Nature of Operations and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jun. 30, 2019
Accounting Policies [Abstract]
Consolidation	CONSOLIDATION The consolidated financial statements include the accounts of JHA and all of its subsidiaries, which are wholly-owned, and all intercompany accounts and transactions have been eliminated.
Use of Estimates	USE OF ESTIMATES The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP") requires management 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 revenues and expenses during the reporting period. Actual results could differ from those estimates.
Revenue Recognition	REVENUE RECOGNITION The Company generates "Services and Support" revenue through software licensing and related services, outsourcing core & complementary software solutions, professional services, and hardware sales. The Company generates "Processing" revenue through processing of remittance transactions, card transactions and monthly fees, and digital transactions. Significant Judgments in Application of the Guidance Identification of Performance Obligations The Company enters into contracts with customers that may include multiple types of goods and services. At contract inception, the Company assesses the solutions and services promised in its contracts with customers and identifies a performance obligation for each promise to transfer to the customer a solution or service (or bundle of solutions or services) that is distinct - that is, if the solution or service is separately identifiable from other items in the arrangement and if the customer can benefit from the solution or service on its own or together with other resources that are readily available. Significant judgment is used in the identification and accounting for all performance obligations. The Company recognizes revenue when or as it satisfies each performance obligation by transferring control of a solution or service to the customer. Determination of Transaction Price The amount of revenue recognized is based on the consideration the Company expects to receive in exchange for transferring goods and services to the customer. The Company’s contracts with its customers frequently contain some component of variable consideration. The Company estimates variable consideration in its contracts primarily using the expected value method, based on both historical and current information. Where appropriate, the Company may constrain the estimated variable consideration included in the transaction price in the event of a high degree of uncertainty as to the final consideration amount. Significant judgment is used in the estimate of variable consideration of customer contracts that are long-term and include uncertain transactional volumes. Taxes collected from customers and remitted to governmental authorities are not included in revenue. The Company includes reimbursements from customers for expenses incurred in providing services (such as for postage, travel and telecommunications costs) in revenue, while the related costs are included in cost of revenue. Technology or service components from third parties are frequently included in or combined with the Company’s applications or service offerings. Whether the Company recognizes revenue based on the gross amount billed to the customer or the net amount retained involves judgment in determining whether the Company controls the good or service before it is transferred to the customer. This assessment is made at the performance obligation level. Allocation of Transaction Price The transaction price, once determined, is allocated between the various performance obligations in the contract based upon their relative standalone selling prices. The standalone selling prices are determined based on the prices at which the Company separately sells each good or service. For items that are not sold separately, the Company estimates the standalone selling prices using all information that is reasonably available, including reference to historical pricing data. The following describes the nature of the Company’s primary types of revenue: Processing Processing revenue is generated from transaction-based fees for electronic deposit and payment services, electronic funds transfers and debit and credit card processing. The Company’s arrangements for these services typically require the Company to “stand-ready” to provide specific services on a when and if needed basis by processing an unspecified number of transactions over the contractual term. The fees for these services may be fixed or variable (based upon performing an unspecified quantity of services), and pricing may include tiered pricing structures. Amounts of revenue allocated to these services are recognized as those services are performed. Customers are typically billed monthly for transactions processed during the month. The Company evaluates tiered pricing to determine if a material right exists. If, after that evaluation, it determines a material right does exist, it assigns value to the material right based upon standalone selling price after estimation of breakage associated with the material right. Outsourcing and Cloud Outsourcing and cloud revenue is generated from data and item processing services and hosting fees. The Company’s arrangements for these services typically require the Company to “stand-ready” to provide specific services on a when and if needed basis. The fees for these services may be fixed or variable (based upon performing an unspecified quantity of services), and pricing may include tiered pricing structures. Amounts of revenue allocated to these services are recognized as those services are performed. Data and item processing services are typically billed monthly. The Company evaluates tiered pricing to determine if a material right exists. If, after that evaluation, it determines a material right does exist, it assigns value to the material right based upon standalone selling price. Product Delivery and Services Product delivery and services revenue is generated primarily from software licensing and related professional services and hardware delivery. Software licenses, along with any professional services from which they are not considered distinct, are recognized as they are delivered to the customer. Hardware revenue is recognized upon delivery. Professional services that are distinct are recognized as the services are performed. Deconversion fees are also included within product delivery and services, and are considered a contract modification. Therefore, the Company recognizes these fees over the remaining modified contract term. In-House Support In-house support revenue is generated from software maintenance for ongoing client support and software usage, which includes a license and ongoing client support. The Company’s arrangements for these services typically require the Company to “stand-ready” to provide specific services on a when and if needed basis. The fees for these services may be fixed or variable (based upon performing an unspecified quantity of services). Software maintenance fees are typically billed to the customer annually in advance and recognized ratably over the maintenance term. Software usage is typically billed annually in advance, with the license delivered and recognized at the outset, and the maintenance fee recognized ratably over the maintenance term. Accordingly, the Company utilizes the practical expedient which allows entities to disregard the effects of a financing component when the contract period is one year or less.
Contract Assets and Liabilities [Policy Text Block]	Contract assets primarily result from revenue being recognized when or as control of a solution or service is transferred to the customer, but where invoicing is delayed until the completion of other performance obligations or payment terms differ from the provisioning of services. The current portion of contract assets is reported within prepaid expenses and other in the consolidated balance sheet, and the non-current portion is included in other non-current assets. Contract liabilities (deferred revenue) primarily relate to consideration received from customers in advance of delivery of the related goods and services to the customer. Contract balances are reported in a net contract asset or liability position on a contract-by-contract basis at the end of each reporting period.
Capitalized Contract Costs [Policy Text Block]	The Company incurs incremental costs to obtain a contract as well as costs to fulfill contracts with customers that are expected to be recovered. These costs consist primarily of sales commissions, which are incurred only if a contract is obtained, and customer conversion or implementation-related costs. Capitalized costs are amortized based on the transfer of goods or services to which the asset relates, in line with the percentage of revenue recognized for each performance obligation to which the costs are allocated.
Computer Software Development	COMPUTER SOFTWARE DEVELOPMENT The Company capitalizes new product development costs incurred for software to be sold from the point at which technological feasibility has been established through the point at which the product is ready for general availability. Software development costs that are capitalized are evaluated on a product-by-product basis annually and are assigned an estimated economic life based on the type of product, market characteristics, and maturity of the market for that particular product. These costs are amortized based on current and estimated future revenue from the product or on a straight-line basis, whichever yields greater amortization expense. All of this amortization expense is included within components of operating income, primarily cost of revenue.
Internal Use Software	The Company capitalizes development costs for internal use software beginning at the start of application development. Amortization begins on the date the software is placed in service and the amortization period is based on estimated useful life.
Cash Equivalents	CASH EQUIVALENTS The Company considers all highly liquid investments with maturities of three months or less at the time of acquisition to be cash equivalents.
Accounts Receivable	ACCOUNTS RECEIVABLE Receivables are recorded at the time of billing. A reasonable estimate of the realizability of customer receivables is made through the establishment of an allowance for doubtful accounts, which is estimated based on a combination of write-off history, aging analysis, and any specifically known collection issues.
Property and Equipment	PROPERTY AND EQUIPMENT AND INTANGIBLE ASSETS Property and equipment is stated at cost and depreciated using the straight-line method over the estimated useful lives of the assets.
Intangible Assets	Intangible assets consist of goodwill, customer relationships, computer software, and trade names acquired in business acquisitions in addition to internally developed computer software. The amounts are amortized, with the exception of those with an indefinite life (goodwill), over an estimated economic benefit period, generally three to twenty years. The Company reviews its long-lived assets and identifiable intangible assets with finite lives for impairment whenever events or changes in circumstances have indicated that the carrying amount of its assets might not be recoverable. The Company evaluates goodwill for impairment of value on an annual basis as of January 1 and between annual tests if events or changes in circumstances indicate that the asset might be impaired.
Comprehensive Income	COMPREHENSIVE INCOME Comprehensive income for each of the fiscal years ending June 30, 2019, 2018, and 2017 equals the Company’s net income.
Reportable Segment Information	REPORTABLE SEGMENT INFORMATION In accordance with U.S. GAAP, the Company's operations are classified as four reportable segments: Core, Payments, Complementary, and Corporate and Other (see Note 13). Substantially all the Company’s revenues are derived from operations and assets located within the United States of America.
Common Stock	COMMON STOCK The Board of Directors has authorized the Company to repurchase shares of its common stock. Under this authorization, the Company may finance its share repurchases with available cash reserves or short-term borrowings on its existing credit facilities. The share repurchase program does not include specific price targets or timetables and may be suspended at any time.
Earnings Per Share	EARNINGS PER SHARE Per share information is based on the weighted average number of common shares outstanding during the year. Stock options and restricted stock have been included in the calculation of income per diluted share to the extent they are dilutive. The difference between basic and diluted weighted average shares outstanding is the dilutive effect of outstanding stock options and restricted stock (see Note 10).
Income Taxes	INCOME TAXES Deferred tax liabilities and assets are recognized for the tax effects of differences between the financial statement and tax bases of assets and liabilities. A valuation allowance would be established to reduce deferred tax assets if it is more likely than not that a deferred tax asset will not be realized. The Company recognizes the tax benefit from an uncertain tax position only if it is more likely than not that the tax position will be sustained on examination by the taxing authorities, based upon the technical merits of the position. The tax benefit recognized in the financial statements from such a position is measured based on the largest benefit that has a greater than 50% likelihood of being realized upon ultimate settlement. Also, interest and penalties expense are recognized on the full amount of deferred benefits for uncertain tax positions. The Company's policy is to include interest and penalties related to unrecognized tax benefits in income tax expense.