SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF GNC HOLDINGS, INC. - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Forward contracts for the issuance of convertible preferred stock	$ 0	$ 88,942
Prepaid and other current assets	24,880	55,109
Total current assets	639,761	804,164
Long-term assets:
Deferred Income Tax Assets, Net	0	8,776
Total long-term assets	1,010,826	723,686
Total assets	1,650,587	1,527,850
Current liabilities:
Intercompany payable	11,720	0
Convertible debt current		0
Deferred revenue and other current liabilities	105,792	120,169
Total current liabilities	560,825	427,707
Deferred tax liabilities	31,586	39,834
Total long-term liabilities	1,085,630	1,115,649
Total liabilities	1,646,455	1,543,356
Series A convertible preferred stock	211,395	98,804	$ 0
Stockholders' deficit:
Class A common stock	131	130
Additional paid-in capital	1,012,076	1,007,827
Retained earnings	518,605	613,637
Treasury stock, at cost	(1,725,349)	(1,725,349)
Accumulated other comprehensive loss	(12,726)	(10,555)
Total stockholders' deficit	(207,263)	(114,310)	$ (185,921)	$ (117,563)
Total liabilities, mezzanine equity and stockholders' deficit	1,650,587	1,527,850
GNC Holdings
Current assets:
Cash and cash equivalents	0	0
Intercompany receivable	1,466	5,356
Forward contracts for the issuance of convertible preferred stock	0	88,942
Prepaid and other current assets	241	199
Total current assets	1,707	94,497
Long-term assets:
Deferred Income Tax Assets, Net	608	0
Intercompany receivable	144,621	164,300
Investment in subsidiaries	25,343	(44,243)
Total long-term assets	170,572	120,057
Total assets	172,279	214,554
Current liabilities:
Intercompany payable	12,818	0
Convertible debt current	154,656
Deferred revenue and other current liabilities	673	1,099
Total current liabilities	168,147	1,099
Deferred tax liabilities	0	2,860
Convertible non current	0	175,504
Intercompany loan	0	50,597
Total long-term liabilities	0	228,961
Total liabilities	168,147	230,060
Series A convertible preferred stock	211,395	98,804
Stockholders' deficit:
Additional paid-in capital	1,012,076	1,007,827
Retained earnings	518,605	613,637
Treasury stock, at cost	(1,725,349)	(1,725,349)
Accumulated other comprehensive loss	(12,726)	(10,555)
Total stockholders' deficit	(207,263)	(114,310)
Total liabilities, mezzanine equity and stockholders' deficit	172,279	214,554
Class A Common Stock | GNC Holdings
Stockholders' deficit:
Class A common stock	$ 131	$ 130