Nature of Operations and Summary of Significant Accounting Policies (Text Block)	9 Months Ended
Mar. 31, 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 and nine months ended March 31, 2016 and 2015 equals the Company’s net income. 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 March 31, 2016, there were 23,962 shares in treasury stock and the Company had the remaining authority to repurchase up to 6,028 additional shares. The total cost of treasury shares at March 31, 2016 is $855,594. During the first nine months of fiscal 2016, the Company repurchased 2,120 treasury shares for $155,122. At June 30, 2015, there were 21,843 shares in treasury stock and the Company had authority to repurchase up to 8,148 additional shares. Dividends declared per share were $0.28 and $0.25, for the three months ended March 31, 2016 and 2015, respectively. For the nine months ended March 31, 2016 and 2015, dividends declared per share were $0.78 and $0.69, 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, 2015. 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, 2015. 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 March 31, 2016, the results of its operations for the three and nine months ending March 31, 2016 and 2015, and its cash flows for the nine months ending March 31, 2016 and 2015. The condensed consolidated balance sheet at June 30, 2015 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 March 31, 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. On April 29, July 8, and September 1 2015, the PTAB issued decisions holding that all relevant claims of the plaintiff's patents are unpatentable and invalid. DataTreasury has appealed the PTAB decisions to the U.S. Court of Appeals for the Federal Circuit. 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 and nine months ended March 31, 2016 and 2015 equals the Company’s net income.

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 March 31, 2016, there were 23,962 shares in treasury stock and the Company had the remaining authority to repurchase up to 6,028 additional shares. The total cost of treasury shares at March 31, 2016 is $855,594. During the first nine months of fiscal 2016, the Company repurchased 2,120 treasury shares for $155,122. At June 30, 2015, there were 21,843 shares in treasury stock and the Company had authority to repurchase up to 8,148 additional shares.

Dividends declared per share were $0.28 and $0.25, for the three months ended March 31, 2016 and 2015, respectively. For the nine months ended March 31, 2016 and 2015, dividends declared per share were $0.78 and $0.69, 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, 2015. 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, 2015.

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 March 31, 2016, the results of its operations for the three and nine months ending March 31, 2016 and 2015, and its cash flows for the nine months ending March 31, 2016 and 2015. The condensed consolidated balance sheet at June 30, 2015 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 March 31, 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. On April 29, July 8, and September 1 2015, the PTAB issued decisions holding that all relevant claims of the plaintiff's patents are unpatentable and invalid. DataTreasury has appealed the PTAB decisions to the U.S. Court of Appeals for the Federal Circuit. At this stage, we cannot make a reasonable estimate of possible loss or range of loss, if any, arising from this lawsuit.