Accounting Policies (Policies)	3 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements of Aceto Corporation and subsidiaries (“Aceto” or the “Company”) included herein have been prepared by the Company and reflect all adjustments (consisting solely of normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for all periods presented. Interim results are not necessarily indicative of results which may be achieved for the full year. The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses reported in those financial statements and the disclosure of contingent assets and liabilities at the date of the financial statements. These judgments can be subjective and complex, and consequently actual results could differ from those estimates and assumptions. The Company’s most critical accounting policies relate to revenue recognition; allowance for doubtful accounts; inventory; goodwill and other indefinite-life intangible assets; long-lived assets; environmental matters and other contingencies; income taxes; stock-based compensation; and purchase price allocation. These condensed consolidated financial statements do not include all disclosures associated with consolidated financial statements prepared in accordance with GAAP. Accordingly, these statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto contained in the Company’s Form 10-K for the year ended June 30, 2017.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In August 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities which has the objective of improving the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the amendments in ASU 2017-12 make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The amendments in ASU 2017-12 are effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of the provisions of ASU 2017-12. In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting, which provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU 2017-09 is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The Company does not believe this new accounting standard update will have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-04 Intangibles - Goodwill and Other (Topic 350) which would eliminate the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, the amount of an impairment charge would be recognized if the carrying amount of a reporting unit is greater than its fair value. ASU 2017-04 is effective for public companies for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company does not believe this new accounting pronouncement will have a material impact on its consolidated financial statements. In January 2017, the FASB issued ASU 2017-01 Business Combinations (Topic 805): Clarifying 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. ASU 2017-01 is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company does not believe this new accounting pronouncement will have a material impact on its consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company is currently evaluating the impact of the provisions of ASU 2016-15. In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which changes certain aspects of accounting for share-based payments to employees. The Company adopted ASU 2016-09 as of July 1, 2017. ASU 2016-09 requires that all tax benefits and deficiencies related to share-based payments be recognized and recorded through the statement of income for all awards settled or expiring after the adoption of ASU 2016-09. Under prior guidance, tax benefits in excess of compensation costs ("windfalls") were recorded in equity, and any tax deficiencies ("shortfalls") were recorded in equity to the extent of previous windfalls and then to the statement of income. For the three months ended September 30, 2017, the Company recorded $1,128 of additional income tax expense associated with net tax deficiencies. ASU 2016-09 also requires, either prospectively or retrospectively, that all tax-related cash flows resulting from share-based payments be reported as operating activities on the statement of cash flows, a change from prior guidance that required windfall tax benefits to be presented as an inflow from financing activities and an outflow from operating activities on the statement of cash flows. The Company has elected to adopt such presentation on a prospective basis. Additionally, ASU 2016-09 allows entities to make an accounting policy election for the impact of most types of forfeitures on the recognition of expense for share-based payment awards by allowing the forfeitures to be either estimated, as was required under prior guidance, or recognized when they actually occur. Under ASU 2016-09, the Company recognizes forfeitures when they actually occur. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) that replaces existing lease guidance. The new standard is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. The new guidance will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of income. ASU 2016-02 is effective for fiscal years (and interim reporting periods within those years) beginning after December 15, 2018. The Company is currently evaluating the impact of the provisions of ASU 2016-02. In November 2015, the FASB issued ASU 2015-17, Income Taxes (Topic 740) Balance Sheet Classification of Deferred Assets. This ASU is intended to simplify the presentation of deferred taxes on the balance sheet and will require an entity to present all deferred tax assets and deferred tax liabilities as non-current on the balance sheet. Under the prior guidance, entities were required to separately present deferred taxes as current or non-current. Netting deferred tax assets and deferred tax liabilities by tax jurisdiction will still be required under the new guidance. The Company prospectively adopted the provisions of ASU 2015-17, as of July 1, 2017. The Company's prospective adoption of ASU 2015-17 impacts the classification of deferred tax assets and liabilities on any balance sheet that reports the Company's financial position for any date after June 30, 2017. Balance sheets for prior periods have not been adjusted. The adoption of ASU 2015-17 has no impact on the Company's results of operations or cash flows. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330) – Simplifying the Measurement of Inventory. This ASU requires that an entity measure inventory at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company adopted this standard in the first quarter of fiscal year 2018. The adoption of this standard did not have any impact on the condensed consolidated financial statements of the Company. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which is the new comprehensive revenue recognition standard that will supersede all existing revenue recognition guidance under U.S. GAAP. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In August 2015, the FASB subsequently issued ASU 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date, which approved a one year deferral of ASU 2014-09 for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. In March 2016 and April 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers - Principal versus Agent Considerations (Reporting Revenue Gross versus Net), and ASU 2016-10, Revenue from Contracts with Customers - Identifying Performance Obligations and Licensing, respectively, which further clarify the guidance related to those specific topics within ASU 2014-09. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers - Narrow Scope Improvements and Practical Expedients, to reduce the risk of diversity in practice for certain aspects in ASU 2014-09, including collectibility, noncash consideration, presentation of sales tax and transition. Additionally, in December 2016, the FASB issued ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. ASU 2016-20 makes minor corrections or minor improvements to the standard that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. The Company has made progress in its evaluation of the amended guidance, including identification of revenue streams. The Company recognizes revenue from product sales at the time of shipment and passage of title and risk of loss and control of the goods is transferred to the customer. The Company has no acceptance or other post-shipment obligations and does not offer product warranties or services to its customers. Although the Company is continuing to assess the impact of the amended guidance, Aceto generally anticipates that the timing of recognition of revenue will be substantially unchanged under the amended guidance. The Company is continuing to evaluate the impact on certain other transactions including third-party collaborations and other arrangements. The amended guidance will be effective for Aceto in the first quarter of fiscal 2019 and permits adoption under either the full retrospective approach (recognize effects of the amended guidance in each prior reporting period presented) or the modified retrospective approach (recognize the cumulative effect of adoption as an adjustment to retained earnings at the date of initial application). The Company anticipates adopting this amended standard on a modified retrospective basis.

Accounting Policies (Policies)

3 Months Ended

Sep. 30, 2017

Basis of Presentation

The condensed consolidated financial statements of Aceto Corporation and subsidiaries (“Aceto” or the “Company”) included herein have been prepared by the Company and reflect all adjustments (consisting solely of normal recurring adjustments) necessary to present fairly the financial position, results of operations and cash flows for all periods presented. Interim results are not necessarily indicative of results which may be achieved for the full year.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses reported in those financial statements and the disclosure of contingent assets and liabilities at the date of the financial statements. These judgments can be subjective and complex, and consequently actual results could differ from those estimates and assumptions. The Company’s most critical accounting policies relate to revenue recognition; allowance for doubtful accounts; inventory; goodwill and other indefinite-life intangible assets; long-lived assets; environmental matters and other contingencies; income taxes; stock-based compensation; and purchase price allocation.

These condensed consolidated financial statements do not include all disclosures associated with consolidated financial statements prepared in accordance with GAAP. Accordingly, these statements should be read in conjunction with the Company’s consolidated financial statements and notes thereto contained in the Company’s Form 10-K for the year ended June 30, 2017.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In August 2017, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities which has the objective of improving the financial reporting of hedging relationships to better portray the economic results of an entity’s risk management activities in its financial statements. In addition to that main objective, the amendments in ASU 2017-12 make certain targeted improvements to simplify the application of the hedge accounting guidance in current GAAP. The amendments in ASU 2017-12 are effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of the provisions of ASU 2017-12.

In May 2017, the FASB issued ASU 2017-09, Compensation – Stock Compensation (Topic 718): Scope of Modification Accounting, which provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. ASU 2017-09 is effective for all entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Early adoption is permitted. The Company does not believe this new accounting standard update will have a material impact on its consolidated financial statements.

In January 2017, the FASB issued ASU 2017-04 Intangibles - Goodwill and Other (Topic 350) which would eliminate the requirement to calculate the implied fair value of goodwill to measure a goodwill impairment charge. Instead, the amount of an impairment charge would be recognized if the carrying amount of a reporting unit is greater than its fair value. ASU 2017-04 is effective for public companies for fiscal years beginning after December 15, 2019. Early adoption is permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company does not believe this new accounting pronouncement will have a material impact on its consolidated financial statements.

In January 2017, the FASB issued ASU 2017-01 Business Combinations (Topic 805): Clarifying 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. ASU 2017-01 is effective for public companies for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company does not believe this new accounting pronouncement will have a material impact on its consolidated financial statements.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments, which addresses eight specific cash flow issues with the objective of reducing diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. ASU 2016-15 is effective for public business entities for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company is currently evaluating the impact of the provisions of ASU 2016-15.

In March 2016, the FASB issued ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, which changes certain aspects of accounting for share-based payments to employees. The Company adopted ASU 2016-09 as of July 1, 2017. ASU 2016-09 requires that all tax benefits and deficiencies related to share-based payments be recognized and recorded through the statement of income for all awards settled or expiring after the adoption of ASU 2016-09. Under prior guidance, tax benefits in excess of compensation costs ("windfalls") were recorded in equity, and any tax deficiencies ("shortfalls") were recorded in equity to the extent of previous windfalls and then to the statement of income. For the three months ended September 30, 2017, the Company recorded $1,128 of additional income tax expense associated with net tax deficiencies. ASU 2016-09 also requires, either prospectively or retrospectively, that all tax-related cash flows resulting from share-based payments be reported as operating activities on the statement of cash flows, a change from prior guidance that required windfall tax benefits to be presented as an inflow from financing activities and an outflow from operating activities on the statement of cash flows. The Company has elected to adopt such presentation on a prospective basis. Additionally, ASU 2016-09 allows entities to make an accounting policy election for the impact of most types of forfeitures on the recognition of expense for share-based payment awards by allowing the forfeitures to be either estimated, as was required under prior guidance, or recognized when they actually occur. Under ASU 2016-09, the Company recognizes forfeitures when they actually occur.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) that replaces existing lease guidance. The new standard is intended to provide enhanced transparency and comparability by requiring lessees to record right-of-use assets and corresponding lease liabilities on the balance sheet. The new guidance will continue to classify leases as either finance or operating, with classification affecting the pattern of expense recognition in the statement of income. ASU 2016-02 is effective for fiscal years (and interim reporting periods within those years) beginning after December 15, 2018. The Company is currently evaluating the impact of the provisions of ASU 2016-02.

In November 2015, the FASB issued ASU 2015-17, Income Taxes (Topic 740) Balance Sheet Classification of Deferred Assets. This ASU is intended to simplify the presentation of deferred taxes on the balance sheet and will require an entity to present all deferred tax assets and deferred tax liabilities as non-current on the balance sheet. Under the prior guidance, entities were required to separately present deferred taxes as current or non-current. Netting deferred tax assets and deferred tax liabilities by tax jurisdiction will still be required under the new guidance. The Company prospectively adopted the provisions of ASU 2015-17, as of July 1, 2017. The Company's prospective adoption of ASU 2015-17 impacts the classification of deferred tax assets and liabilities on any balance sheet that reports the Company's financial position for any date after June 30, 2017. Balance sheets for prior periods have not been adjusted. The adoption of ASU 2015-17 has no impact on the Company's results of operations or cash flows.

In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330) – Simplifying the Measurement of Inventory. This ASU requires that an entity measure inventory at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal and transportation. This guidance is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company adopted this standard in the first quarter of fiscal year 2018. The adoption of this standard did not have any impact on the condensed consolidated financial statements of the Company.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), which is the new comprehensive revenue recognition standard that will supersede all existing revenue recognition guidance under U.S. GAAP. The standard's core principle is that a company will recognize revenue when it transfers promised goods or services to a customer in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In August 2015, the FASB subsequently issued ASU 2015-14, Revenue from Contracts with Customers - Deferral of the Effective Date, which approved a one year deferral of ASU 2014-09 for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. In March 2016 and April 2016, the FASB issued ASU 2016-08, Revenue from Contracts with Customers - Principal versus Agent Considerations (Reporting Revenue Gross versus Net), and ASU 2016-10, Revenue from Contracts with Customers - Identifying Performance Obligations and Licensing, respectively, which further clarify the guidance related to those specific topics within ASU 2014-09. In May 2016, the FASB issued ASU 2016-12, Revenue from Contracts with Customers - Narrow Scope Improvements and Practical Expedients, to reduce the risk of diversity in practice for certain aspects in ASU 2014-09, including collectibility, noncash consideration, presentation of sales tax and transition. Additionally, in December 2016, the FASB issued ASU 2016-20, Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers. ASU 2016-20 makes minor corrections or minor improvements to the standard that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. The Company has made progress in its evaluation of the amended guidance, including identification of revenue streams. The Company recognizes revenue from product sales at the time of shipment and passage of title and risk of loss and control of the goods is transferred to the customer. The Company has no acceptance or other post-shipment obligations and does not offer product warranties or services to its customers. Although the Company is continuing to assess the impact of the amended guidance, Aceto generally anticipates that the timing of recognition of revenue will be substantially unchanged under the amended guidance. The Company is continuing to evaluate the impact on certain other transactions including third-party collaborations and other arrangements. The amended guidance will be effective for Aceto in the first quarter of fiscal 2019 and permits adoption under either the full retrospective approach (recognize effects of the amended guidance in each prior reporting period presented) or the modified retrospective approach (recognize the cumulative effect of adoption as an adjustment to retained earnings at the date of initial application). The Company anticipates adopting this amended standard on a modified retrospective basis.