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Basis of Presentation Change in Accounting Principle (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income $ 0us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome $ 0us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome $ 0us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome $ 1,167us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome
Net Sales Impact [Member] [Member]        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income       $ 1,200us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome
/ us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis
= ait_NetSalesImpactMemberMember