SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF GNC HOLDINGS, INC. (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 226,217	$ 158,541	$ 128,438	$ 193,902
Prepaids and other current assets	47,081	39,016
Total current assets	966,047	818,797
Long-term assets:
Total long-term assets	1,774,300	1,733,243
Total assets	2,740,347	2,552,040	2,429,587
Current liabilities:
Accounts payable	135,164	125,165
Deferred revenue and other current liabilities	106,459	116,337
Total current liabilities	247,066	245,319
Total liabilities	1,924,768	1,670,001
Stockholders' equity:
Paid-in-capital	847,886	810,094
Retained earnings	700,108	492,687
Treasury stock, at cost	(734,482)	(423,900)
Accumulated other comprehensive income	1,955	3,047
Total stockholders' equity	815,579	882,039	978,462	619,483
Total liabilities and stockholders' equity	2,740,347	2,552,040
Class A Common Stock
Stockholders' equity:
Common stock	112	111
Parent Company
Current assets:
Cash and cash equivalents	282	880	32,989	43,261
Prepaids and other current assets	285	70
Total current assets	567	950
Long-term assets:
Intercompanies	1,069	3,079
Investment in subsidiaries	962,469	963,883
Total long-term assets	963,538	966,962
Total assets	964,105	967,912
Current liabilities:
Accounts payable		73
Deferred revenue and other current liabilities	356	330
Total current liabilities	356	403
Intercompany Loan	148,170	85,470
Total liabilities	148,526	85,873
Stockholders' equity:
Paid-in-capital	847,886	810,094
Retained earnings	700,108	492,687
Treasury stock, at cost	(734,482)	(423,900)
Accumulated other comprehensive income	1,955	3,047
Total stockholders' equity	815,579	882,039
Total liabilities and stockholders' equity	964,105	967,912
Parent Company | Class A Common Stock
Stockholders' equity:
Common stock	$ 112	$ 111