BASIS OF PRESENTATION AND SUMMARY OF ACCOUNTING POLICIES - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Sep. 30, 2020
Schedule Of Significant Accounting Policies [Line Items]
Percentage of total annual net sales in the third and fourth quarters			62.00%	60.00%
Restructuring expenses	$ 0	$ 0			$ 0	$ 253
Employee Severance | International
Schedule Of Significant Accounting Policies [Line Items]
Restructuring expenses		300				300
Receivables Purchase Agreement
Schedule Of Significant Accounting Policies [Line Items]
Sale of receivables	33,700	43,000			113,200	116,900
Receivables sold outstanding	15,800	26,700			15,800	26,700
Receivables Purchase Agreement | Selling, general and administrative expense
Schedule Of Significant Accounting Policies [Line Items]
Charge related to sale of receivables	$ 100	$ 100			$ 300	$ 400