Nature of Operations and Summary of Significant Accounting Policies (Text Block)	3 Months Ended
Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies [Text Block]	NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Description of the Company Jack Henry & Associates, Inc. and subsidiaries (“JHA” or the “Company”) is a provider of integrated computer systems and services that has developed and acquired a number of banking and credit union software systems. The Company's revenues are predominately earned by marketing those systems to financial institutions nationwide together with computer equipment (hardware), by providing the conversion and implementation services for financial institutions to utilize JHA systems, and by providing other related services. JHA also provides continuing support and services to customers using in-house or outsourced systems. Consolidation The condensed 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. Comprehensive Income Comprehensive income for the three months ended September 30, 2016 and 2015 equals the Company’s net income. 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. Accumulated depreciation at September 30, 2016 totaled $338,506 and at June 30, 2016 totaled $328,159. 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 (such as goodwill), over an estimated economic benefit period, generally three to twenty years. Accumulated amortization of intangible assets totaled $457,496 and $435,871 at September 30, 2016 and June 30, 2016, respectively. 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. At September 30, 2016, there were 24,909 shares in treasury stock and the Company had the remaining authority to repurchase up to 5,082 additional shares. The total cost of treasury shares at September 30, 2016 is $937,473. During the first three months of fiscal 2017, the Company repurchased 700 treasury shares for $61,338. At June 30, 2016, there were 24,209 shares in treasury stock and the Company had authority to repurchase up to 5,782 additional shares. Dividends declared per share were $0.28 and $0.25, for the three months ended September 30, 2016 and 2015, respectively. Interim Financial Statements The accompanying condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q of the Securities and Exchange Commission and in accordance with accounting principles generally accepted in the United States of America applicable to interim condensed consolidated financial statements, and do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete consolidated financial statements. The condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes, which are included in its Annual Report on Form 10-K (“Form 10-K”) for the fiscal year ended June 30, 2016. The accounting policies followed by the Company are set forth in Note 1 to the Company's consolidated financial statements included in its Form 10-K for the fiscal year ended June 30, 2016. In the opinion of the management of the Company, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary (consisting of normal recurring adjustments) to state fairly the financial position of the Company as of September 30, 2016, the results of its operations for the three months ending September 30, 2016 and 2015, and its cash flows for the three months ending September 30, 2016 and 2015. The condensed consolidated balance sheet at June 30, 2016 was derived from audited annual financial statements, but does not contain all of the footnote disclosures from the annual financial statements. The results of operations for the period ended September 30, 2016 are not necessarily indicative of the results to be expected for the entire year. Litigation We are subject to various routine legal proceedings and claims, including the following: In 2013 a patent infringement lawsuit entitled DataTreasury Corporation v. Jack Henry & Associates, Inc. et. al. was filed against the Company, several subsidiaries and a number of customer financial institutions in the US District Court for the Eastern District of Texas. The complaint seeks damages, interest, injunctive relief, and attorneys' fees for the alleged infringement of two patents, as well as trebling of damage awards for alleged willful infringement. We believe we have strong defenses and have defended the lawsuit vigorously. A part of that defense has been the filing of challenges to the validity of plaintiff's patents in post-grant proceedings at the Patent Trial and Appeal Board ("PTAB") of the U.S. Patent and Trademark Office. In 2015, the PTAB issued decisions holding that all relevant claims of the plaintiff's patents are unpatentable and invalid. DataTreasury's appeal of the PTAB decisions to the U.S. Court of Appeals for the Federal Circuit was unsuccessful pursuant to decisions rendered on October 13, 2016. DataTreasury has the right to appeal these decisions. At this stage, we cannot make a reasonable estimate of possible loss or range of loss, if any, arising from this lawsuit.

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of the Company

Jack Henry & Associates, Inc. and subsidiaries (“JHA” or the “Company”) is a provider of integrated computer systems and services that has developed and acquired a number of banking and credit union software systems. The Company's revenues are predominately earned by marketing those systems to financial institutions nationwide together with computer equipment (hardware), by providing the conversion and implementation services for financial institutions to utilize JHA systems, and by providing other related services. JHA also provides continuing support and services to customers using in-house or outsourced systems.

Consolidation

The condensed 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.

Comprehensive Income

Comprehensive income for the three months ended September 30, 2016 and 2015 equals the Company’s net income.

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. Accumulated depreciation at September 30, 2016 totaled $338,506 and at June 30, 2016 totaled $328,159.

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 (such as goodwill), over an estimated economic benefit period, generally three to twenty years. Accumulated amortization of intangible assets totaled $457,496 and $435,871 at September 30, 2016 and June 30, 2016, respectively.

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. At September 30, 2016, there were 24,909 shares in treasury stock and the Company had the remaining authority to repurchase up to 5,082 additional shares. The total cost of treasury shares at September 30, 2016 is $937,473. During the first three months of fiscal 2017, the Company repurchased 700 treasury shares for $61,338. At June 30, 2016, there were 24,209 shares in treasury stock and the Company had authority to repurchase up to 5,782 additional shares.

Dividends declared per share were $0.28 and $0.25, for the three months ended September 30, 2016 and 2015, respectively.

Interim Financial Statements

The accompanying condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q of the Securities and Exchange Commission and in accordance with accounting principles generally accepted in the United States of America applicable to interim condensed consolidated financial statements, and do not include all of the information and footnotes required by accounting principles generally accepted in the United States of America for complete consolidated financial statements. The condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes, which are included in its Annual Report on Form 10-K (“Form 10-K”) for the fiscal year ended June 30, 2016. The accounting policies followed by the Company are set forth in Note 1 to the Company's consolidated financial statements included in its Form 10-K for the fiscal year ended June 30, 2016.

In the opinion of the management of the Company, the accompanying unaudited condensed consolidated financial statements reflect all adjustments necessary (consisting of normal recurring adjustments) to state fairly the financial position of the Company as of September 30, 2016, the results of its operations for the three months ending September 30, 2016 and 2015, and its cash flows for the three months ending September 30, 2016 and 2015. The condensed consolidated balance sheet at June 30, 2016 was derived from audited annual financial statements, but does not contain all of the footnote disclosures from the annual financial statements.

The results of operations for the period ended September 30, 2016 are not necessarily indicative of the results to be expected for the entire year.

Litigation

We are subject to various routine legal proceedings and claims, including the following:

In 2013 a patent infringement lawsuit entitled DataTreasury Corporation v. Jack Henry & Associates, Inc. et. al. was filed against the Company, several subsidiaries and a number of customer financial institutions in the US District Court for the Eastern District of Texas. The complaint seeks damages, interest, injunctive relief, and attorneys' fees for the alleged infringement of two patents, as well as trebling of damage awards for alleged willful infringement. We believe we have strong defenses and have defended the lawsuit vigorously. A part of that defense has been the filing of challenges to the validity of plaintiff's patents in post-grant proceedings at the Patent Trial and Appeal Board ("PTAB") of the U.S. Patent and Trademark Office. In 2015, the PTAB issued decisions holding that all relevant claims of the plaintiff's patents are unpatentable and invalid. DataTreasury's appeal of the PTAB decisions to the U.S. Court of Appeals for the Federal Circuit was unsuccessful pursuant to decisions rendered on October 13, 2016. DataTreasury has the right to appeal these decisions. At this stage, we cannot make a reasonable estimate of possible loss or range of loss, if any, arising from this lawsuit.