RELATED PARTY TRANSACTIONS (Details) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended
	Oct. 31, 2013	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2009	Jan. 31, 2007	Mar. 31, 2006
Related Party Transaction [Line Items]
Reimbursement Agreements termination notice period			90 days
Conversion ratio, outstanding principal amount per share of common stock issued (in dollars per share)						$ 5.21
Number of days demand registration may be postponed			30 days
Products Corporation
Related Party Transaction [Line Items]
Percentage of voting capital stock			66.00%
Registration Rights Agreement | 2003 Equity Rights Offering
Related Party Transaction [Line Items]
Equity right offering value	$ 50,000,000
Registration Rights Agreement | 2006 Equity Rights Offering
Related Party Transaction [Line Items]
Equity right offering value								$ 110,000,000
Registration Rights Agreement | 2007 Equity Rights Offering
Related Party Transaction [Line Items]
Equity right offering value							$ 100,000,000
Class A Common Stock
Related Party Transaction [Line Items]
Shares converted in Offering	3,125,000					9,336,905
Percentage ownership of outstanding common stock		86.10%	86.10%
MacAndrews & Forbes | Reimbursements
Related Party Transaction [Line Items]
Payments to related party		$ 1,300,000			$ 5,300,000
Related party income			$ 600,000	$ 200,000
Receivable from related party		100,000	100,000		100,000
Majority Shareholder | Related party expense, other advertising coupon redemption and raw material supply
Related Party Transaction [Line Items]
Payments to related party			200,000	800,000
Related party expenses			8,700,000	$ 28,200,000
Payable to related party		300,000	300,000		300,000
Majority Shareholder | Related party expense, coupon redemption services
Related Party Transaction [Line Items]
Payable to related party		$ 1,600,000	$ 1,600,000		$ 600,000