CONDENSED FINANCIAL INFORMATION OF GNC HOLDINGS, INC. (Details 2) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements
Operating income	$ 83,714	$ 82,150	$ 117,638	$ 109,605	$ 88,481	$ 108,725	$ 121,051	$ 121,255	$ 393,107	$ 439,512	$ 460,498
Interest expense, net									50,936	46,708	53,029
Income before income taxes									342,171	392,804	407,469
Income tax benefit									122,872	136,932	142,448
Net income	$ 42,922	$ 45,750	$ 67,357	$ 63,270	$ 51,768	$ 64,314	$ 69,887	$ 69,903	219,299	255,872	265,021
Other comprehensive loss									(5,820)	(5,784)	(1,092)
Comprehensive income									$ 213,479	$ 250,088	$ 263,929
Earning per share:
Basic (in usd per share)	$ 0.54	$ 0.55	$ 0.79	$ 0.72	$ 0.58	$ 0.72	$ 0.77	$ 0.75	$ 2.61	$ 2.83	$ 2.75
Diluted (in usd per share)	$ 0.54	$ 0.54	$ 0.79	$ 0.72	$ 0.58	$ 0.71	$ 0.77	$ 0.75	$ 2.60	$ 2.81	$ 2.72
Weighted average common shares outstanding (Note 13):
Basic (in shares)	78,775	83,669	85,501	87,865	88,824	89,814	90,414	92,975	83,927	90,493	96,481
Diluted (in shares)	79,008	83,958	85,777	88,105	89,044	90,233	90,931	93,684	84,186	90,918	97,383
Common stock dividends (in USD per share)									$ 0.72	$ 0.64	$ 0.60
GNC Holdings
Condensed Financial Statements
Selling, general and administrative									$ 1,645	$ 1,552	$ 749
Subsidiary income									223,090	257,045	265,522
Operating income									221,445	255,493	264,773
Interest expense, net									4,241	153	44
Income before income taxes									217,204	255,340	264,729
Income tax benefit									(2,095)	(532)	(292)
Net income									219,299	255,872	265,021
Foreign currency translation loss									(7,439)	(5,784)	(1,092)
Other comprehensive loss									$ (5,820)	$ (5,784)	$ (1,092)
Weighted average common shares outstanding (Note 13):
Basic (in shares)									83,927	90,493	96,481
Diluted (in shares)									84,186	90,918	97,383
Common stock dividends (in USD per share)									$ 0.72	$ 0.64	$ 0.60
Release of cumulative translation loss to earnings related to substantial liquidation of Discount Supplements | GNC Holdings
Condensed Financial Statements
Foreign currency translation loss									$ 1,619	$ 0	$ 0