Summary of Significant Accounting Policies (Policies)

12 Months Ended

Sep. 30, 2017

Principles of Consolidation: Our consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) and include the assets, liabilities, shareholders' equity, and operating results of the Company and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. We are not the primary beneficiary of, nor do we hold a significant variable interest in, any variable interest entity.

Use of Estimates

Use of Estimates: The preparation of consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities, as of the date of the financial statements, and the reported amounts of revenue and expenses during the reported period. The accounting estimates that require our most significant, difficult, and/or subjective judgments include:


•	the valuation of inventory and stock-based compensation;


•	the useful lives of assets and assessment of recovery of long-lived assets;


•	asset retirement obligations and contingencies, including litigation and indemnification-related;


•	the allowance for doubtful accounts and warranty accruals; and,


•	the valuation allowance for deferred tax assets.

We develop estimates based on historical experience and on various assumptions about the future that are believed to be reasonable based on the best information available to us. Our reported financial position or results of operations may be materially different under changed conditions or when using different estimates and assumptions, particularly with respect to significant accounting policies. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in subsequent periods to reflect more current information.

Concentration of Credit Risk

Concentration of Credit Risk: Financial instruments that may subject us to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. Our cash and cash equivalents are held in safekeeping primarily with Wells Fargo. When necessary, we perform credit evaluations on our customers' financial condition and occasionally we request deposits in advance of shipping product to our customers. These financial evaluations require significant judgment and are based on a variety of factors including, but not limited to, current economic trends, historical payment patterns, bad debt write-off experience, and financial review of the particular customer.

Cash and Cash Equivalents

Cash and Cash Equivalents: Cash and cash equivalents consists primarily of bank deposits and highly liquid short-term investments with a maturity of three months or less at the time of purchase.

Cash consists primarily of bank deposits or highly liquid short-term investments with a maturity of three months or less at the time of purchase.

Restricted Cash

Restricted Cash: Restricted cash represents recently deposited cash that is temporarily restricted by our bank in accordance with the terms of the outstanding credit facility.

Restricted cash represents temporarily restricted deposits held as compensating balances against short-term borrowing arrangements.

Accounts Receivable

Accounts Receivable: We regularly evaluate the collectability of our accounts receivable and maintain allowances for doubtful accounts for estimated losses resulting from the inability of our customers to meet their financial obligations to us. The allowance is based on the age of receivables and a specific identification of receivables considered at risk of collection. We classify charges associated with the allowance for doubtful accounts as selling, general, and administrative expense.

Inventory

Inventory: Inventory is stated at the lower of cost or market (first-in, first-out). Inventory that is expected to be used within the next 12 months is classified as current inventory. We write-down inventory once it has been determined that conditions exist that may not allow the inventory to be sold for its intended purpose or the inventory is determined to be excess or obsolete based on assumptions about future demand and market conditions. The charge related to inventory write-downs is recorded as a cost of revenue. We evaluate inventory levels at least quarterly against sales forecasts on a significant part-by-part basis, in addition to determining its overall inventory risk. We have incurred, and may in the future incur charges to write-down our inventory. See Note 8 - Inventory in the notes to the consolidated financial statements for additional information related to our inventory.

Property, Plant and Equipment

Property, Plant, and Equipment: Our property, plant, and equipment are recorded at cost. Plant and equipment are depreciated on a straight-line basis over the following estimated useful lives of the assets:



Estimated Useful Life
Equipment		three to ten years
Furniture and fixtures		five years
Computer hardware and software		five to seven years
Leasehold improvements		three to six years

Leasehold improvements are amortized over the lesser of the asset life or the lease term. Expenditures for repairs and maintenance are charged to expense as incurred. The costs for major renewals and improvements are capitalized and depreciated over their estimated useful lives of the related asset. The cost and related accumulated depreciation of the assets are removed from the accounts upon disposition and any resulting gain or loss is reflected in the consolidated statement of operations and comprehensive income.

Valuation of Long-lived Assets

Valuation of Long-lived Assets: Long-lived assets consist primarily of property, plant, and equipment, net. Since our long-lived assets are subject to amortization, we review these assets for impairment in accordance with the provisions of Accounting Standards Codification ("ASC") 360, Property, Plant, and Equipment. We review long-lived assets for impairment whenever events or changes in circumstances indicate that its carrying amount may not be recoverable. Our impairment testing of long-lived assets consists of determining whether the carrying amount of the long-lived asset (asset group) is recoverable, in other words, whether the sum of the future undiscounted cash flows expected to result from the use and eventual disposition of the asset (asset group) exceeds its carrying amount. The determination of the existence of impairment involves judgments that are subjective in nature and may require the use of estimates in forecasting future results and cash flows related to an asset or group of assets. In making this determination, we use certain assumptions, including estimates of future cash flows expected to be generated by these assets, which are based on additional assumptions such as asset utilization, the length of service that assets will be used in our operations, and estimated salvage values.

Asset Retirement and Environment Obligation

Asset Retirement and Environmental Obligations: Pursuant to ASC 410, Asset Retirement and Environmental Obligations, an asset retirement obligation (“ARO” or “AROs”) is recorded when there is a legal obligation associated with the retirement of a tangible long-lived asset and the fair value of the liability can reasonably be estimated. Upon initial recognition of an asset retirement obligation, a company increases the carrying amount of the long-lived asset by the same amount as the liability. Over time, the liabilities are accreted for the change in their present value through charges to operations costs. The initial capitalized costs are depleted over the useful lives of the related assets through charges to depreciation, and/or amortization. If the fair value of the estimated ARO changes, an adjustment is recorded to both the ARO and the asset retirement cost. Revisions in estimated liabilities can result from revisions of estimated inflation rates, escalating retirement costs, and changes in the estimated timing of settling ARO liabilities.

We have known asset retirement conditions, such as certain asset decommissioning and restoration of rented facilities to be performed in the future.

Asset Retirement Obligation: The Company recognizes its estimate of the fair value of its ARO in the period incurred in long-term liabilities. The fair value of the ARO is also capitalized as property, plant and equipment.

Fair Value of Financial Instruments

Fair Value of Financial Instruments: We determine the fair value of our financial instruments in accordance with ASC 820, Fair Value Measurements and Disclosures.

ASC Topic 820 (“ASC 820”), Fair Value Measurements, establishes a valuation hierarchy for disclosure of the inputs to valuation techniques used to measure fair value. This standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value:


•	Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities.


•	Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the assets or liabilities, either directly or indirectly, through market corroboration, for substantially the full term of the financial instrument.


•	Level 3 inputs are unobservable inputs based on our own assumptions used to measure assets or liabilities at fair value.

Classification of an asset or liability within this hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

Valuation techniques used to measure fair value under ASC 820 must maximize the use of observable inputs and minimize the use of unobservable inputs.

Revenue Recognition

Revenue Recognition: Revenue is recognized upon shipment, provided persuasive evidence of a contract exists, the price is fixed, the product meets our customer's specifications, title and ownership have transferred to the customer, and there is reasonable assurance of collection of the sales proceeds. The majority of our products have shipping terms that are free on board or free carrier alongside (“FCA”) shipping point, which means that we fulfill our delivery obligation when the goods are handed over to the freight carrier at our shipping dock. This means the customer bears all costs and risks of loss or damage to the goods from that point. We account for shipping and related transportation costs by recording the charges that are invoiced to customers as revenue, with the corresponding cost recorded as cost of revenue. In those instances where inventory is maintained at a consigned location, revenue is recognized only when our customer pulls product for use and after title and ownership has transferred to the customer. Any warranty cost and remaining obligations that are inconsequential or perfunctory are accrued when the corresponding revenue is recognized.

Distributors: We use a number of distributors around the world and recognize revenue upon shipment of product to these distributors. Title and risk of loss pass to the distributors upon shipment, and our distributors are contractually obligated to pay us on standard commercial terms, just like direct customers. We do not sell to our distributors on consignment and, except in the event of product discontinuance, do not give distributors a right of return.

Contract Manufacturers: Prior to certain customers accepting product that is manufactured at one of our contract manufacturers, these customers require that they first qualify the product and manufacturing processes at our contract manufacturer. The customers' qualification process determines whether the product manufactured at our contract manufacturer achieves their quality, performance, and reliability standards. After a customer completes the initial qualification process, we receive approval to ship qualified product to that customer. As part of the manufacturing process at our contract manufacturers, the finished product is tested prior to shipment to the customer using the same criteria that our customer uses to test product it receives. Revenue is recognized upon shipment of customer-qualified product, provided persuasive evidence of a contract exists, the price is fixed, the product meets our customer's specifications, title and ownership have transferred to the customer, and there is reasonable assurance of collection of the sales proceeds.

Product Warranty Reserves

Product Warranty Reserves: We provide our customers with limited rights of return for non-conforming shipments and warranty claims for certain products. Pursuant to ASC 450, Contingencies, we make estimates of product warranty expense using historical experience rates as a percentage of revenue and accrue estimated warranty expense as a cost of revenue. We estimate the costs of our warranty obligations based on historical experience of known product failure rates and anticipated rates of warranty claims, use of materials to repair or replace defective products, and service delivery costs incurred in correcting product issues. In addition, from time to time, specific warranty accruals may be made if unforeseen technical problems arise. Should our actual experience relative to these factors differ from our estimates, we may be required to record additional warranty reserves. Alternatively, if we provide more reserves than needed, we may reverse a portion of such provisions in future periods.

Litigation Contingencies

Litigation Contingencies: We are subject to various legal proceedings, claims, and litigation, either asserted or unasserted that arise in the ordinary course of business. Professional legal fees are expensed when incurred. We accrue for contingent losses when such losses are probable and reasonably estimable. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in subsequent periods to reflect more current information. Should we fail to prevail in any legal matter or should several legal matters be resolved against the Company in the same reporting period, then the financial results of that particular reporting period could be materially affected.

Research and Development

Research and Development: Research and development costs are charged as an expense when incurred.

Stock-Based Compensation

Stock-Based Compensation: Stock-based compensation expense is measured at the stock option or award grant date, based on the fair value of the award, and is recorded to cost of revenue, sales, general, and administrative, and research and development expense based on an employee's responsibility and function over the requisite service period. We use the Black-Scholes option-pricing model or the Monte-Carlo lattice model and the straight-line attribution approach to determine the fair value of stock-based awards in accordance with ASU 2016-09, Compensation. These option-pricing models require the input of highly subjective assumptions, including the option's expected life, the expected volatility of the price of the Company’s common stock, risk-free interest rates and the expected dividend yield of the Company’s common stock. Stock-based compensation expense is reduced for forfeitures.

During fiscal year 2017, the Company early adopted Accounting Standards Update (“ASU”) 2016-09. ASU 2016-09 introduces targeted amendments intended to simplify the accounting for stock compensation, including the Company's election to eliminate the requirements to estimate the number of awards that are expected to vest, and instead, account for forfeitures when they occur. The new standard requires the change be adopted using the modified retrospective approach. As such, the Company recorded a cumulative-effect adjustment of $0.2 million to decrease the September 30, 2016 accumulated deficit and common stock balances.

Foreign Exchange

Foreign Exchange: We recognize gains and losses due to the effect of exchange rate changes on foreign currency primarily due to our operations in China. The assets and liabilities of our foreign operations are translated from their respective functional currencies into U.S. dollars at the rates in effect at the consolidated balance sheet dates, and the revenue and expense amounts are translated at the average rate during the applicable periods reflected on the consolidated statements of operations and comprehensive income. Foreign currency translation adjustments are recorded as other comprehensive income. Gains and losses from foreign currency transactions denominated in currencies other than the U.S. dollar, both realized and unrealized, are recorded as foreign exchange (loss) gain on our consolidated statements of operations and comprehensive income.

Income Taxes

Income Taxes: In accordance with ASC 740, Income Taxes, deferred tax assets and liabilities are recognized for the expected tax consequences of temporary differences between the tax bases of assets and liabilities and their reported amounts. We record valuation allowances against all deferred tax assets for amounts which are not considered more likely to be realized.

Comprehensive Income

Comprehensive Income: ASC 220, Comprehensive Income, establishes standards for reporting and display of comprehensive income and its components in financial statements. It requires that all items that are required to be recognized under accounting standards as components of comprehensive income be reported in the financial statement that is displayed with the same prominence as other financial statements. Our comprehensive income consists of both net income and foreign currency translation adjustments and it is presented in the accompanying consolidated statements of operations and comprehensive income.

Income (Loss) Per Share

Income (Loss) Per Share: We are required, in periods in which we have net income, to calculate basic and diluted income per share using the two-class method. The two-class method is required because our unvested restricted stock awards are considered participating securities as these securities have the right to receive dividends or dividend equivalents should we declare dividends on our common stock. Under the two-class method, during periods of net income, net income is first reduced for distributions declared on all classes of securities to arrive at undistributed earnings. The undistributed earnings are then allocated on a pro-rata basis between the common shareholders and participating securities holders. The weighted-average number of common shares and participating securities outstanding during the period is then used to calculate basic and diluted income per share.

In periods in which we have a net loss, basic loss per share is calculated by dividing the loss attributable to common shareholders by the weighted-average number of common shares outstanding during the period.

Recent Accounting Pronouncements

There have been no recent accounting pronouncements or changes in accounting pronouncements that are of significance, or of potential significance, to us other than those discussed below:

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In May 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-09, Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting. ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. The new guidance is intended to reduce diversity in practice and result in fewer changes to the terms of an award being accounted for as a modification. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if the award’s fair value, vesting conditions and classification as an equity or liability instrument are the same immediately before and after the change. ASU 2017-09 will be applied prospectively to awards modified on or after the adoption date. The new guidance is effective for annual periods, beginning after December 15, 2017 and interim periods within those annual periods. The Company does not expect the adoption of ASU 2017-09 will have a material impact on the Company’s consolidated financial statements.

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In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash (ASU 2016-18), which provides amendments to current guidance to address the classification and presentation of changes in restricted cash or restricted cash equivalents. Specifically, there is no guidance to address how to classify and present changes in restricted cash or restricted cash equivalents that occur when there are transfers between cash, cash equivalents and restricted cash or restricted cash equivalents and when there are direct cash receipts into restricted cash or restricted cash equivalents. The new guidance is effective for annual periods beginning after December 15, 2017 and interim periods within those annual periods. Early adoption is permitted. This standard requires the use of the retrospective transition method. The Company early adopted ASU 2016-18 at the beginning of fiscal year 2017. Accordingly, for the fiscal years ended September 30, 2017, 2016 and 2015, the Company reclassified restricted cash to be presented with cash and cash equivalents on the consolidated statements of cash flows in the amount of $0.4 million, $1.0 million and $0.4 million, respectively.

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In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which clarifies how companies present and classify certain cash receipts and cash payments in the statement of cash flows. This guidance is effective for fiscal years beginning after December 15, 2017. Early adoption is permitted. The Company early adopted ASU 2016-15 at the beginning of fiscal year 2017, but there was no impact on our Consolidated Financial Statements.

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In March 2016, the FASB issued ASU 2016-09, Compensation-Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This guidance is effective for annual periods beginning after December 15, 2016, and interim periods, within those annual periods. Early adoption is permitted. During fiscal year 2017, the Company early adopted ASU 2016-09. ASU 2016-09 introduces targeted amendments intended to simplify the accounting for stock compensation, including the Company's election to eliminate the requirements to estimate the number of awards that are expected to vest, and instead, account for forfeitures when they occur. The new standard requires the change be adopted using the modified retrospective approach. As such, the Company recorded a cumulative-effect adjustment of $0.2 million to decrease the September 30, 2016 accumulated deficit and common stock balances.

The ASU also requires income tax benefits and deficiencies to be recognized as income tax expense or benefit in the income statement and the tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. The income tax consequences of the new standard did not have an impact on the consolidated financial statements. Excess tax benefits should be classified along with other income tax cash flows as an operating activity. The new standard also generally requires presentation of cash paid by the employer for employee taxes as a financing activity. The Company has historically not withheld shares from employees for any of their share-based payment awards, and thus, the new standard did not have an impact on the consolidated statement of cash flows.

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In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). ASU 2016-02 introduces a lessee model that requires recognition of assets and liabilities arising from qualified leases on the consolidated balance sheets and disclosure of qualitative and quantitative information about lease transactions. This guidance is effective for fiscal years beginning after December 15, 2018 and interim periods within those years. The new standard will be effective for our fiscal year beginning October 1, 2019 and early adoption is permitted.

This update will be applied using a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company anticipates taking advantage of the practical expedient option. The operating lease obligations at September 30, 2017 were approximately $4.3 million. Assuming an average discounted rate of 4% applied to these minimum remaining rental payments, we estimate that the impact to our balance sheet upon adoption would be within the range of $1.8 million to $2.8 million due to recognition of the right-of-use asset and lease liability related to current operating leases. The Company is continuing to evaluate the effect of this update on its consolidated financial statements and related disclosures.

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In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330): Simplifying the Measurement of Inventory. This standard requires inventory to be measured at the lower of cost and net realizable value. The guidance clarifies that net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This guidance is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. The new standard will be effective for our fiscal year beginning October 1, 2017 and early adoption is permitted. We are currently evaluating the impact of this accounting standard update on our consolidated financial statements.

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In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers which will supersede most current U.S. GAAP guidance on this topic. In April 2016, the FASB issued ASU No. 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing to clarify two aspects of the guidance within ASU No. 2014-09 on identifying performance obligations and the licensing implementation guidance. Under the new standards, recognition of revenue occurs when the seller satisfies a performance obligation by transferring to the customer promised goods or services in an amount that reflects the consideration the entity expects to receive for those goods or services. The new standard, as amended through December 2016, will be effective for our fiscal year beginning October 1, 2018 and early adoption is permitted as of October 1, 2017. The standard permits the use of either the retrospective or cumulative effect transition method. We have established a cross-functional coordinated implementation team to implement ASU 2014-09. We are in the process of identifying and implementing changes to our systems, processes and internal controls to meet the reporting and disclosure requirements.

Upon evaluation, we believe that the key revenue streams will be split between product sales and firm fixed price contracts, which comprise the majority of our business. Based upon the evaluation completed to date, the Company believes that the pattern of revenue recognition for these revenue streams will generally be at a point-in-time for product sales and over a period of time for firm fixed price contracts, which is consistent with current guidance. The Company does not believe the adoption of ASU 2014-09 will have a material impact on the Company’s financial statements and related disclosures. As of September 30, 2017, the Company intends to adopt ASU 2014-09 utilizing a fully retrospective transition approach on October 1, 2018.

Receivables

The allowance for doubtful accounts is based on the age of receivables and a specific identification of receivables considered at risk of collection.

Expense related to severance and restructuring accruals is included in selling, general, and administrative expense on our statements of operations and comprehensive income.

Professional Legal Fees

Professional legal fees are expensed when incurred. We accrue for contingent losses when such losses are probable and reasonably estimable.

Segment Reporting

We evaluate our reportable segment pursuant to ASC 280, Segment Reporting. The Company's Chief Executive Officer is the chief operating decision maker and he assesses the performance of the operating segment and allocates resources to the segment based on its business prospects, competitive factors, net revenue, operating results, and other non-U.S. GAAP financial ratios. Based on this evaluation, the Company operates as a single reportable segment.