Acquisitions and Disposals (Fiscal 2015) (Narrative) (Details) € in Thousands, CAD in Thousands, $ in Thousands	3 Months Ended					9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($) shares	Sep. 30, 2015 EUR (€) shares	Mar. 31, 2015 USD ($)	Mar. 31, 2015 CAD	Sep. 30, 2014 USD ($) shares	Mar. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Jul. 24, 2015 USD ($)	Mar. 04, 2015 USD ($)	Feb. 20, 2015 USD ($)	Jul. 17, 2014 USD ($)	Jun. 30, 2014 USD ($)
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 4,154		$ 14,621			$ 14,621
Business Acquisition, Cost of Acquired Entity, Cash Paid							$ 91,893
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 2,140						2,305
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years	10 years
Payments to Acquire Businesses, Net of Cash Acquired	$ 25,233				$ 20,310
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee	0				5,334
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned							19,690
Mona [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses and Interest in Affiliates	25,233	€ 23,012
Business Acquisition, Cost of Acquired Entity, Cash Paid	$ 25,233
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares	240,207	240,207
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned								$ 16,308
Noncash or Part Noncash Acquisition, Debt Assumed | €		€ 15,951
Hain Pure Protein [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Cash Paid							20,310
Business Acquisition, Percentage of Voting Interests Acquired											51.30%
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures												$ 30,740
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee					$ 5,334
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares					462,856
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned											$ 19,690
Belvedere [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Cash Paid				CAD 17,454			13,988
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High										$ 4,000
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned										$ 0
Empire Kosher [Member]
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired									81.00%		19.00%
Noncontrolling Interest in Joint Ventures									$ 6,864
Payments to Acquire Businesses, Net of Cash Acquired							$ 57,595
Gain (Loss) on Disposition of Stock in Subsidiary or Equity Method Investee			$ 2,922
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned									$ 0
Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life						10 years 9 months
Trade Names [Member]
Business Acquisition [Line Items]
Indefinite-lived Intangible Assets Acquired	$ 12,463					$ 45,667