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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Sep. 30, 2023
Accounting Policies [Abstract] |
Principles of Consolidation | Principles of ConsolidationThe consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation. Certain reclassifications have been made to the prior year's consolidated financial statements to conform to the current year presentation.
Accounting Estimates | Accounting Estimates The preparation of the consolidated financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts in the consolidated financial statements and accompanying notes. Actual results could differ significantly from those estimates.
Cash Equivalents | Cash and Cash Equivalents Cash equivalents consist of money market accounts and other highly liquid investments purchased with an original maturity of three months or less. The carrying amounts approximate fair value due to the short maturities of these investments. We maintain our cash and cash equivalents in bank accounts which may exceed federally insured limits at times. We have not experienced any losses in these accounts.
Accounts Receivable | Accounts Receivable Accounts receivable are stated at the amount we expect to collect. This amount is net of an allowance for credit losses for estimated losses resulting from the inability of our customers to make required payments and a reserve for future credit returns and pricing adjustments. The following factors are considered when determining the collectability of specific customer accounts: customer creditworthiness, past transaction history with the customer, and changes in customer payment terms or practices. In addition, overall historical collection experience, current economic industry trends, and a review of the current status of trade accounts receivable are considered when determining the required allowance for credit losses. Based on our assessment, we provide for estimated uncollectible amounts through a charge to earnings and a credit to our allowance for credit losses. Balances that remain outstanding after we have used reasonable collection efforts are written off through a charge to the allowance for credit losses and a credit to accounts receivable. Estimated reserves for future credit returns and pricing adjustments are established based on an analysis of historical patterns of credit returns and price adjustments compared to received credit returns and distribution sales for the current period. Estimated reserves for future credit returns and price adjustments are charged against revenue in the same period as the corresponding sales are recorded. Estimated sales returns for our distributor stock rotation program are accounted for under the guidance of Accounting Standard Codification ("ASC") 845 Nonmonetary Transactions. The following table presents a reconciliation of the allowance for credit losses (in thousands):
|  | Year ended September 30,
|  | 2023 |  | 2022
Balance at beginning of period |  | $ | 3,285 |  |  | $ | 3,934 |
Additions |  | 1,134 |  |  | 1,475 |
Uncollectible accounts charged to allowance, net of recoveries |  | (2,726) |  |  | (2,124) |
Balance at end of period |  | $ | 1,693 |  |  | $ | 3,285 |
Inventories | InventoriesInventories are valued at the lower of cost or net realizable value using the first-in, first-out ("FIFO") method. Appropriate consideration is given to deterioration, obsolescence and other factors in evaluating net realizable value.
Property, Equipment and Improvements, Net | Property, Equipment and Improvements, Net Property, equipment and improvements are carried at cost, net of accumulated depreciation. Depreciation is provided by charges to operations using the straight-line method over the estimated asset useful lives. Furniture and fixtures, purchased software and other equipment are depreciated over a period of three years to ten years. Building improvements and buildings are depreciated over ten years and 39 years, respectively. Leasehold improvements are depreciated over the shorter of the lease term or the estimated useful life of the asset. Long-lived assets to be held and used, such as property, equipment and improvements, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. Expenditures for maintenance and repairs are charged to operations as incurred, while major renewals and betterments are capitalized. The assets and related accumulated depreciation accounts are adjusted for asset retirements and disposals with the resulting gain or loss included in operations.
Identifiable Intangible Assets | Identifiable Intangible Assets Purchased proven technology, license agreements, covenants not to compete and other identifiable intangible assets are recorded at fair value when acquired in a business acquisition, or at cost when not purchased in a business acquisition. All other identifiable intangible assets are amortized on a straight-line basis over their estimated useful lives of three years to 20.5 years. Useful lives for identifiable intangible assets are estimated at the time of acquisition based on the periods of time from which we expect to derive benefits from the identifiable intangible assets. Amortization of purchased and core technology is included in cost of sales in the Consolidated Statements of Operations. Amortization of all other acquired identifiable intangible assets is charged to operating expenses as a component of general and administrative expense. Identifiable intangible assets are reviewed for impairment whenever events or circumstances indicate that undiscounted expected future cash flows are not sufficient to recover the carrying value amount. Impairment losses, if any, are recorded in the period the impairment is identified. There were no impairments identified in fiscal 2023, 2022 or 2021.
Goodwill | Goodwill Goodwill represents the excess of cost over the fair value of identifiable assets acquired. Goodwill is quantitatively tested for impairment on an annual basis as of June 30, or more frequently if events or circumstances occur which could indicate impairment. We have two reportable segments: our IoT Products & Services segment and our IoT Solutions segment (see Note 4 to the consolidated financial statements). Effective with the reorganization announcement on October 7, 2020 (see Note 10), our IoT Products & Services business is structured to include four reporting units under the IoT Products & Services segment, each with a reporting manager: Cellular Routers, Console Servers, OEM Solutions and Infrastructure Management. Following our acquisition of Ventus in the first fiscal quarter of 2022, IoT Solutions is comprised of two reporting units: Ventus and SmartSense by Digi. We have six reporting units that have been tested individually for impairment. Due to the reorganization on October 7, 2020 (see Note 10), we performed an interim impairment test in addition to our annual test as of June 30, 2021. Our goodwill impairment tests as of June 30, 2023, June 30,2022, June 30, 2021 and October 7, 2020 indicated no impairment (see Note 3). During the fourth quarter of fiscal 2023, we assessed various qualitative factors to determine whether or not an additional goodwill impairment assessment was required as of September 30, 2023, and we concluded that no additional impairment assessment was required.
Contingent Consideration | Contingent Consideration We measure our contingent consideration liabilities recognized in connection with business combinations at fair value on a recurring basis using significant unobservable inputs classified within Level 3 of the fair value hierarchy as defined in ASC 820 "Fair Value Measurement." We used a probability-weighted discounted cash flow approach as a valuation technique to 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) determine the fair value of the contingent consideration on the acquisition date. At each subsequent reporting period, the fair value is re-measured with the change in fair value recognized in general and administrative expense in our Consolidated Statements of Operations. Amounts, if any, paid to the seller in excess of the amount recorded on the acquisition date will be classified as cash flows used in operating activities. Payments to the seller not exceeding the acquisition-date fair value of the contingent consideration will be classified as cash flows used in financing activities.
Warranties | Warranties In general, we warrant our hardware products to be free from defects in material and workmanship under normal use and service. The warranty periods generally range from one year to five years. We typically have the option to either repair or replace hardware products we deem defective with regard to material or workmanship. Estimated warranty costs are accrued in the period that the related revenue is recognized based upon an estimated average per unit repair or replacement cost applied to the estimated number of units under warranty. These estimates are based upon historical warranty incidents and are evaluated on an ongoing basis to ensure the adequacy of the warranty accrual. We also warrant our software or firmware incorporated into our products generally for a period of one year and offer to provide a bug fix or software patch within a reasonable period. We have not accrued specifically for this warranty and have not had claims specifically related to software or firmware. We are not responsible for, and do not warrant that, custom software versions, created by OEM customers based upon our software source code, will function in a particular way, will conform to any specifications or are fit for any particular purpose. Further, we do not indemnify these customers from any third-party liability as it relates to or arises from any customization or modifications made by the OEM customer.
Treasury stock | Treasury Stock We record treasury stock at cost. Treasury stock may be acquired from employees for tax withholding purposes related to vesting of restricted stock unit awards as part of our stock-based compensation program and issued pursuant to the Employee Stock Purchase Plan.
Revenue Recognition | Revenue Recognition We recognize hardware product revenue upon transfer of control of goods or services to customers in an amount that reflects the consideration we expect to receive in exchange for those goods or services. We determine the amount of revenue to be recognized through application of the following steps: •identification of the contract, or contracts with a customer; •identification of the performance obligations in the contract; •determination of the transaction price; •allocation of the transaction price to the performance obligations in the contract; and •recognition of revenue when or as we satisfy the performance obligations. Hardware Product Revenue and SmartSense by Digi Equipment Revenue and Associated Installation Fees Our hardware product revenue is derived primarily from the sale of wired and wireless hardware products to our distributors and OEM customers. Product revenue generally is recognized upon shipment of the product to a customer. Sales to authorized domestic distributors and OEM customers typically are made with certain rights of return and price adjustment provisions. Estimated reserves for future credit returns and pricing adjustments are established based on an analysis of historical patterns of credit returns and price adjustments compared to received credit returns and distribution sales for the current period. Estimated reserves for future credit returns and price adjustments are charged against revenue in the same period as the corresponding sales are recorded. Material differences between the historical trends used to determine estimated reserves and actual credit returns and pricing adjustments could result in a material change to our consolidated results of operations or financial position. Estimated sales returns for our distributor stock rotation program are accounted for under the guidance of ASC 845 Nonmonetary Transactions. 1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Equipment revenue from SmartSense by Digi and Ventus within our IoT Solutions segment is recognized upon shipment of the equipment to a customer. Installation service charges from these sales are recorded when the product is installed. Subscription and Support Services Revenue Our SmartSense by Digi and Ventus subscription revenue is recorded on a monthly basis. These subscriptions are generally in a range from one year to five years, and may contain an evergreen renewal provision. Generally, our subscription renewal charges per month are the same as the original contract term. We derive service revenue from our Digi Remote Manager, a platform-as-a-service (“PaaS”) offering, whereby customers pay for services consumed based on the number of devices being managed or monitored. This revenue is recognized over the life of the service term and is included in our IoT Products & Services segment. Digi Support Services revenues are recognized over the life of the support contract and included in our IoT Products & Services segment. Some of Digi Support Services revenue is for training and this revenue is recognized as the services are performed. Professional Services Revenue Professional services revenue is derived from our Digi Wireless Design Services contracts on either on a time-and-materials or a fixed-fee basis. These revenues, which are included in our IoT Products & Services segment are recognized as the services are performed for time-and-materials contracts or as invoiced for fixed-fee contracts. Contracts with Multiple Performance Obligations From time to time we have contracts from customers with multiple performance obligations. Our hardware products may be combined with our Digi Remote Manager PaaS offering as well as other support services in an individual contract. Our SmartSense by Digi® revenues typically are derived from contracts with multiple performance obligations. These obligations may include: delivery of monitoring equipment that the customer purchases out-right, monitoring services, providing condition alerts of assets being monitored, and recertification of sensor equipment. When we retain ownership of the equipment, we charge an implementation fee to the customer so they can begin using the equipment. In these instances, all revenue derived from the above obligations is recognized over the subscription term of the contract. If the customer purchases the equipment out-right, that portion of the revenue is recognized at the stand-alone selling price at the time the equipment is shipped and all other revenue is recognized over the subscription term of the contract. We have made an accounting policy election to exclude from the measurement of our revenues any sales or similar taxes we collect from customers.
Research and Development | Research and Development Research and development costs are expensed when incurred. Research and development costs include compensation, allocation of corporate costs, depreciation, utilities, professional services and prototypes. Software and firmware development costs are expensed as incurred until the point that both the technological feasibility and the proven marketability of the product are established. To date, the time period between the establishment of technological feasibility and completion of software development has been short and no significant development costs have been incurred during that period. Accordingly, we have not capitalized any software development costs to date.
Income Taxes | Income Taxes Deferred income taxes are recognized for the tax consequences in future years of differences between the tax basis of assets and liabilities and their financial reporting amounts at each year end based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. Income tax expense is equal to the tax payable for the period and the change during the period in deferred tax assets and liabilities as well as changes in income tax reserves. We maintain valuation allowances unless it is more likely than not that all or a portion of the deferred tax assets will be realized. Changes in valuation allowances from period to period are included in our tax provision in the period of change. We recognize the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs.
Stock-Based Compensation | Stock-Based Compensation Stock-based compensation expense represents the cost of employee services received in exchange for an award of equity instruments based on the grant date fair value of the award. This cost must be recognized over the period during which an employee is required to provide the service (usually the vesting period).
Foreign Currency Translation | Foreign Currency TranslationFinancial position and results of operations of our international subsidiaries are measured using local currencies as the functional currency. Assets and liabilities of these operations are translated at the exchange rates in effect at the end of each reporting period. For our international subsidiaries, our statements of operations accounts are translated at the weighted average rates of exchange prevailing during each reporting period. Translation adjustments arising from the use of differing currency exchange rates from period to period are included in accumulated other comprehensive loss in stockholders’ equity. Gains and losses on foreign currency exchange transactions, as well as translation gains or losses on transactions denominated in currencies other than an entity’s functional currency, are reflected in the statement of operations. During fiscal 2023, 2022 and 2021 there were net transaction gains (losses) of $0.0 million, $0.1 million and $(0.1) million, respectively that were recorded in other income, net. We manage our net asset or net liability position for U.S. dollar accounts in our foreign locations to reduce our foreign currency risk. We have not implemented a formal hedging strategy.
Comprehensive Income | Comprehensive Income Our comprehensive income is comprised of net income, foreign currency translation adjustments and unrealized gains and losses on available-for-sale marketable securities. These items are charged or credited to the accumulated other comprehensive loss account in stockholders’ equity.
Net Income Per Common Share | Net Income Per Common Share Basic net income per common share is calculated based on the weighted average number of common shares outstanding during the period. Diluted net income per common share is computed by dividing net income by the weighted average number of common and potentially dilutive common shares outstanding during the period. Potentially dilutive common shares of our stock result from common stock options and restricted stock units. We use the treasury stock method to calculate the weighted-average shares used in the diluted earnings per share computation. Under this method the proceeds from exercise of an option, any amount of compensation cost for future service that we have not yet recognized, and the amount of estimated tax benefits that would be recorded in paid-in capital when the option is exercised are assumed to have been used to repurchase shares in the current period. The following table is a reconciliation of the numerators and denominators in the net income per common share calculations (in thousands, except per common share data):
| Year ended September 30,
| 2023 |  | 2022 |  | 2021
Numerator: |  |  |  |  |
Net income | $ | 24,770 |  |  | $ | 19,383 |  |  | $ | 10,366 |
Denominator: |  |  |  |  |
Denominator basic net income per common share — weighted average shares outstanding | 35,820 |  |  | 35,031 |  |  | 32,111 |
Effect of dilutive securities: |  |  |  |  |
Stock options and restricted stock units | 1,049 |  |  | 964 |  |  | 1,283 |
Denominator diluted net income per common share — adjusted weighted average shares | 36,869 |  |  | 35,995 |  |  | 33,394 |
Net income per common share, basic | $ | 0.69 |  |  | $ | 0.55 |  |  | $ | 0.32 |
Net income per common share, diluted | $ | 0.67 |  |  | $ | 0.54 |  |  | $ | 0.31 |
Because their effect would be anti-dilutive at period end, certain potentially dilutive shares related to stock options to purchase common shares were excluded in the above computation of diluted earnings per share because the options’ exercise prices were greater than the average market price of our common shares. For the years ended September 30, 2023, 2022 and 2021, such excluded stock options were 395,190, 647,181 and 1,122,121, respectively.

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