Contingencies	9 Months Ended
Oct. 03, 2015
Commitments and Contingencies Disclosure [Abstract]
Contingencies [Text Block]	Contingencies We are party to a number of lawsuits, threatened lawsuits and other claims arising out of the normal course of business. With respect to all such matters, we record an accrual for a loss contingency when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. In addition, narrative information is provided for matters as to which management believes a material loss is reasonably possible. Management assesses all such matters, including the matter described below, based on current information and makes judgments concerning their potential outcome, giving due consideration to the nature of the claim, the amount and nature of damages sought and the probability of success. Management's judgment is made subject to the known uncertainty of litigation and management's judgment as to estimates made may prove materially different from actual results. California Fire Litigation: San Diego County--Davey Tree Surgery Company, a Davey subsidiary, and Davey Resource Group, a Davey division, along with the Company have previously been sued, together with a utility services customer, San Diego Gas & Electric ("SDG&E"), and its parent company, as defendants, and as cross-defendants in cross-complaints filed by SDG&E, in the Superior Court of the State of California in and for the County of San Diego, arising out of a wildfire in San Diego County that started on October 22, 2007, referred to as the Rice Canyon fire. Numerous lawsuits related to the Rice Canyon fire were filed against SDG&E, its parent company, Sempra Energy, and Davey. The earliest of the lawsuits naming Davey was filed on April 18, 2008. The Court ordered that the lawsuits be organized into four groups based on type of plaintiff, namely insurance subrogation claimants, individual/business claimants, governmental claimants, and plaintiffs seeking class certification. Plaintiffs motions seeking class certification were denied and the orders denying class certification were affirmed on appeal. SDG&E filed cross-complaints against Davey for contractual indemnity, declaratory relief, and breach of contract. During the third quarter 2012, Davey entered into a Settlement and Release Agreement (the “Agreement”) among Davey, SDG&E and Davey's insurers. Under the Agreement (a) Davey paid SDG&E an amount previously expensed and accrued as self-insurance, (b) Davey's insurers paid SDG&E amounts under Davey's insurance policies in effect during the period of the Rice Canyon fire, and (c) SDG&E dismissed its cross-complaints against Davey and agreed to defend and hold harmless Davey from any and all claims that are currently asserted against Davey. During 2013, the Master Complaint for the lawsuits brought by governmental entities was dismissed with prejudice. In the third quarter 2015, the Master Complaints for the lawsuits by insurers and individuals were dismissed with prejudice. As a result, the Rice Canyon litigation involving or potentially involving Davey is now concluded.

Contingencies

We are party to a number of lawsuits, threatened lawsuits and other claims arising out of the normal course of business.

With respect to all such matters, we record an accrual for a loss contingency when it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. In addition, narrative information is provided for matters as to which management believes a material loss is reasonably possible.

Management assesses all such matters, including the matter described below, based on current information and makes judgments concerning their potential outcome, giving due consideration to the nature of the claim, the amount and nature of damages sought and the probability of success. Management's judgment is made subject to the known uncertainty of litigation and management's judgment as to estimates made may prove materially different from actual results.

California Fire Litigation: San Diego County--Davey Tree Surgery Company, a Davey subsidiary, and Davey Resource Group, a Davey division, along with the Company have previously been sued, together with a utility services customer, San Diego Gas & Electric ("SDG&E"), and its parent company, as defendants, and as cross-defendants in cross-complaints filed by SDG&E, in the Superior Court of the State of California in and for the County of San Diego, arising out of a wildfire in San Diego County that started on October 22, 2007, referred to as the Rice Canyon fire.

Numerous lawsuits related to the Rice Canyon fire were filed against SDG&E, its parent company, Sempra Energy, and Davey. The earliest of the lawsuits naming Davey was filed on April 18, 2008. The Court ordered that the lawsuits be organized into four groups based on type of plaintiff, namely insurance subrogation claimants, individual/business claimants, governmental claimants, and plaintiffs seeking class certification. Plaintiffs motions seeking class certification were denied and the orders denying class certification were affirmed on appeal. SDG&E filed cross-complaints against Davey for contractual indemnity, declaratory relief, and breach of contract.

During the third quarter 2012, Davey entered into a Settlement and Release Agreement (the “Agreement”) among Davey, SDG&E and Davey's insurers.

Under the Agreement (a) Davey paid SDG&E an amount previously expensed and accrued as self-insurance, (b) Davey's insurers paid SDG&E amounts under Davey's insurance policies in effect during the period of the Rice Canyon fire, and (c) SDG&E dismissed its cross-complaints against Davey and agreed to defend and hold harmless Davey from any and all claims that are currently asserted against Davey.

During 2013, the Master Complaint for the lawsuits brought by governmental entities was dismissed with prejudice. In the third quarter 2015, the Master Complaints for the lawsuits by insurers and individuals were dismissed with prejudice. As a result, the Rice Canyon litigation involving or potentially involving Davey is now concluded.