Revenue Recognition (Tables)

9 Months Ended

Sep. 28, 2019

Revenue Recognition [Abstract]

Disaggregation of revenue [Table Text Block]

The following tables disaggregate our revenue for the three and nine months ended September 28, 2019 and September 29, 2018 by major sources:

Three Months Ended September 28, 2019	Utility		Residential and Commercial		All Other			Consolidated
Type of service:
Tree and plant care	$	119,449	$	85,112	$	(86	)	$	204,475
Grounds maintenance	—		40,721		—			40,721
Storm damage services	1,709		1,550		—			3,259
Consulting and other	38,930		19,386		702			59,018
Total revenues	$	160,088	$	146,769	$	616		$	307,473
Geography:
United States	$	150,118	$	135,868	$	616		$	286,602
Canada	9,970		10,901		—			20,871
Total revenues	$	160,088	$	146,769	$	616		$	307,473

N. Revenue Recognition (continued)

Three Months Ended September 29, 2018	Utility		Residential and Commercial		All Other			Consolidated
Type of service:
Tree and plant care	$	99,766	$	79,709	$	(1,542	)	$	177,933
Grounds maintenance	—		26,024		—			26,024
Storm damage services	1,894		1,082		—			2,976
Consulting and other	34,108		23,593		684			58,385
Total revenues	$	135,768	$	130,408	$	(858	)	$	265,318
Geography:
United States	$	125,302	$	120,105	$	(858	)	$	244,549
Canada	10,466		10,303		—			20,769
Total revenues	$	135,768	$	130,408	$	(858	)	$	265,318

Nine Months Ended September 28, 2019	Utility		Residential and Commercial		All Other			Consolidated
Type of service:
Tree and plant care	$	335,658	$	231,988	$	(90	)	$	567,556
Grounds maintenance	—		114,320		—			114,320
Storm damage services	2,933		4,163		—			7,096
Consulting and other	113,158		53,663		1,003			167,824
Total revenues	$	451,749	$	404,134	$	913		$	856,796
Geography:
United States	$	420,701	$	376,304	$	913		$	797,918
Canada	31,048		27,830		—			58,878
Total revenues	$	451,749	$	404,134	$	913		$	856,796

N. Revenue Recognition (continued)

Nine Months Ended September 29, 2018	Utility		Residential and Commercial		All Other			Consolidated
Type of service:
Tree and plant care	$	283,200	$	222,646	$	(1,553	)	$	504,293
Grounds maintenance	—		86,612		—			86,612
Storm damage services	5,729		2,892		—			8,621
Consulting and other	94,022		49,068		2,002			145,092
Total revenues	$	382,951	$	361,218	$	449		$	744,618
Geography:
United States	$	354,416	$	332,488	$	449		$	687,353
Canada	28,535		28,730		—			57,265
Total revenues	$	382,951	$	361,218	$	449		$	744,618

Contract with customer, asset and liability [Table Text Block]

Net contract liabilities consisted of the following:

	September 28, 2019		December 31, 2018
Contract liabilities - current	$	3,454	$	2,907
Contract liabilities - noncurrent	2,621		2,287
Net contract liabilities	$	6,075	$	5,194