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Statements of Operations-Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Depreciation and amortization        
Depreciation of property, plant and equipment $ 4,066us-gaap_Depreciation $ 3,920us-gaap_Depreciation $ 12,417us-gaap_Depreciation $ 11,878us-gaap_Depreciation
Amortization of intangible assets 1,233us-gaap_AmortizationOfIntangibleAssets 1,202us-gaap_AmortizationOfIntangibleAssets 3,359us-gaap_AmortizationOfIntangibleAssets 3,737us-gaap_AmortizationOfIntangibleAssets
Amortization of other assets 57pahc_AmortizationOfOtherAssets    174pahc_AmortizationOfOtherAssets   
Depreciation and amortization $ 5,356us-gaap_DepreciationDepletionAndAmortization $ 5,122us-gaap_DepreciationDepletionAndAmortization $ 15,950us-gaap_DepreciationDepletionAndAmortization $ 15,615us-gaap_DepreciationDepletionAndAmortization