Our quarterly financial periods end on the Friday closest to the last day of the calendar quarter (March 31, 2017 for the first quarter of 2017 and April 1, 2016 for the first quarter of 2016), except for the last quarter of the fiscal year, which ends on December 31. For ease of presentation, the quarterly financial statements included herein are described as three months ended.

The unaudited interim Condensed Consolidated Financial Statements of Vectrus have been prepared pursuant to the rules and regulations of the U.S. Securities and Exchange Commission. Accordingly, certain information and footnote disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the U.S. (GAAP) have been omitted. These unaudited interim condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements and notes included in our Annual Report on Form 10-K for the year ended December 31, 2016.

It is management’s opinion that these financial statements include all normal and recurring adjustments necessary for a fair presentation of the Company’s financial position and operating results. Net sales and net earnings for any interim period are not necessarily indicative of future or annual results.

As a defense contractor engaging in long-term contracts, the majority of our revenue is derived from long-term service contracts for which revenue is recognized under the percentage-of-completion method based on levels of effort or percentage of costs incurred to total costs. For levels of effort, revenue and profits are recognized based upon the ratio of actual services delivered to estimated total services to be delivered under the contract. Under the cost-to-total cost method, revenue is recognized based upon the ratio of costs incurred to estimated total costs at completion. Revenue under cost-reimbursable contracts is recorded as costs are incurred and includes estimated earned fees or profits calculated on the basis of the relationship between costs incurred and total estimated costs. Revenue and profits on time-and-material type contracts are recognized based on billable rates multiplied by direct labor hours incurred plus material and other reimbursable costs incurred. The completed-contract method is utilized when reasonable and reliable cost estimates for a project cannot be made. Amounts invoiced to customers in excess of revenue recognized are recorded as deferred revenue, until the revenue recognition criteria are satisfied, and are recorded as billings in excess of costs in the accompanying Condensed Consolidated Balance Sheets. Revenue that is earned and recognized in excess of amounts invoiced is recorded as a component of receivables.

During the performance of our long-term contracts, estimated final contract prices and costs are reviewed periodically and changes are made as required and recorded as changes in revenue and cost of revenue in the period in which they are determined. Additionally, the fees under certain contracts may be increased or decreased in accordance with cost or performance incentive provisions, which measure actual performance against established targets or other criteria. Such incentive fee awards or penalties are included in revenue when there is sufficient information to reasonably assess anticipated contract performance. Amounts representing contract change orders, claims, requests for equitable adjustment, or limitations in funding on contracts are recorded only if it is probable the claim will result in additional contract revenue and the amounts can be reliably estimated.

Changes in contract revenue and cost estimates and the related effect to operating income are recognized using a cumulative catch-up adjustment, which recognizes in the current period the cumulative effect of the changes on current and prior periods based on a contract’s percentage of completion. Changes in estimated revenue and cost could result in a forward loss or an adjustment to a forward loss. Provisions for estimated losses on uncompleted long-term contracts are made in the period in which such losses are determined and are recorded as a component of cost of revenue.

Derivative instruments are recognized as either an asset or liability at fair value in our Condensed Consolidated Balance Sheets and are classified as current or long-term based on the scheduled maturity of the instrument. Our derivative instruments have been formally designated and qualify as part of a cash flow hedging relationship under applicable accounting standards.

The derivative instruments are adjusted to fair value through accumulated other comprehensive income (loss). If we were to determine that a derivative was no longer highly effective as a hedge, we would discontinue the hedge accounting prospectively. Gains or losses would be immediately reclassified from accumulated other comprehensive income (loss) to earnings relating to hedged forecasted transactions that are no longer probable of occurring. Gains or losses relating to terminations of effective cash flow hedges in which the forecasted transactions would still be probable of occurring would be deferred and recognized consistent with the income or loss recognition of the underlying hedged item.