Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Summary of Significant Accounting Policies

Schedule of disaggregation or revenue

	Three Months Ended September 30,								Nine Months Ended September 30,
Revenue by Service Provided	2019				2018				2019				2018
HVAC and Plumbing	$	545,088	77.1	%	$	540,733	91.0	%	$	1,531,331	80.8	%	$	1,448,761	90.9	%
Electrical Services		116,902	16.5	%		1,611	0.3	%		218,061	11.5	%		1,611	0.1	%
Building Automation Control Systems		24,540	3.5	%		25,822	4.3	%		73,816	3.9	%		72,128	4.5	%
Other		20,388	2.9	%		26,370	4.4	%		72,485	3.8	%		72,020	4.5	%
Total	$	706,918	100.0	%	$	594,536	100.0	%	$	1,895,693	100.0	%	$	1,594,520	100.0	%
	Three Months Ended September 30,								Nine Months Ended September 30,
Revenue by Type of Customer	2019				2018				2019				2018
Industrial	$	222,156	31.4	%	$	184,174	31.0	%	$	588,818	31.1	%	$	398,351	25.0	%
Education		125,836	17.8	%		115,202	19.4	%		292,799	15.4	%		312,852	19.6	%
Office Buildings		83,271	11.8	%		75,871	12.8	%		254,966	13.5	%		224,300	14.1	%
Healthcare		126,909	18.0	%		79,424	13.3	%		306,810	16.2	%		214,537	13.4	%
Government		41,502	5.9	%		32,633	5.5	%		118,224	6.2	%		106,065	6.6	%
Retail, Restaurants and Entertainment		67,141	9.5	%		60,908	10.2	%		184,618	9.7	%		169,899	10.7	%
Multi-Family and Residential		24,121	3.4	%		33,903	5.7	%		83,417	4.4	%		102,995	6.5	%
Other		15,982	2.2	%		12,421	2.1	%		66,041	3.5	%		65,521	4.1	%
Total	$	706,918	100.0	%	$	594,536	100.0	%	$	1,895,693	100.0	%	$	1,594,520	100.0	%

	Three Months Ended September 30,								Nine Months Ended September 30,
Revenue by Activity Type	2019				2018				2019				2018
New Construction	$	312,279	44.2	%	$	227,715	38.3	%	$	827,718	43.7	%	$	606,208	38.0	%
Existing Building Construction		224,125	31.6	%		216,010	36.3	%		605,819	31.9	%		572,808	35.9	%
Service Projects		62,668	8.9	%		56,557	9.5	%		171,860	9.1	%		150,890	9.5	%
Service Calls, Maintenance and Monitoring		107,846	15.3	%		94,254	15.9	%		290,296	15.3	%		264,614	16.6	%
Total	$	706,918	100.0	%	$	594,536	100.0	%	$	1,895,693	100.0	%	$	1,594,520	100.0	%

Schedule of contract assets and liabilities

The following table presents the changes in contract assets and contract liabilities (in thousands):

	Nine Months Ended				Year Ended
	September 30, 2019				December 31, 2018
	Contract		Contract		Contract		Contract
	Assets		Liabilities		Assets		Liabilities
Balance at beginning of period	$	10,213	$	130,986	$	30,116	$	106,005
Change due to acquisitions / disposals		6,573		31,556		2,833		8,195
Change due to conditional versus unconditional		(10,665)		—		6,244		—
Reclassified to unbilled accounts receivable		—		—		(28,980)		—
Change in timing for performance obligation to be satisfied		—		4,555		—		16,786
Balance at end of period	$	6,121	$	167,097	$	10,213	$	130,986

Schedule of lease asset and liabilities

The following table summarizes the lease asset and liabilities included in the consolidated Balance Sheet as follows (in thousands):

	September 30, 2019
Lease right-of-use assets	$	84,281
Lease liabilities:
Other current liabilities		13,549
Long-term lease liabilities		73,213
Total lease liabilities	$	86,762

Schedule of maturities of lease liabilities

The maturities of lease liabilities are as follows (in thousands):

Year ending December 31—
2019 (excluding the nine months ended September 30, 2019)	$	4,326
2020		16,288
2021		14,477
2022		12,291
2023		10,328
Thereafter		44,617
Total Lease Payments		102,327
Less—Present Value Discount		(15,565)
Present Value of Lease Liabilities	$	86,762

Schedule of supplemental information related to leases

Supplemental information related to leases was as follows (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2019		September 30, 2019
Cash paid for amounts included in the measurement of lease liabilities	$	6,466	$	18,426
Lease right-of-use assets obtained in exchange for lease liabilities	$	7,050	$	10,768