Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2019
Accounting Policies [Abstract]
Principles of consolidation	Principles of consolidation. The consolidated financial statements include the accounts of Agilysys, Inc. and subsidiaries. Investments in affiliated companies are accounted for by the equity or cost method, as appropriate. All inter-company accounts have been eliminated.
Use of estimates	Use of estimates. Preparation of consolidated financial statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reported periods. Actual results could differ from those estimates.
Cash and cash equivalents	Cash and cash equivalents. We consider all highly liquid investments purchased with an original maturity from date of acquisition of three months or less to be cash equivalents. Other highly liquid investments considered cash equivalents with no established maturity date are fully redeemable on demand (without penalty) with settlement of principal and accrued interest on the following business day after instruction to redeem. Such investments are readily convertible to cash with no penalty and can include certificates of deposit, commercial paper, treasury bills, money market funds and other investments.
Allowance for doubtful accounts	Allowance for doubtful accounts. We maintain allowances for doubtful accounts for estimated losses resulting from the inability or unwillingness of our customers to make required payments. These allowances are based on both recent trends of certain customers estimated to be a greater credit risk as well as historic trends of the entire customer pool. If the financial condition of our customers were to deteriorate, resulting in an impairment of their ability to make payments, additional allowances may be required. To mitigate this credit risk we perform periodic credit evaluations of our customers.
Inventories	Inventories. Our inventories are comprised of finished goods. Inventories are stated at the lower of cost or net realizable value, net of related reserves. The cost of inventory is computed using a weighted-average method. Our inventory is monitored to ensure appropriate valuation. Adjustments of inventories to the lower of cost or net realizable value, if necessary, are based upon contractual provisions such as turnover and assumptions about future demand and market conditions. If assumptions about future demand change and/or actual market conditions are less favorable than those projected by management, additional adjustments to inventory valuations may be required. We provide a reserve for obsolescence, which is calculated based on several factors, including an analysis of historical sales of products and the age of the inventory. Actual amounts could be different from those estimated.
Goodwill	Goodwill and Other Indefinite-Lived Intangible Assets. Goodwill represents the excess purchase price paid over the fair value of the net assets of acquired companies. The carrying amount of goodwill was $19.6 million as of March 31, 2019 and 2018. Goodwill is tested for impairment on an annual basis, or in interim periods if indicators of potential impairment exist. The Company evaluates whether goodwill is impaired by comparing its market capitalization based on its closing stock price (Level 1 input) to the book value of its equity on the annual evaluation date. Based on testing performed, the Company concluded that no impairment of its goodwill has occurred for the years ended March 31, 2019, 2018 and 2017. The Company is also required to compare the fair values of other indefinite-lived intangible assets to their carrying amounts at least annually, or when current events and circumstances require an interim assessment. If the carrying amount of an indefinite-lived intangible asset exceeds its fair value, an impairment loss is recognized.
Intangible assets	Intangible assets. Purchased intangible assets with finite lives are primarily amortized using the straight-line method over the estimated economic lives of the assets. Our finite-lived intangible assets are amortized over periods between two and eight years. Customer relationships are amortized over estimated useful lives between two and seven years; non-competition agreements are amortized over estimated useful lives between two and eight years; developed technology is amortized over estimated useful lives between three and eight years; supplier relationships are amortized over estimated useful lives between two and eight years.
Long-lived assets	Long-lived assets. Property and equipment are recorded at cost. Major renewals and improvements are capitalized. Minor replacements, maintenance, repairs, and reengineering costs are expensed as incurred. When assets are sold or otherwise disposed of, the cost and related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is recognized. Depreciation and amortization are provided in amounts sufficient to amortize the cost of the assets, including assets recorded under capital leases, which make up less than one percent of total assets, over their estimated useful lives using the straight-line method. The estimated useful lives for depreciation and amortization are as follows: buildings and building improvements - 7 to 30 years; furniture - 7 to 10 years; equipment - 3 to 10 years; software - 3 to 10 years; and leasehold improvements over the shorter of the economic life or the lease term. Internal use software costs are expensed or capitalized depending on the project stage. Amounts capitalized are amortized over the estimated useful lives of the software, ranging from 3 to 10 years, beginning with the project's completion. Depreciation for capitalized project expenditures does not begin until the underlying project is completed. We evaluate the recoverability of our long-lived assets whenever changes in circumstances or events may indicate that the carrying amounts may not be recoverable. An impairment loss is recognized in the event the carrying value of the assets exceeds the future undiscounted cash flows attributable to such assets.
Foreign currency translation	Foreign currency translation. The financial statements of our foreign operations are translated into U.S. dollars for financial reporting purposes. The assets and liabilities of foreign operations whose functional currencies are not in U.S. dollars are translated at the period-end exchange rates, while revenue and expenses are translated at weighted-average exchange rates during the fiscal year. The cumulative translation effects are reflected as a component of “Accumulated other comprehensive loss” within shareholders' equity in the Consolidated Balance Sheets. Gains and losses on monetary transactions denominated in other than the functional currency of an operation are reflected within “Other (income) expenses, net” in the Consolidated Statements of Operations. Foreign currency gains and losses from changes in exchange rates have not been material to our consolidated operating results.
Revenue recognition	Revenue recognition. We derive revenue from the sale of products (i.e., software, third party hardware and operating systems), support, maintenance and subscription services and professional services. For the fiscal years 2019, 2018 and 2017, revenue from international operations was 9%, 8% and 6%, respectively of total revenue. During fiscal 2017 we had one customer representing 10% of consolidated revenue for the year due to a large scale project. Otherwise, our customer base is highly fragmented. On April 1, 2018, we adopted ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), using the modified retrospective method applied to those contracts that were not completed as of the adoption date. Results for reporting periods beginning after the adoption date are presented under Topic 606, while prior period amounts are not adjusted and continue to be reported in accordance with our historic accounting under prior guidance. Revenue recognition under Topic 606 Our customary business practice is to enter into legally enforceable written contracts with our customers. The majority of our contracts are governed by a master service agreement between us and the customer, which sets forth the general terms and conditions of any individual contract between the parties, which is then supplemented by a customer purchase order to specify the different goods and services, the associated prices, and any additional terms for an individual contract. Performance obligations specific to each individual contract are defined within the terms of each purchase order. Each performance obligation is identified based on the goods and services that will be transferred to our customer that are both capable of being distinct and are distinct within the context of the contract. The transaction price is determined based on the consideration to which we will be entitled and expect to receive in exchange for transferring goods or services to the customer. Typically, our contracts do not provide our customer with any right of return or refund; we do not constrain the contract price as it is probable that there will not be a significant revenue reversal due to a return or refund. Typically our customer contracts contain one or more of the following goods or services which constitute performance obligations. Our software licenses typically provide for a perpetual right to use our software. Generally, our contracts do not provide significant services of integration and customization and installation services are not required to be purchased directly from us. The software is delivered before related services are provided and is functional without professional services, updates and technical support. We have concluded that the software license is distinct as the customer can benefit from the software on its own. Software revenue is typically recognized when the software is delivered or made available for download to the customer. Revenue for hardware sales is recognized when the product is shipped to the customer and when obligations that affect the customer's final acceptance of the arrangement have been fulfilled. A majority of our hardware sales involve shipment directly from its suppliers to the end-user customers. In these transactions, we are the primary obligor as we are responsible for negotiating price both with the supplier and the customer, payment to the supplier, establishing payment terms and product returns with the customer, and we bear the credit risk if the customer does not pay for the goods. As the principal contact with the customer, we recognize revenue and cost of goods sold when we are notified by the supplier that the product has been shipped. In certain limited instances, as shipping terms dictate, revenue is recognized upon receipt at the point of destination or upon installation at the customer site. Support and maintenance revenue is derived from providing telephone and on-line technical support services, bug fixes, and unspecified software updates and upgrades to customers on a when-and-if-available basis. Each of these performance obligations provide benefit to the customer on a standalone basis and are distinct in the context of the contract. Each of these distinct performance obligations represent a stand ready obligation to provide service to a customer, which is concurrently delivered and has the same pattern of transfer to the customer, which is why we account for these support services as a single performance obligation, recognized over the term of the maintenance agreement. Our subscription service revenue is comprised of fees for contracts that provide customers a right to access our software for a subscribed period. We do not provide the customer the contractual right to license the software at any time outside of the subscription period under these contracts. The customer can only benefit from the software and software maintenance when provided the right to access the software. Accordingly, each of the rights to access the software, the maintenance services, and any hosting services is not considered a distinct performance obligation in the context of the contract and should be combined into a single performance obligation to be recognized over the contract period. Typically, we invoice fees monthly and either party has the ability to cancel the agreement at each invoiced period. As a result, the contractual period for revenue recognition purposes is considered to be one month with monthly renewals for the term of the customer agreement. Professional services revenues primarily consist of fees for consulting, installation, integration and training and are generally recognized over time as the customer simultaneously receives and consumes the benefits of the professional services as the services are being performed. Professional services can be provided by internal or external providers, do not significantly affect the customer's ability to access or use other provided goods or services, and provide a measure of benefit beyond that of other promised goods or services in the contract. As a result, professional services are considered distinct in the context of the contract and represent a separate performance obligation. Professional services that are billed on a time and materials basis are recognized over time as the services are performed. For contracts billed on a fixed price basis, revenue is recognized over time using an input method based on labor hours expended to date relative to the total labor hours expected to be required to satisfy the related performance obligation. These contracts are reviewed quarterly for loss contract accounting treatment. We use the market estimate approach to drive standalone selling price ("SSP") by maximizing observable data points (in the form of recently executed customer contracts) to determine the price customers are willing to pay for the goods and services transferred. If the contract contains a single performance obligation, the entire transaction price is allocated to that performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on a relative SSP basis. Shipping and handling fees billed to customers are recognized as revenue and the related costs are recognized in cost of goods sold. Revenue is recorded net of any applicable taxes collected and remitted to governmental agencies.
Comprehensive (loss) income	Comprehensive (loss) income. Comprehensive (loss) income is the total of net (loss) income, as currently reported under GAAP, plus other comprehensive (loss) income. Other comprehensive (loss) income considers the effects of additional transactions and economic events that are not required to be recorded in determining net (loss) income, but rather are reported as a separate statement of comprehensive (loss) income.
Fair value measurements	Fair value measurements. We measure the fair value of financial assets and liabilities on a recurring or non-recurring basis. Financial assets and liabilities measured on a recurring basis are those that are adjusted to fair value each time a financial statement is prepared. Financial assets and liabilities measured on a non-recurring basis are those that are adjusted to fair value when a significant event occurs. In determining fair value of financial assets and liabilities, we use various valuation techniques. Additional information regarding fair value measurements is provided in Note 15, Fair Value Measurements.
Investments in corporate-owned life insurance policies and marketable securities	Investments in corporate-owned life insurance policies. Agilysys invests in corporate-owned life insurance policies, for which some are endorsement split-dollar life insurance arrangements. We entered into non-cancelable agreements with each of the former executives, whereby we must maintain the life insurance policy for a specified amount and split a portion of the policy benefits with their designated beneficiary. Our investment in these corporate-owned life insurance policies were recorded at their cash surrender value, which approximates fair value at the balance sheet date. During fiscal 2017, we received $2.2 million related to the death benefit due to us on redemption of two of these policies. In the Consolidated Balance Sheets at the balance sheet date, the cash surrender value of $0.9 million for the remaining policies were held in “Other non-current assets,” and the present value of future proceeds owed to those executives' designated beneficiary of $0.1 million, which approximates fair value, were recorded within "Other non-current liabilities." Additional information regarding the investments in corporate-owned life insurance policies is provided in Note 11, Employee Benefit Plans.
Income Taxes	Income Taxes. Income tax expense includes U.S. and foreign income taxes and is based on reported income before income taxes. We recognize deferred tax assets and liabilities based on the differences between the financial statement carrying amounts and the tax basis of assets and liabilities. The deferred tax assets and liabilities are determined based on the enacted tax rates expected to apply in the periods in which the deferred tax assets or liabilities are anticipated to be settled or realized. We regularly review our deferred tax assets for recoverability and establish a valuation allowance if it is more likely than not that some portion or all of a deferred tax asset will not be realized. The determination as to whether a deferred tax asset will be realized is made on a jurisdictional basis and is based on the evaluation of positive and negative evidence. This evidence includes historical taxable income, projected future taxable income, the expected timing of the reversal of existing temporary differences and the implementation of tax planning strategies. We recognize the tax benefit from uncertain tax positions only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based on the technical merits of the position. The tax benefits recognized from uncertain tax positions are measured at the largest amount of benefit that is greater than fifty percent likely of being realized upon ultimate settlement. No tax benefits are recognized for positions that do not meet this threshold. Interest related to uncertain tax positions is recognized as part of the provision for income taxes and is accrued beginning in the period that such interest would be applicable under relevant tax law until such time that the related tax benefits are recognized. Our income taxes are described further in Note 10, Income Taxes.
Capitalized Software Development Costs	Capitalized Software Development Costs. The capitalization of software development cost for external use begins when a product’s technological feasibility has been established. Capitalization ends when the resulting product is available for general market release. Amortization of the capitalized software is classified within products cost of goods sold in the Consolidated Statements of Operations. For each capitalized software product, the annual amortization is equal to the greater of: (i) the amount computed using the ratio that the software product’s current fiscal year gross revenue bears to the total current fiscal year and anticipated future gross revenues for that product or (ii) the amount computed based on straight-line method over the remaining estimated economic life of the product, which is a range between three and eight years. The amount by which unamortized software costs exceeds the net realizable value, if any, is recognized as a charge to income in the period it is determined.
Advertising Cost [Policy Text Block]	Advertising and Promotion Expense. We expense advertising and promotion expense as incurred. Advertising and promotion expense was $2.0 million, $2.7 million and $2.6 million in fiscal 2019, 2018 and 2017, respectively.
Adopted and Recently Issued Accounting Pronouncements	Adopted and Recently Issued Accounting Pronouncements In April 2019, the Financial Accounting Standards Board ("FASB") issued ASU No. 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. ASU 2019-04 provides corrections, updates and clarifications to the previously issued updates ASU 2016-13, ASU 2017-12 and ASU 2016-01. Various areas of the codification were impacted from the update. The standard follows the effective dates of the previously issued ASUs, unless an entity has already early adopted the previous ASUs, in which case the effective date will vary according to each specific ASU adoption. Consistent with the documentation below, we are still assessing the impact of the adoption of ASU 2016-13, and the other two ASUs affected by ASU 2019-04 are not applicable to us. We are currently reviewing this standard to assess the impact on our future consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-15, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract. ASU 2018-15 addresses the treatment of implementation costs incurred in a hosting arrangement that is a service contract. The update does not impact the accounting for the service element of a hosting arrangement that is a service contract. The update is effective for annual periods beginning after December 15, 2019, including interim periods within those annual periods, with early adoption (including early adoption in any interim period) permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. ASU 2018-13 addresses the required disclosures around fair value measurement. The disclosure requirements of the reasons for transfers between Level 1 and Level 2, the policy for timing transfers between levels, and the valuation process for Level 3 measurements have been removed. Certain modifications were made to required disclosures and additional requirements were established. The standard is effective for annual periods beginning after December 15, 2019, including interim periods within those annual periods. Early adoption is permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In February 2018, the FASB issued ASU No. 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220). ASU 2018-02 addresses the effect of the change in the U.S. federal corporate tax rate on items within accumulated other comprehensive income or loss due to the enactment of the Tax Act on December 22, 2017. The new standard is effective for annual periods, and for interim periods within those annual periods, beginning after December 15, 2018, with early adoption permitted. We do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In January 2017, the FASB issued ASU No. 2017-01, Business Combinations (Topic 805): Clarifying the Definition of a Business, and ASU No. 2017-04, Intangibles- Goodwill and Other (Topic 350) - Simplifying the Test for Goodwill Impairment. ASU No. 2017-01 clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill, and consolidation. The guidance is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. We have adopted this standard as of April 1, 2018; the adoption had no impact on our consolidated financial statements. ASU No. 2017-04 eliminates Step 2 of the goodwill impairment test and requires goodwill impairment to be measured as the amount by which a reporting unit’s carrying amount exceeds its fair value, not to exceed the carrying amount of its goodwill. The ASU is effective for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. While we are still assessing the impact of this standard, we do not believe the adoption of this guidance will have a material impact on our consolidated financial statements. In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory, which requires entities to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs. The new guidance is effective for annual reporting periods beginning after December 15, 2017. The new standard must be adopted using a modified retrospective transition method, with the cumulative effect recognized as of the date of initial adoption. We have adopted this standard as of April 1, 2018; the adoption had no impact to our consolidated financial statements. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which provides guidance with the intent of reducing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU No. 2016-15 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years with early adoption permitted, including adoption in an interim period. We have adopted this standard as of April 1, 2018 the adoption had no impact to our consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments-Credit Losses (Topic 326). This new standard changes the impairment model for most financial assets and certain other instruments. Entities will be required to use a model that will result in the earlier recognition of allowances for losses for trade and other receivables, held-to-maturity debt securities, loans, and other instruments. For available-for-sale debt securities with unrealized losses, the losses will be recognized as allowances rather than as reductions in the amortized cost of the securities. The new standard is effective for annual periods, and for interim periods within those annual periods, beginning after December 15, 2019, with early adoption permitted. We are currently reviewing this standard to assess the impact on our future consolidated financial statements. In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842), which will require lessees to recognize assets and liabilities for leases with lease terms of more than 12 months. Subsequent to this release, the FASB also released ASU No. 2018-11, Leases (Topic 842): Targeted Improvements, ASU 2018-10, Codification Improvements to Topic 842, Leases and ASU No. 2019-01, Leases (Topic 842): Codification Improvements to provide clarifying guidance. Consistent with current U.S. GAAP, the recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a capital (finance) or operating lease. However, unlike current U.S. GAAP, which requires only capital leases to be recognized on the balance sheet, the new guidance will require both types of leases to be recognized on the balance sheet. The most prominent change for lessees is the requirement to recognize both Right of Use (ROU) assets and lease liabilities for leases classified as operating leases under current U.S. GAAP. We have elected to use the transition method of adoption, with certain practical expedients available, to recognize and measure leases existing at, or entered into after, the adoption date of April 1, 2019. Topic 842 is effective for us beginning April 1, 2019. We have elected to adopt as of the effective date and have elected certain practical expedients as a part of our implementation process. During the preparation for implementation, we have reviewed our current control environment for necessary changes. The standard will have a material impact to our Consolidated Balance Sheets, however will not have a material impact on our Consolidated Income Statements or Statements of Cash Flow. The accounting for our capital leases remains the same while our accounting for operating leases will change significantly as a result of the recognition of ROU assets and lease liabilities. We expect the impact of the recognition of ROU assets to be approximately $15 million and approximately $17 million of lease liabilities on our Consolidated Balance Sheets as of April 1, 2019. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). ASU No. 2014-09 supersedes the revenue recognition requirements in Topic 605, Revenue Recognition, and requires entities to recognize revenue when control of the promised goods or services is transferred to customers at an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. We adopted ASU 2014-09 as of April 1, 2018 using the modified retrospective transition method. Please refer to Note 3, Revenue Recognition for further details. Management continually evaluates the potential impact, if any, of all recent accounting pronouncements on our consolidated financial statements or related disclosures and, if significant, makes the appropriate disclosures required by such new accounting pronouncements.