USA, INC	$ 27,269	$ 13,463	$ (36,830)
Basic-
Income (loss) from continuing operations (in dollars per share)	$ 0.73	$ 0.35	$ (0.88)
Income (loss) from discontinued operations (in dollars per share)		$ 0.01	$ (0.11)
Net income (loss) (in dollars per share)	$ 0.73	$ 0.36	$ (0.99)
Diluted-
Income (loss) from continuing operations (in dollars per share)	$ 0.73	$ 0.35	$ (0.88)
Income (loss) from discontinued operations (in dollars per share)		$ 0.01	$ (0.11)
Net income (loss) (in dollars per share)	$ 0.73	$ 0.36	$ (0.99)
SHARES USED IN COMPUTING INCOME (LOSS) PER SHARE:
Basic (in shares)	37,245	37,112	37,389
Diluted (in shares)	37,536	37,259	37,389
DIVIDENDS PER SHARE (in dollars per share)	$ 0.210	$ 0.200	$ 0.200