Segment Information (Details) $ in Thousands	3 Months Ended
Dec. 31, 2015 USD ($) segment store item	Dec. 31, 2014 USD ($)
Segment Information
Number of business segments \| segment	4
Net sales	$ 801,990	$ 825,771
Income (loss) from operations	42,041	91,818
Depreciation and amortization	31,852	28,065
Capital expenditures	40,038	19,090
Facility restructuring charges (See Note 3)	5,494
Impairment on furniture and fixtures	11,656
Operating segments
Segment Information
Net sales	801,990	825,771
Income (loss) from operations	77,129	114,340
Depreciation and amortization	19,617	17,776
Capital expenditures	29,737	11,812
Corporate/Manufacturing
Segment Information
Income (loss) from operations	(35,088)	(22,522)
Depreciation and amortization	12,235	10,289
Capital expenditures	10,301	7,278
Consumer Products Group \| Operating segments
Segment Information
Net sales	472,430	494,705
Income (loss) from operations	46,338	61,148
Depreciation and amortization	9,359	9,002
Capital expenditures	$ 7,861	73
Holland & Barrett International \| Operating segments
Segment Information
Number of stores \| item	1,088
Net sales	$ 218,461	213,597
Income (loss) from operations	38,839	46,315
Depreciation and amortization	6,472	5,049
Capital expenditures	$ 21,228	10,703
Holland & Barrett International \| Operating segments \| Holland & Barrett
Segment Information
Number of stores \| store	857
Holland & Barrett International \| Operating segments \| Holland & Barrett \| U.K.
Segment Information
Number of stores \| store	701
Holland & Barrett International \| Operating segments \| Holland & Barrett \| China
Segment Information
Number of franchised stores \| store	35
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Singapore
Segment Information
Number of franchised stores \| store	27
Holland & Barrett International \| Operating segments \| Holland & Barrett \| United Arab Emirates
Segment Information
Number of franchised stores \| store	19
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Cyprus
Segment Information
Number of franchised stores \| store	11
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Malta
Segment Information
Number of franchised stores \| store	5
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Kuwait
Segment Information
Number of franchised stores \| store	4
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Gibraltar
Segment Information
Number of franchised stores \| store	1
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Spain
Segment Information
Number of franchised stores \| store	3
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Ireland
Segment Information
Number of stores \| store	50
Holland & Barrett International \| Operating segments \| Holland & Barrett \| Sweden
Segment Information
Number of stores \| store	1
Holland & Barrett International \| Operating segments \| De Tuinen \| Netherlands
Segment Information
Number of co-branded stores, including owned stores \| store	167
Number of franchised stores \| store	5
Holland & Barrett International \| Operating segments \| GNC (UK) stores \| U.K.
Segment Information
Number of stores \| store	46
Holland & Barrett International \| Operating segments \| Essenza \| Belgium
Segment Information
Number of stores \| store	18
Puritan's Pride \| Operating segments
Segment Information
Net sales	$ 61,552	63,564
Income (loss) from operations	5,089	5,677
Depreciation and amortization	2,914	2,830
Capital expenditures	20	13
Vitamin World
Segment Information
Impairment on furniture and fixtures	11,656
Vitamin World \| Operating segments
Segment Information
Net sales	49,547	53,905
Income (loss) from operations	(13,137)	1,200
Depreciation and amortization	872	895
Capital expenditures	$ 628	$ 1,023
Vitamin World \| Operating segments \| Vitamin World
Segment Information
Number of stores \| store	378

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