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Stock Incentive Plan - Additional Information (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2019 | May 31, 2018 | Mar. 31, 2008
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available for grant |  | 0 |  |  |  |
Option |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock-based compensation expense current year |  | $ 0 |  |  |  |
Option | 2008 Incentive Plan (the "Incentive Plan") |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock options, stock awards and other incentives authorized amount |  |  |  |  |  | 6,630,000
Option | 2008 Incentive Plan (the "Incentive Plan") | Common stock-Class A |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available for grant |  | 5,081,620 |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares granted by PAHC's Compensation Committee |  |  |  |  | 250,000 |
Stock-based compensation expense current year |  | $ 1,129 | $ 2,259 | $ 2,259 |  |
Performance-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available for grant | 200,000 |  |  |  |  |
Number of shares vested | 0 |  |  |  |  |
Time-Based RSUs |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Number of shares available for grant | 50,000 |  |  |  |  |

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