Summary of Significant Accounting Policies

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”) as codified in the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC"). Intercompany accounts and transactions have been eliminated in consolidation.

Per Common Share Information--We have given retroactive consideration to the two-for-one stock split of our common shares effective June 1, 2017 including all common share and per share data.

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, stock valuation and revenue recognition. Actual results could differ from those estimates.

The Company’s fiscal quarters each contain thirteen operating weeks, with the exception of the fourth quarter of a 53-week fiscal year, which contains fourteen operating weeks.

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

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.


B.	Summary of Significant Accounting Policies (continued)

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--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 an impairment loss should be recognized for the amount by which the carrying amount exceeds the reporting unit’s fair value, not to exceed the carrying value of the goodwill allocated to that reporting unit. We conducted our annual impairment tests and determined that no impairment loss was required to be recognized in 2018 or for any prior periods. There were no events or circumstances from the date of our assessment through December 31, 2018 that would impact this conclusion.

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--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 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--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


B.	Summary of Significant Accounting Policies (continued)

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--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--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--We recognize revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers, which we adopted on January 1, 2018, using the modified retrospective method. See Note C for further discussion of the adoption, including the impact on our 2018 financial statements. Performance obligations are satisfied as our services are provided to customers. See Note T for a detailed description of our revenue recognition policy.

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--To limit our exposure, we transact our business and maintain banking relationships 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 customer approximated 12% of revenues during 2018, 11% in 2017 and 12% in 2016. 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.

Foreign Currency Translation and Transactions--Assets and liabilities of our Canadian operations are translated into U.S. dollars using year-end exchange rates, and revenues and expenses are translated using exchange rates as determined throughout the year. Gains or losses resulting from translation are included in the consolidated balance sheet, classified in shareholders’ equity as a separate component of accumulated other comprehensive income (loss). Gains or losses resulting from Canadian-dollar transactions with the Canadian operations are converted to U.S. dollars at the rates of exchange prevailing at the dates of the transactions. The effect of the transactions gain or loss is classified in the statement of operations as a component of other nonoperating income (expense), net.

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. During the year ended December 31, 2018, we did not enter into any interest rate contracts.


B.	Summary of Significant Accounting Policies (continued)

Comprehensive Income (Loss)--Comprehensive income (loss) includes net income and other comprehensive income or loss. Other comprehensive income (loss) refers to revenues, expenses, gains and losses that under U.S. GAAP are included in comprehensive income but are excluded from net income as these amounts are recorded directly as an adjustment to shareholders’ equity, net of tax.