Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Principles of Consolidation and Basis of Presentation [Text Block]

Principles of Consolidation and Basis of Presentation--The consolidated financial statements include the accounts of Davey Tree and our wholly-owned subsidiaries and were prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). All significant intercompany accounts and transactions have been eliminated.

Use of Estimates in Financial Statement Preparation [Policy Text Block]

Use of Estimates in Financial Statement Preparation--The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect reported amounts. Estimates are used for, but not limited to, accounts receivable valuation, depreciable lives of fixed assets, self-insurance accruals, and revenue recognition. Actual results could differ from those estimates.

Property and Equipment [Policy Text Block]

Property and Equipment--Property and equipment are stated at cost. Repair and maintenance costs are expensed as incurred. Depreciation is computed for financial reporting purposes by the straight-line method for land improvements, building and leasehold improvements and by the declining-balance method for equipment, based on the estimated useful lives of the assets, as follows:

Land improvements	5 to 20 years
Buildings	5 to 20 years
Equipment	3 to 10 years
Leasehold improvements	Shorter of lease term or estimated useful life; ranging from 5-to-20 years

The amortization of assets acquired under capital leases is included in depreciation expense.

Intangible Assets [Policy Text Block]

Intangible Assets--Intangible assets with finite lives, primarily customer lists, noncompete agreements and tradenames, are amortized by the straight-line method based on their estimated useful lives, ranging from one-to-ten years.

Long-Lived Assets [Policy Text Block]

Long-Lived Assets--We assess potential impairment to our long-lived assets, other than goodwill, when there is evidence that events or changes in circumstances have made recovery of the asset’s carrying value unlikely and the carrying amount of the asset exceeds the estimated future undiscounted cash flow. In the event the assessment indicates that the carrying amounts may not be recoverable, an impairment loss would be recognized to reduce the asset’s carrying amount to its estimated fair value based on the present value of the estimated future cash flows.

Goodwill [Policy Text Block]

Goodwill--Goodwill is recorded when the cost of acquired businesses exceeds the fair value of the identified net assets acquired. Goodwill is not amortized, but tested for impairment annually or when events or circumstances indicate that impairment may have occurred. Annually, we perform the impairment tests for goodwill during the fourth quarter. Impairment of goodwill is tested at the reporting-unit level, which for us are also our business segments. Impairment of goodwill is tested by comparing the reporting unit’s carrying value, including goodwill, to the fair value of the reporting unit. The fair values of the reporting units are estimated using discounted projected cash flows. If the carrying value of the reporting unit exceeds its fair value, goodwill is considered impaired and a second step is performed to measure the amount of impairment loss, if any. We conducted our annual impairment tests and determined that no impairment loss was required to be recognized in 2012 or for any prior periods. There were no events or circumstances from the date of our assessment through December 31, 2012 that would impact this conclusion.

Self Insurance Accruals [Policy Text Block]

Self-Insurance Accruals--We are generally self-insured for losses and liabilities related primarily to workers’ compensation, vehicle liability and general liability claims. We use commercial insurance as a risk-reduction strategy to minimize catastrophic losses. Ultimate losses are accrued based upon estimates of the aggregate liability for claims incurred using certain actuarial assumptions followed in the insurance industry and based on Company-specific experience.

Our self-insurance accruals include claims for which the ultimate losses will develop over a period of years. Accordingly, our estimates of ultimate losses can change as claims mature. Our accruals also are affected by changes in the number of new claims incurred and claim severity. The methods for estimating the ultimate losses and the total cost of claims were determined by third-party consulting actuaries; the resulting accruals are reviewed by management, and any adjustments arising from changes in estimates are reflected in income.

The workers' compensation accruals are discounted as the amount and timing of cash payments related to those accruals are reliably determinable given the nature of workers' compensation benefits and the level of historical claim volume to support the actuarial assumptions and judgments used to derive the expected loss payment pattern. The workers' compensation accruals are discounted using an interest rate that approximates the long-term investment yields over the expected payment pattern of unpaid losses.

Our self-insurance accruals are based on estimates and, while we believe that the amounts accrued are adequate and not excessive, the ultimate claims may be in excess of or less than the amounts provided.

Stock-Based Compensation [Policy Text Block]

Stock-Based Compensation--Stock-based compensation cost for all share-based payment plans is measured at fair value on the date of grant and recognized over the employee service period on the straight-line recognition method for awards expected to vest. The fair value of all stock-based payment plans—stock option plans, stock-settled stock appreciation rights, and performance-based restricted stock units as well as our Employee Stock Purchase Plan—is determined by the number of awards granted and the price of our common stock. The fair value of each award is estimated on the date of grant using a binomial option-pricing model. The binomial model considers a range of assumptions related to volatility, risk-free interest rate and employee exercise behavior. Expected volatilities utilized in the binomial model are based on historical volatility of our share prices and other factors. Similarly, the dividend yield is based on historical experience and expected future changes. The binomial model also incorporates exercise and forfeiture assumptions based on an analysis of historical data. The expected life of the stock-based awards is derived from the output of the binomial model and represents the period of time that awards granted are expected to be outstanding.

Defined Benefit Pension Plans [Policy Text Block]

Defined Benefit Pension Plans--We record annual expenses relating to our defined benefit pension plans based on calculations that include various actuarial assumptions, including discount rates and expected long-term rates of return on plan assets. Actuarial assumptions are reviewed annually with modifications made to the assumptions, if necessary, based on current rates and trends. The effects of the actuarial gains or losses are amortized over future service periods. The funded status (that is, the projected benefit obligation less the fair value of plan assets) for each plan is reported in our balance sheet using a December 31 measurement date. Changes in the funded status of the plans are recognized in the year in which the changes occur and reported in comprehensive income (loss).

Income Taxes [Policy Text Block]

Income Taxes--We compute taxes on income in accordance with the tax rules and regulations where the income is earned. The income tax rates imposed by these taxing authorities vary. Taxable income may differ from pretax income for financial reporting purposes. We compute and recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts and the tax bases of our assets and liabilities. Changes in tax rates and laws are reflected in income in the period when such changes are enacted. We account for uncertain tax positions by recognizing the financial statement effects of a tax position only when, based upon the technical merits, it is more-likely-than-not that the position will be sustained upon examination.

Earnings Per Share [Policy Text Block]

Earnings Per Share--Basic earnings per share is determined by dividing the income available to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per share is computed similarly to basic earnings per share except that the weighted-average number of shares is increased to include the effect of stock awards that were granted and outstanding during the period.

Revenue Recognition [Policy Text Block]

Revenue Recognition--Revenues from residential and commercial services are recognized as the services are provided and amounts are determined to be collectible. Revenues from contractual arrangements, primarily with utility services customers, are recognized based on costs incurred to total estimated contract costs. During the performance of such contracts, estimated final contract prices and costs are periodically reviewed and revisions are made, as required, to the revenue recognized. On cost-plus-fee contracts, revenue is recognized to the extent of costs incurred plus a proportionate amount of fees earned, and on time-and-material contracts, revenue is recognized to the extent of billable rates times hours worked, plus material and other reimbursable costs incurred. Revisions arise in the normal course of providing services to utility services customers and generally relate to changes in contract specifications and cost allowability. Such revisions are recorded when realization is probable and can be reliably estimated.

Concentration of Credit Risk [Policy Text Block]

Concentration of Credit Risk--Credit risk represents the accounting loss that would be recognized if the counterparties failed to perform as contracted. The principal financial instruments subject to credit risk follow:

Cash and Derivative Contracts: To limit our exposure, we transact our business and maintain banking relationships and our derivative contracts with high credit-quality financial institutions.

Accounts Receivable: Our residential and commercial customers are located geographically throughout the United States and Canada and, as to commercial customers, within differing industries; thus, minimizing credit risk. The credit exposure of utility services customers is directly affected by conditions within the utility industries as well as the financial condition of individual customers. One utility services customer approximated 10% of revenues during 2012 and 2011 and 11% during 2010. To reduce credit risk, we evaluate the credit of customers, but generally do not require advance payments or collateral. Exposure to losses on receivables is principally dependent on each customer’s financial condition.

Currency Translation Adjustments [Policy Text Block]

Currency Translation Adjustments--All assets and liabilities of our Canadian operations are translated into United States dollars at year-end exchange rates while revenues and expenses are translated at weighted-average exchange rates in effect during the year. Translation adjustments are recorded as accumulated other comprehensive income (loss) in shareholders’ equity.

Interst Rate Risk Management [Policy Text Block]

Interest Rate Risk Management--We have entered into interest rate contracts, from time-to-time, with the objective of altering interest rate exposures related to variable rate debt. In the interest rate contracts, we have agreed with a financial institution to exchange, at specified intervals, the difference between fixed and floating interest amounts calculated on an agreed-upon notional principal amount.

Comprehensive Income (Loss) [Policy Text Block]

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Major Customers, Policy [Policy Text Block]

One utility services customer approximated 10% of revenues during 2012 and 2011 and 11% during 2010.

Business Combinations Policy [Policy Text Block]

The net assets of the businesses acquired are accounted for under the acquisition method and were recorded at their fair values at the dates of acquisition.

Commitments and Contingencies, Policy [Policy Text Block]

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 has assessed all such matters, including the matter described below, based on current information and made a judgment 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.