| The Company and Summary of Significant Accounting Policies | The Company and Summary of Significant Accounting Policies The Company We design, manufacture and sell a range of wireless networking solutions and services to mobile and fixed telephone service providers, private network operators, government agencies, transportation and utility companies, public safety agencies and broadcast system operators across the globe. Our products include broadband wireless access base stations and customer premises equipment for fixed and mobile, point-to-point digital microwave radio systems for access, backhaul, trunking and license-exempt applications, supporting new network deployments, network expansion, and capacity upgrades. We were incorporated in Delaware in 2006 to combine the businesses of Harris Corporation’s Microwave Communications Division (“MCD”) and Stratex Networks, Inc. (“Stratex”). On January 28, 2010, we changed our corporate name from Harris Stratex Networks, Inc. to Aviat Networks, Inc. (“the Company”, “Aviat Networks,” “Aviat”, “we,” “us,” and “our”) to more effectively reflect our business and communicate our brand identity to customers. Additionally, the change of our corporate name was to comply with the termination of the Harris Corporation (“Harris”) trademark licensing agreement resulting from the spin-off by Harris of its interest in our stock to its stockholders in May 2009. Basis of Presentation The consolidated financial statements include the accounts of Aviat Networks and its wholly-owned and majority owned subsidiaries. Significant intercompany transactions and accounts have been eliminated. Certain amounts in the prior-years consolidated financial statements have been reclassified to conform to the current-year presentation Our fiscal year ends on the Friday nearest June 30. This was June 30 for fiscal 2017, July 1 for fiscal 2016 and July 3 for fiscal 2015. Fiscal years 2017 and 2016 presented each included 52 weeks, and fiscal year 2015 included 53 weeks. In these notes to consolidated financial statements, we refer to our fiscal years as “fiscal 2017 ”, “fiscal 2016 ” and “fiscal 2015 .” Use of Estimates The preparation of consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) requires us to make estimates, assumptions and judgments affecting the amounts reported and related disclosures. Estimates are based upon historical factors, current circumstances and the experience and judgment of our management. We evaluate our estimates and assumptions on an ongoing basis and may employ outside experts to assist us in making these evaluations. Changes in such estimates, based on more accurate information, or different assumptions or conditions, may affect amounts reported in future periods. Such estimates affect significant items, including revenue recognition, provision for uncollectible receivables, inventory valuation, valuation allowances for deferred tax assets, uncertainties in income taxes, restructuring obligations, product warranty obligations, share-based awards, contingencies, recoverability of long-lived assets and useful lives of property, plant and equipment. Reverse Stock Split On June 14, 2016 , we effected a reverse stock split of all of the outstanding shares of our common stock at a ratio of 1-for-12 (“Reverse Stock Split”). The authorized shares of 300 million and par value per share of the common stock at $0.01 per share remain unchanged after the reverse stock split. All share and per-share data in our consolidated financial statements and applicable disclosures have been retroactively adjusted to reflect this reverse stock split. To reflect the reverse stock split on shareholders' equity, we reclassified an amount equal to the par value of the reduced shares from the common stock par value account to the additional paid in capital account, resulting in no net impact to shareholders' equity on our consolidated balance sheets. Cash, Cash Equivalents, Restricted Cash and Short-Term Investments We consider all highly liquid investments with an original maturity of three months or less at the date of purchase to be cash equivalents. Cash equivalents are carried at amortized cost, which approximates fair value due to the short-term nature of these investments. Investments with an original maturity of greater than three months and less than 12 months are accounted for as short-term investments and are classified as such at the time of purchase. We hold cash, cash equivalents and short-term investments at several major financial institutions, which often significantly exceed Federal Deposit Insurance Corporation insured limits. However, a substantial portion of the cash equivalents is invested in prime money market funds which are backed by the securities in the fund. Our short-term investments are comprised of time deposits and certificates of deposit. We classify our marketable securities as “available-for-sale” because we view our entire portfolio as available for use in our current operations. As of June 30, 2017 and July 1, 2016 , all of our high-quality marketable debt securities were invested in prime money market funds and were classified as cash equivalents except for $0.3 million and $0.2 million , respectively, in short-term investments. Cash and cash equivalents that are restricted as to withdrawal or usage under the terms of contractual agreements are recorded as restricted cash. At June 30, 2017 , our short-term restricted cash mainly included cash balances at one of our international subsidiaries. At July 1, 2016, our short-term restricted cash included $0.6 million of restricted cash in one of our Africa subsidiaries related to a severance amount paid to a former employee in the first quarter of fiscal 2017. We accrued the severance in restructuring liabilities as of July 1, 2016. Our long-term restricted cash included cash balance in our disability insurance voluntary plan account that cannot be used by us for any operating purposes other than to pay benefits to the insured employees and was recorded in other assets in our consolidated balance sheets and the corresponding liabilities were included in other long-term liabilities in our consolidated balance sheets. Significant Concentrations We typically invoice our customers for the sales order (or contract) value of the related products delivered at various milestones, including order receipt, shipment, installation and acceptance and for services when rendered. Our trade receivables are derived from sales to customers located in North America, Africa, Europe, the Middle East, Russia, Asia-Pacific and Latin America. Accounts receivable is presented net of allowance for estimated uncollectible accounts to reflect any loss anticipated on the collection of accounts receivable balances. We calculate the allowance based on our history of write-offs, level of past due accounts and the economic status of the customers. The fair value of our accounts receivable approximates their net realizable value. We regularly require letters of credit from some customers and, from time to time, we discount these letters of credit issued by customers through various financial institutions. The discounting of letters of credit depends on many factors, including the willingness of financial institutions to discount the letters of credit and the cost of such arrangements. Under these arrangements, collection risk is fully transferred to the financial institutions. We record the financing charges on discounting these letters of credit as interest expense. During fiscal 2017, 2016 and 2015 , we had one customer in Africa, Mobile Telephone Networks Group (“MTN Group”) that accounted for 14% , 18% and 14% , respectively, of our total revenue. A s of June 30, 2017 and July 1, 2016 , MTN Group accounted for approximately 26% and 22% , respectively, of our accounts receivable. As of July 1, 2016 , Motorola accounted for approximately 11% of our accounts receivable. No other customers accounted for more than 10% of our revenue or accounts receivable for the years presented. The loss of all business from MTN Group, Motorola, or any other significant customers, could adversely affect our results of operations, cash flows and financial position. Financial instruments that potentially subject us to a concentration of credit risk consist principally of cash equivalents, marketable debt securities, trade accounts receivable and financial instruments used in foreign currency hedging activities. We invest our excess cash primarily in prime money market funds and certificates of deposit. We are exposed to credit risks related to such instruments in the event of default or decrease in credit-worthiness of the issuers of the investments. We perform ongoing credit evaluations of our customers and generally do not require collateral on accounts receivable, as the majority of our customers are large, well-established companies. However, in certain circumstances, we may require letters of credit, additional guarantees or advance payments. We maintain allowances for collection losses, but historically have not experienced any significant losses related to any particular geographic area. Our customers are primarily in the telecommunications industry, so our accounts receivable are concentrated within one industry and exposed to concentrations of credit risk within that industry. Accounts receivable are written off when attempts to collect outstanding amounts have been exhausted or there are other indicators that the amounts are no longer collectible. We rely on third parties to manufacture our products and we purchase raw materials from third-party vendors. We outsource our manufacturing services to two independent manufacturers. In addition, we purchase certain strategic component inventory which is consigned to our third-party manufacturers. Other components included in our products are sourced from various suppliers and are principally industry standard parts and components that are available from multiple vendors. The inability of a contract manufacturer or supplier to fulfill our supply requirements or changes in their financial or business condition could disrupt our ability to supply quality products to our customers, and thereby may have a material adverse effect on our business and operating results. We have entered into agreements relating to our foreign currency contracts with Silicon Valley Bank, a multinational financial institution. The amounts subject to credit risk arising from the possible inability of any such parties to meet the terms of their contracts are generally limited to the amounts, if any, by which such party’s obligations exceed our obligations to that party. Inventories Inventories are valued at the lower of cost or market. Cost is determined using standard cost, which approximates actual cost on a weighted-average first-in-first-out basis. We regularly review inventory quantities on hand and record adjustments to reduce the cost of inventory for excess and obsolete inventory based primarily on our estimated forecast of product demand and production requirements. Inventory adjustments are measured as the difference between the cost of the inventory and estimated market value based upon assumptions about future demand and charged to the provision for inventory, which is a component of cost of sales. At the point of the loss recognition, a new, lower-cost basis for that inventory is established, and any subsequent improve ments in facts and circumstances do not result in the restoration or increase in that newly established cost basis. Customer Service Inventories Our customer service inventories are stated at the lower of cost or market. We carry service parts because we generally provide product warranty for 12 to 36 months and earn revenue by providing enhanced and extended warranty and repair service during and beyond this warranty period. Customer service inventories consist of both component parts, which are primarily used to repair defective units, and finished units, which are provided for customer use permanently or on a temporary basis while the defective unit is being repaired. We record adjustments to reduce the carrying value of customer service inventories to their net realizable value. Factors influencing these adjustments include product life cycles, end of service life plans and volume of enhanced or extended warranty service contracts. Estimates of net realizable value involve significant estimates and judgments about the future, and revisions would be required if these factors differ from our estimates. Property, Plant and Equipment Property, plant and equipment are stated on the basis of cost less accumulated depreciation and amortization. We capitalize costs of software, consulting services, hardware and other related costs incurred to purchase or develop internal-use software. We expense costs incurred during preliminary project assessment, re-engineering, training and application maintenance. Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the respective assets. Leasehold improvements are amortized on the straight-line method over the shorter of the remaining lease term or the estimated useful life of the improvements. The useful lives of the assets are generally as follows: Buildings 40 years Leasehold improvements 2 to 10 years Software 3 to 5 years Machinery and equipment 2 to 5 years Expenditures for maintenance and repairs are charged to expense as incurred. Cost and accumulated depreciation of assets sold or retired are removed from the respective property accounts, and any gain or loss is reflected in the consolidated statements of operations. Impairment of Long-Lived Assets We evaluate long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying value of an asset may not be recoverable. Impairment is considered to exist if the total estimated future cash flows on an undiscounted basis are less than the carrying amount of the assets. If impairment exists, the impairment loss is measured and recorded based on discounted estimated future cash flows. In estimating future cash flows, assets are grouped at the lowest levels for which there are identifiable cash flows that are largely independent of cash flows from other asset groups. Our estimate of future cash flows is based upon, among other things, certain assumptions about expected future operating performance, growth rates and other factors. The actual cash flows realized from these assets may vary significantly from our estimates due to increased competition, changes in technology, fluctuations in demand, consolidation of our customers, reductions in average selling prices and other factors. Assumptions underlying future cash flow estimates are therefore subject to significant risks and uncertainties. Warranties On product sales, we provide for future warranty costs upon product delivery. The specific terms and conditions of those warranties vary depending upon the product sold and country in which we do business. In the case of products sold by us, our warranties generally start from the delivery date and continue for one to three years, depending on the terms. Many of our products are manufactured to customer specifications and their acceptance is based on meeting those specifications. Factors that affect our warranty liabilities include the number of product units subject to warranty protection, historical experience and management’s judgment regarding anticipated rates of warranty claims and cost per claim. We assess the adequacy of our recorded warranty liabilities every quarter and make adjustments to the liabilities as necessary. Noncontrolling interests A noncontrolling interest represents the equity interest in a subsidiary that is not attributable, either directly or indirectly, to Aviat Networks and is reported as our equity, separately from our controlling interests. The noncontrolling interests relate to our ownership interest in a subsidiary company in South Africa with a local partner, where we are the majority owner at 51% . Revenues, expenses, gains, losses, net loss and other comprehensive income (loss) are reported in the consolidated financial statements at the consolidated amounts, which include the amounts attributable to both the controlling and noncontrolling interests. Operating Leases We lease facilities and equipment under various operating leases. These lease agreements generally include rent escalation clauses, and many include renewal periods at our option. We recognize expense for scheduled rent increases on a straight-line basis over the lease term beginning with the date we take possession of the leased space. Leasehold improvements made either at the inception of the lease or during the lease term are amortized over the current lease term, or estimated life, if shorter. Foreign Currency Translation The functional currency of our subsidiaries located in the United Kingdom, Singapore, Mexico, Algeria and New Zealand is the United States (“U.S.”) dollar. Determination of the functional currency is dependent upon the economic environment in which an entity operates as well as the customers and suppliers the entity conducts business with. Changes in facts and circumstances may occur which could lead to a change in the functional currency of that entity. Accordingly, all of the monetary assets and liabilities of these subsidiaries are re-measured into U.S. dollars at the current exchange rate as of the applicable balance sheet date, and all non-monetary assets and liabilities are re-measured at historical rates. Income and expenses are re-measured at the average exchange rate prevailing during the period. Gains and losses resulting from the re-measurement of these subsidiaries’ financial statements are included in the consolidated statements of operations. Our other international subsidiaries use their respective local currency as their functional currency. Assets and liabilities of these subsidiaries are translated at the local current exchange rates in effect at the balance sheet date, and income and expense accounts are translated at the average exchange rates during the period. The resulting translation adjustments are included in accumulated other comprehensive loss. Gains and losses resulting from foreign exchange transactions and revaluation of monetary assets and liabilities in non-functional currencies are included in either cost of product sales and services or other income (expense) in the accompanying consolidated statements of operations, based on the nature of the transactions. Net foreign exchange loss recorded in our consolidated statements of operations during fiscal 2017, 2016 and 2015 was as follows: Fiscal Year (In thousands) 2017 2016 2015 Amount included in costs of revenues $ (847 ) $ (556 ) $ (3,308 ) Amount included in other income (expense) 135 (1,245 ) — Total foreign exchange loss, net $ (712 ) $ (1,801 ) $ (3,308 ) Retirement Benefits As of June 30, 2017 , we provided retirement benefits to substantially all employees primarily through our defined contribution retirement plans. These plans have matching and savings elements. Contributions by us to these retirement plans are based on profits and employees’ savings with no other funding requirements. We halted making matching contributions to the U.S. plan from the second quarter of fiscal 2014 through the end of fiscal 2015. We resumed making contributions to the plans in fiscal 2016. Contributions to retirement plans are expensed as incurred. Retirement plan expense amounted to $1.8 million , $2.0 million and $1.7 million in fiscal 2017, 2016 and 2015 , respectively. Revenue Recognition We generate substantially all of our revenue from the sales or licensing of our microwave radio and wireless access systems, network management software, and professional services including installation, commissioning, maintenance and support services and training. Principal customers for our products and services include domestic and international wireless/mobile service providers, original equipment manufacturers, resellers, system integrators, as well as private network users such as public safety agencies, government institutions, and utility, pipeline, railroad and other industrial enterprises that operate broadband wireless networks. Our customers generally purchase a combination of our products and services as part of a multiple element arrangement. Our assessment of which revenue recognition guidance is appropriate to account for each element in an arrangement can involve significant judgment. Revenue from product sales is generated predominately from the sales of products manufactured by third-party manufacturers to whom we have outsourced our manufacturing processes. In general, printed circuit assemblies, mechanical housings, and packaged modules are manufactured by contract manufacturing partners, with periodic business reviews of material levels and obsolescence. Product assembly, product testing, complete system integration and system testing may either be performed within our own facilities or at the locations of our third-party manufacturers. Revenue from services includes certain installation, extended warranty, customer support, consulting, training and education. It also can include certain revenue generated from the resale of equipment purchased on behalf of customers for installation service contracts we perform for customers. Such equipment may include towers, antennas, and other related materials. Maintenance and support services are generally offered to our customers over a specified period of time and from sales and subsequent renewals of maintenance and support contracts. We recognize revenue when the earnings process is complete as evidenced by persuasive evidence of an arrangement, delivery has occurred, the sales price is fixed or determinable and collectability is reasonably assured. Revenue is recognized net of allowances for returns, discounts and any taxes collected from customers and subsequently remitted to governmental authorities. Delivery does not occur until products have been shipped or services have been provided to the customer, title and risk of loss has transferred to the customer, and (if applicable) either customer acceptance has been obtained or customer acceptance provisions have lapsed. The sales price is not considered to be fixed or determinable until all contingencies related to the sale have been resolved. Revenue from net product sales is recognized when title and risk of loss has transferred to the customer and there are no unfulfilled company obligations that affect the customer’s final acceptance of the arrangement. We recognize maintenance and support services revenue ratably over the maintenance or service period. Professional services revenue consists of fees we earn related to consulting and educational services. We recognize revenue from professional services as the services are performed or upon written acceptance from customers, if applicable, or acceptance provisions have lapsed assuming all other conditions for revenue recognition noted above have been met. We often enter into multiple contractual agreements with the same customer. Such agreements are reviewed to determine whether they should be evaluated as one arrangement. If an arrangement, other than a long-term contract, requires the delivery or performance of multiple deliverables or elements, we determine whether the individual elements represent “separate units of accounting”. Based on the terms and conditions of our typical product sales arrangement, we believe that our products and services can be accounted for as separate units because our products and services have value to our customers on a stand-alone basis. When a sale involves multiple deliverables, the entire fee from the arrangement is allocated to each unit of accounting based on the relative selling price of each deliverable. When applying the relative selling price method, the accounting principles establish a hierarchy to determine the selling price to be used for allocating revenue to deliverables as follows: (i) vendor-specific objective evidence (“VSOE”), (ii) third-party evidence of selling price (“TPE”) and (iii) best estimate of the selling price (“ESP”). Generally, we are not able to determine TPE because our go-to-market strategy differs from that of our peers and our offerings contain a significant level of differentiation such that the comparable pricing of products with similar functionality cannot be obtained. When we are unable to establish a selling price using VSOE or TPE, we use ESP to allocate the arrangement fees to the deliverables. Revenue allocated to each element is then recognized when the other revenue recognition criteria are met for each element. There is generally no customer right of return in our sales agreements. The sequence for typical multiple element arrangements: we deliver our products, perform installation services and then provide post-contract support services. ESP is determined by considering a number of factors including our pricing policies, internal costs and gross margin objectives, method of distribution, information gathered from experience in customer negotiations, market research and information, recent technological trends, competitive landscape and geographies. The determination of ESP is approved by our management taking into consideration our pricing strategy. We regularly review VSOE, TPE and ESP and maintain internal controls over the establishment and updating of these estimates. Revenues related to long-term contracts for customized network solutions are recognized using the percentage-of-completion method. In using the percentage-of-completion method, we generally apply the cost-to-cost method of accounting where sales and profits are recorded based on the ratio of costs incurred to estimated total costs at completion. Recognition of profit on long-term contracts requires estimates of the total contract value, the total cost at completion and the measurement of progress towards completion. Significant judgment is required when estimating total contract costs and progress to completion on the arrangements as well as whether a loss is expected to be incurred on the contract. If circumstances arise that change the original estimates of revenues, costs, or extent of progress toward completion, revisions to the estimates are made. These revisions may result in increases or decreases in estimated revenues or costs, and such revisions are reflected in income in the period in which the circumstances that gave rise to the revision become known by the company. We perform ongoing profitability analysis of our services contracts accounted for under the percentage-of-completion method in order to determine whether the latest estimates of revenues, costs and profits require updating. If at any time these estimates indicate that the contract will be unprofitable, the entire estimated loss for the remainder of the contract is recorded immediately. We establish billing terms at the time project deliverables and milestones are agreed. Revenues recognized in excess of the amounts invoiced to clients are classified as unbilled receivables in our consolidated balance sheets. We reserve for estimated product returns as an offset to revenue or deferred revenue based primarily on historical trends. Actual product returns may be different than what was estimated. These factors and unanticipated changes in the economic and industry environment could make actual results differ from our return estimates. We also consider whether contracts should be combined when specific aggregation criteria are met including when the contracts are in substance an arrangement to perform a single project with a customer; the contracts are negotiated as a package in the same economic environment with an overall profit objective; and the contracts require interrelated activities with common costs that cannot be separately identified with, or reasonably allocated to the elements, phases or units of output and the contracts are performed concurrently or in a continuous sequence under the same project management at the same location or at different locations in the same general vicinity. Cost of Product Sales and Services Cost of sales consists primarily of materials, labor and overhead costs incurred internally and amounts incurred for contract manufacturers to produce our products, personnel and other implementation costs incurred to install our products and train customer personnel, and customer service and third party original equipment manufacturer costs to provide continuing support to our customers. Shipping and handling costs are included as a component of costs of product sales in our consolidated statements of operations because they are also included in revenue that we bill our customers. Advertising Costs We expense all advertising costs as incurred. Advertising costs were immaterial during fiscal 2017, 2016 and 2015 . Presentation of Transactional Taxes Collected from Customers and Remitted to Government Authorities We present transactional taxes such as sales and use tax collected from customers and remitted to governmental authorities on a net basis. Research and Development Costs Our research and development costs, which include costs in connection with new product development, improvement of existing products, process improvement, and product use technologies, are charged to operations in the period in which they are incurred. Share-Based Compensation We estimate the grant date fair value of our share-based awards and amortize this fair value to compensation expense over the requisite service period or vesting term. To estimate the fair value of our stock option awards, we use the Black-Scholes option pricing model. The determination of the fair value of stock option awards on the date of grant using an option pricing model is affected by our stock price as well as assumptions regarding a number of complex and subjective variables. These variables include our expected stock price volatility over the expected term of the awards, actual and projected employee stock option exercise behaviors, risk-free interest rate and expected dividends. Due to the inherent limitations of option valuation models, including consideration of future events that are unpredictable and the estimation process utilized in determining the valuation of the share-based awards, the ultimate value realized by our employees may vary significantly from the amounts expensed in our financial statements. For restricted stock awards and units and performance share awards and units, we measure the grant date fair value based upon the market price of our common stock on the date of the grant. The fair value of each market-based stock unit with market conditions was estimated using the Monte-Carlo simulation model. We generally recognize compensation cost for share-based payment awards on a straight-line basis over the requisite service period. For an award that has a graded vesting schedule, compensation expense is recognized on a straight-line basis over the requisite service period for each separately vesting portion of the award as if the award was, in-substance, multiple awards. The amount of compensation cost recognized at any date must at least equal the portion of the grant-date value of the award that is vested at that date. For awards with a performance condition vesting feature, we recognize share-based compensation costs for the performance awards and units when achievement of the performance conditions is considered probable. Any previously recognized compensation cost would be reversed if the performance condition is not satisfied or if it is not probable that the performance conditions will be achieved. For awards with a market condition vesting feature, we recognize share-based compensation costs over the period the requisite service is rendered, regardless of when, if ever, the market condition is satisfied. During the fourth quarter of fiscal 2017, we adopted Accounting Standards Update (“ASU”) 2016-09 and elected to account for forfeitures as they occur. Refer to accounting standards adopted below for changes to the accounting for share-based compensation expense. Restructuring Charges Our restructuring charges represent expenses incurred in connection with certain cost reduction programs that we have implemented, and consisted of the costs of employee termination costs, lea |
