Revenue Recognition (Tables)

3 Months Ended

Mar. 30, 2019

Revenue Recognition [Abstract]

Disaggregation of Revenue [Table Text Block]

The following tables disaggregate our revenue for the three months ended March 30, 2019 and March 31, 2018 by major sources:

Three Months Ended March 30, 2019	Utility		Residential and Commercial		All Other			Consolidated
Type of service:
Tree and plant care	$	103,386	$	60,427	$	(11	)	$	163,802
Grounds maintenance	—		27,942		—			27,942
Storm damage services	1,072		1,625		—			2,697
Consulting and other	36,011		17,401		36			53,448
Total revenues	$	140,469	$	107,395	$	25		$	247,889
Geography:
United States	$	129,882	$	100,999	$	25		$	230,906
Canada	10,587		6,396		—			16,983
Total revenues	$	140,469	$	107,395	$	25		$	247,889

N. Revenue Recognition (continued)

Three Months Ended March 31, 2018	Utility		Residential and Commercial		All Other		Consolidated
Type of service:
Tree and plant care	$	86,316	$	56,397	$	15	$	142,728
Grounds maintenance	—		22,802		—		22,802
Storm damage services	3,214		899		—		4,113
Consulting and other	29,157		9,247		604		39,008
Total revenues	$	118,687	$	89,345	$	619	$	208,651
Geography:
United States	$	110,453	$	82,478	$	619	$	193,550
Canada	8,234		6,867		—		15,101
Total revenues	$	118,687	$	89,345	$	619	$	208,651

Contract with Customer, Asset and Liability [Table Text Block]

Net contract liabilities consisted of the following:

	March 30, 2019		December 31, 2018
Contract liabilities - current	$	4,245	$	2,907
Contract liabilities - noncurrent	2,592		2,287
Net contract liabilities	$	6,837	$	5,194