CONDENSED FINANCIAL INFORMATION OF GNC HOLDINGS, INC. (Details 3) - USD ($) $ 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
Cash flows from operating activities:
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 operating activities									5,298	13,330	(1,161)
Net cash provided by operating activities									354,533	303,785	239,446
Cash flows from financing activities:
Proceeds from issuance of convertible notes									0	0	249,552
Debt issuance costs on convertible senior notes									(8,225)	0	(2,397)
Proceeds from exercise of stock options									(1,744)	(22,170)	(14,588)
Minimum tax withholding requirements									(574)	(762)	(1,327)
Repurchase of treasury stock									(479,799)	(283,226)	(309,255)
Dividend payment									(59,648)	(57,491)	(57,437)
Net cash used in financing activities									(384,458)	(321,009)	(94,286)
Net (decrease) increase in cash and cash equivalents									(77,372)	(92,383)	67,676
Beginning balance, cash and cash equivalents				133,834				226,217	133,834	226,217	158,541
Ending balance, cash and cash equivalents	56,462				133,834				56,462	133,834	226,217
GNC Holdings
Cash flows from operating activities:
Net income									219,299	255,872	265,021
Equity in income of subsidiaries									(223,090)	(257,045)	(265,522)
Dividends received									422,355	317,808	289,300
Other operating activities									4,738	2,393	1,334
Net cash provided by operating activities									423,302	319,028	290,133
Cash flows from financing activities:
Loan from a subsidiary									0	0	62,700
Loan to a subsidiary									(164,300)	0	0
Proceeds from issuance of convertible notes									287,500	0	0
Debt issuance costs on convertible senior notes									(8,225)	0	0
Proceeds from exercise of stock options									(1,744)	(22,170)	(14,588)
Minimum tax withholding requirements									(574)	(762)	(1,327)
Repurchase of treasury stock									(479,799)	(283,226)	(309,255)
Dividend payment									(59,648)	(57,491)	(57,437)
Net cash used in financing activities									(423,302)	(319,309)	(290,731)
Net (decrease) increase in cash and cash equivalents									0	(281)	(598)
Beginning balance, cash and cash equivalents				$ 1				$ 282	1	282	880
Ending balance, cash and cash equivalents	$ 1				$ 1				$ 1	$ 1	$ 282