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Stock Incentive Plan - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	May 31, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2008
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		4,881,620
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
Percentage of risk-free rate of return		2.59%
Percentage of expected volatility		31.94%
Percentage of expected dividend yield		0.95%
Stock-based compensation expense current year		$ 2,259	$ 2,259	$ 334
Expected stock-based compensation expense in 2021		$ 1,129
Restricted Stock Units (RSUs) | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest increments under restricted stock units on the 90-day average	15.00%
Share price	$ 30
Restricted Stock Units (RSUs) | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of vest increments under restricted stock units on the 90-day average	100.00%
Share price	$ 80

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