Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation. The consolidated financial statements include the accounts of Quality Systems, Inc. and its wholly-owned subsidiaries (collectively, the “Company”). Each of the terms “we,” “us,” or “our” as used herein refers collectively to the Company, unless otherwise stated. All intercompany accounts and transactions have been eliminated.
Basis of Presentation	Basis of Presentation. The accompanying unaudited consolidated financial statements as of September 30, 2016 and for the three and six months ended September 30, 2015 have been prepared in accordance with the requirements of Quarterly Report on Form 10-Q and Article 10 of the Securities and Exchange Commission Regulation S-X and therefore do not include all information and notes which would be presented were such consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). These consolidated financial statements should be read in conjunction with the audited consolidated financial statements presented in our Annual Report on Form 10-K for the fiscal year ended March 31, 2016. In the opinion of management, the accompanying consolidated financial statements reflect all adjustments which are necessary for a fair statement of the results of operations and cash flows for the periods presented. The results of operations for such interim periods are not necessarily indicative of results of operations to be expected for the full year. References to amounts in the consolidated financial statement sections are in thousands, except shares and per share data, unless otherwise specified.
Recent Accounting Standards	Recent Accounting Standards. Recent accounting pronouncements requiring implementation in future periods are discussed below or in the notes, where applicable. In August 2016, the FASB issued Accounting Standards Update ("ASU") 2016-15, Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 is intended to add and clarify guidance on the classification of certain cash receipts and cash payments in the statement of cash flows to eliminate diversity in practice related to such cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for interim and annual reporting periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. ASU 2016-15 is effective for us in the first quarter of fiscal 2019. We do not expect the adoption of this new standard to have a material impact on our consolidated financial statements. In March 2016, the FASB issued Accounting Standards Update ("ASU") 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09"). ASU 2016-09 simplifies the accounting for and reporting on share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. ASU 2016-09 is effective for interim and annual reporting periods beginning after December 15, 2016, with early adoption permitted. The amendments in this update are to be applied differently upon adoption with certain amendments being applied prospectively, retrospectively and under a modified retrospective transition method. ASU 2016-09 is effective for us in the first quarter of fiscal 2018. We do not expect the adoption of this new standard to have a material impact on our consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”), which is intended to improve financial reporting about leasing transactions. The new guidance will require lessees to recognize on their balance sheets the assets and liabilities for the rights and obligations created by leases and to disclose key information about the leasing arrangements. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, with early adoption permitted. ASU 2016-02 is effective for us in the first quarter of fiscal 2020. We are currently in the process of evaluating the potential impact of adoption of this updated authoritative guidance on our consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, Simplifying the Measurement of Inventory ("ASU 2015-11"), which replaces the concept of subsequently measuring inventory at 'lower of cost or market' with that of 'lower of cost and net realizable value'. The guidance only applies to inventories for which cost is determined by methods other than last-in first-out (LIFO) and the retail inventory method (RIM). ASU 2015-11 is effective for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. Early adoption is permitted. ASU 2015-11 is effective for us in the first quarter of fiscal 2018. We do not expect the adoption of this new standard to have a material impact on our consolidated financial statements. In April 2015, the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Arrangement ("ASU 2015-05"), which requires a customer to determine whether a cloud computing arrangement contains a software license that should be accounted for as internal-use software or as a service contract. ASU 2015-05 is effective for interim and annual reporting periods beginning after December 15, 2015, with early adoption permitted. Upon adoption, an entity has the option to apply the provisions of ASU 2015-05 either prospectively to all arrangements entered into or materially modified, or retrospectively. The adoption of this new standard did not have material impact on our consolidated financial statements. In August 2014, the FASB issued ASU 2014-15, Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern ("ASU 2014-15"), which incorporates and expands upon certain principles that currently exist in U.S. auditing standards. ASU 2014-15 provides guidance regarding management's responsibility to evaluate whether there is substantial doubt about an organization's ability to continue as a going concern and to provide related footnote disclosures. The new standard requires management to perform interim and annual evaluations and sets forth principles for considering the mitigating effect of management's plans. The standard mandates certain disclosures when conditions give rise to substantial doubt about a company’s ability to continue as a going concern within one year from the financial statement issuance date. ASU 2014-15 is effective for us commencing fiscal year ending March 31, 2017. The adoption of this new standard has not had, and is not expected to have, an impact on our consolidated financial statements. In May 2014, the FASB, along with the International Accounting Standards Board, issued ASU 2014-09, Revenue from Contracts with Customers ("ASU 2014-09"), which supersedes the revenue recognition requirements in ASC 605, Revenue Recognition. ASU 2014-09 provides enhancements to the quality and consistency of how revenue is reported while also improving comparability in the financial statements of companies reporting using International Financial Reporting Standards and GAAP. The core principle of this updated guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The new standard also requires additional disclosure about revenue and provides improved guidance for multiple element arrangements. In July 2015 decision, the FASB issued ASU 2015-14, Deferral of Effective Date ("ASU 2015-14") to delay the effective date by one year. In March 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers (Topic 606) –Principal versus Agent Consideration ("ASU 2016-08"). In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606) - Identifying Performance Obligations and Licensing ("ASU 2016-10”). In May 2016, the FASB issued ASU 2016-11, Revenue from Contracts with Customers (Topic 606) and Derivatives and Hedging (Topic 815) – Rescission of SEC Guidance Because of ASU 2014-09 and 2014-16 ("ASU 2016-11") and ASU 2016-12, Revenue from Contracts with Customers (Topic 606) –Narrow Scope Improvements and Practical Expedients ("ASU 2016-12"). The new ASUs do not change the core principle of the guidance in Topic 606 (as amended by ASU 2014-09), but rather help to provide further interpretive clarifications on the new guidance in ASU 2014-09. ASU 2014-09, as amended by ASU 2015-14, is effective for us in the first quarter of fiscal 2019. Companies are permitted to adopt this new guidance following either a full retrospective or modified retrospective approach. We have established a cross-functional team to assess the potential impact of the new revenue standard. Our assessment process consists of reviewing our current accounting policies and practices to identify potential differences that would result from applying the requirements of the new standard to our revenue contracts and identifying appropriate changes to our business processes, systems and controls to support revenue recognition and disclosure requirements under the new standard. Our assessment is expected to be completed during fiscal 2017. Additionally, we are currently evaluating the potential impact that the implementation of this new revenue standard will have on our consolidated financial statements as well as selection of the method of adoption. We currently do not expect to implement this new standard prior to the required effective date. We do not believe that any other recently issued, but not yet effective accounting standards, if adopted, would have a material impact on our consolidated financial statements.
Contingent Consideration Policy	September 30, 2016 relates to the acquisition of HealthFusion (see Note 3). We assess the fair value of our contingent consideration liability on a recurring basis and any adjustments to fair value subsequent to the measurement period are reflected in the consolidated statements of comprehensive income. Key assumptions include discount rates and probability-adjusted achievement estimates of certain revenue targets that are not observable in the market. The categorization of the framework used to measure fair value of the contingent consideration liability is considered Level 3 due to the subjective nature of the unobservable inputs used.
Non-Recurring Fair Value Measurements	Non-Recurring Fair Value Measurements We have certain assets, including goodwill and other intangible assets, which are measured at fair value on a non-recurring basis and are adjusted to fair value only if an impairment charge is recognized. The categorization of the framework used to measure fair value of the assets is considered Level 3 due to the subjective nature of the unobservable inputs used. During the three and six months ended September 30, 2016, we recorded a $282 adjustment to HealthFusion goodwill related to a final working capital adjustment calculated pursuant to the HealthFusion merger agreement. There were no other adjustments to fair value of such assets.