Stock-Based Compensation	9 Months Ended
Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	(4) Stock-Based Compensation Under the Aceto Corporation 2015 Equity Participation Plan (the “2015 Plan”), grants of stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards (“Stock Awards”) may be offered to employees, non-employee directors, consultants and advisors of the Company, including the chief executive officer, chief financial officer and other named executive officers. The maximum number of shares of common stock of the Company that may be issued pursuant to Stock Awards granted under the 2015 Plan will not exceed, in the aggregate, 4,250 shares. Performance-based awards may be granted, vested and paid based on the attainment of specified performance goals. Under the Aceto Corporation 2010 Equity Participation Plan (as amended and restated in 2012, the “2010 Plan”), grants of stock options, restricted stock, restricted stock units, stock appreciation rights, and stock bonuses may be made to employees, non-employee directors and consultants of the Company. The maximum number of shares of common stock of the Company that may be issued pursuant to awards granted under the 2010 Plan will not exceed, in the aggregate, 5,250 shares. In addition, restricted stock may be granted to an eligible participant in lieu of a portion of any annual cash bonus earned by such participant. Such award may include additional shares of restricted stock (premium shares) greater than the portion of bonus paid in restricted stock. The restricted stock award is vested at issuance and the restrictions lapse ratably over a period of years as determined by the Board of Directors, generally three years. The premium shares vest when all the restrictions lapse, provided that the participant remains employed by the Company at that time. During the nine months ended March 31, 2018, the Company granted 490 shares of restricted common stock to its employees that vest over three years and 27 shares of restricted stock to its non-employee directors, which vest over approximately one year. In addition, the Company also issued a target grant of 203 performance-vested restricted stock units, which grant could be as much as 355 units if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant. During the year ended June 30, 2017, the Company granted 277 shares of restricted common stock to its employees that vest over three years and 22 shares of restricted common stock to its non-employee directors, which vest over approximately one year as well as 42 restricted stock units that have varying vest dates through July 2017. In addition, the Company also issued a target grant of 160 performance-vested restricted stock units, which grant could be as much as 280 if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant. For the three and nine months ended March 31, 2018, the Company recorded stock-based compensation expense of approximately $1,931 and $6,426, respectively, related to restricted common stock and restricted stock units. Included in the $6,426 for the nine months ended March 31, 2018 is $431 in stock-based compensation expense associated with the retirement of a Chief Financial Officer in March 2018 and $2,017 in stock-based compensation expense associated with the separation of the Company’s former Chief Executive Officer in September 2017. For the three and nine months ended March 31, 2017, the Company recorded stock-based compensation expense of approximately $1,506 and $5,213, respectively, related to restricted common stock and restricted stock units. As of March 31, 2018, the total unrecognized stock-based compensation cost is approximately $7,864.

Stock-Based Compensation

9 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

(4) Stock-Based Compensation

Under the Aceto Corporation 2015 Equity Participation Plan (the “2015 Plan”), grants of stock options, stock appreciation rights, restricted stock, restricted stock units and other stock-based awards (“Stock Awards”) may be offered to employees, non-employee directors, consultants and advisors of the Company, including the chief executive officer, chief financial officer and other named executive officers. The maximum number of shares of common stock of the Company that may be issued pursuant to Stock Awards granted under the 2015 Plan will not exceed, in the aggregate, 4,250 shares. Performance-based awards may be granted, vested and paid based on the attainment of specified performance goals.

Under the Aceto Corporation 2010 Equity Participation Plan (as amended and restated in 2012, the “2010 Plan”), grants of stock options, restricted stock, restricted stock units, stock appreciation rights, and stock bonuses may be made to employees, non-employee directors and consultants of the Company. The maximum number of shares of common stock of the Company that may be issued pursuant to awards granted under the 2010 Plan will not exceed, in the aggregate, 5,250 shares. In addition, restricted stock may be granted to an eligible participant in lieu of a portion of any annual cash bonus earned by such participant. Such award may include additional shares of restricted stock (premium shares) greater than the portion of bonus paid in restricted stock. The restricted stock award is vested at issuance and the restrictions lapse ratably over a period of years as determined by the Board of Directors, generally three years. The premium shares vest when all the restrictions lapse, provided that the participant remains employed by the Company at that time.

During the nine months ended March 31, 2018, the Company granted 490 shares of restricted common stock to its employees that vest over three years and 27 shares of restricted stock to its non-employee directors, which vest over approximately one year. In addition, the Company also issued a target grant of 203 performance-vested restricted stock units, which grant could be as much as 355 units if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant.

During the year ended June 30, 2017, the Company granted 277 shares of restricted common stock to its employees that vest over three years and 22 shares of restricted common stock to its non-employee directors, which vest over approximately one year as well as 42 restricted stock units that have varying vest dates through July 2017. In addition, the Company also issued a target grant of 160 performance-vested restricted stock units, which grant could be as much as 280 if certain performance criteria and market conditions are met. These performance-vested restricted stock units will cliff vest 100% at the end of the third year following grant in accordance with the performance metrics set forth in the applicable employee performance-vested restricted stock unit grant.

For the three and nine months ended March 31, 2018, the Company recorded stock-based compensation expense of approximately $1,931 and $6,426, respectively, related to restricted common stock and restricted stock units. Included in the $6,426 for the nine months ended March 31, 2018 is $431 in stock-based compensation expense associated with the retirement of a Chief Financial Officer in March 2018 and $2,017 in stock-based compensation expense associated with the separation of the Company’s former Chief Executive Officer in September 2017. For the three and nine months ended March 31, 2017, the Company recorded stock-based compensation expense of approximately $1,506 and $5,213, respectively, related to restricted common stock and restricted stock units. As of March 31, 2018, the total unrecognized stock-based compensation cost is approximately $7,864.