Correction of Immaterial Errors To Prior Period Financial Statements - Segment Net Sales and Operating Income (Unaudited) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales	$ 739,999	$ 743,437	$ 1,421,463	$ 1,411,164
Operating Income	41,400	90,078	55,151	144,350
As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		752,589		1,439,777
Operating Income		87,722		145,190
Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		(9,152)		(28,613)
Operating Income		2,356		(840)
Operating Segments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		743,437		1,411,164
Operating Income	60,267	94,618	90,917	158,879
Operating Segments [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		752,589		1,439,777
Operating Income		91,803		158,839
Operating Segments [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		(9,152)		(28,613)
Operating Income		2,815		40
Operating Segments [Member] | United States [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		314,685		617,316
Operating Income	42,552	50,940	64,615	92,447
Operating Segments [Member] | United States [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		322,878		637,464
Operating Income		48,315		92,203
Operating Segments [Member] | United States [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		(8,193)		(20,148)
Operating Income		2,625		244
Operating Segments [Member] | United Kingdom [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		191,254		352,109
Operating Income	6,697	18,425	11,247	28,267
Operating Segments [Member] | United Kingdom [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		194,226		359,580
Operating Income		18,768		28,972
Operating Segments [Member] | United Kingdom [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		(2,972)		(7,471)
Operating Income		(343)		(705)
Operating Segments [Member] | Hain Pure Protein [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		144,192		267,247
Operating Income	3,541	18,162	2,523	28,651
Operating Segments [Member] | Hain Pure Protein [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		141,706		265,694
Operating Income		18,125		28,396
Operating Segments [Member] | Hain Pure Protein [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		2,486		1,553
Operating Income		37		255
Operating Segments [Member] | Rest of World [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		93,306		174,492
Operating Income	7,477	7,091	12,532	9,514
Operating Segments [Member] | Rest of World [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		93,779		177,039
Operating Income		6,595		9,268
Operating Segments [Member] | Rest of World [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		(473)		(2,547)
Operating Income		496		246
Corporate and Other [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating Income	$ (18,867)	(4,540)	$ (35,766)	(14,529)
Corporate and Other [Member] | As Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating Income		(4,081)		(13,649)
Corporate and Other [Member] | Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating Income		$ (459)		$ (880)