SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF GNC HOLDINGS, INC. - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 64,001	$ 34,464	$ 56,462	$ 133,834
Prepaid and other current assets	42,320	39,400
Total current assets	739,829	786,254
Long-term assets:
Total long-term assets	776,732	1,269,588
Total assets	1,516,561	2,055,842
Current liabilities:
Deferred revenue and other current liabilities	108,672	115,171
Total current liabilities	261,690	307,666
Total long-term liabilities	1,416,865	1,843,223
Total liabilities	1,678,555	2,150,889
Stockholders' deficit:
Class A common stock	130	114
Additional paid-in capital	1,001,315	922,687
Retained earnings	567,741	716,198
Treasury stock, at cost	(1,725,349)	(1,725,349)
Accumulated other comprehensive loss	(5,831)	(8,697)
Total stockholders' deficit	(161,994)	(95,047)	468,561	756,043
Total liabilities and stockholders' deficit	1,516,561	2,055,842
GNC Holdings
Current assets:
Cash and cash equivalents	20	0	$ 1	$ 1
Prepaid and other current assets	9,743	191
Total current assets	9,763	191
Long-term assets:
Intercompany receivable	164,300	164,300
Investment in subsidiaries	(7,691)	149,933
Total long-term assets	156,609	314,233
Total assets	166,372	314,424
Current liabilities:
Intercompany payable	4,055	404
Deferred revenue and other current liabilities	1,143	2,274
Total current liabilities	5,198	2,678
Deferred tax liabilities	5,742	12,550
Convertible senior notes	167,898	245,273
Intercompany loan	149,528	148,970
Total long-term liabilities	323,168	406,793
Total liabilities	328,366	409,471
Stockholders' deficit:
Additional paid-in capital	1,001,315	922,687
Retained earnings	567,741	716,198
Treasury stock, at cost	(1,725,349)	(1,725,349)
Accumulated other comprehensive loss	(5,831)	(8,697)
Total stockholders' deficit	(161,994)	(95,047)
Total liabilities and stockholders' deficit	166,372	314,424
Class A Common Stock | GNC Holdings
Stockholders' deficit:
Class A common stock	$ 130	$ 114