EXIT AND DISPOSAL ACTIVITIES - Additional Information (Details) $ in Millions	1 Months Ended	12 Months Ended
Apr. 30, 2020 Position	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($) Position
Restructuring Cost And Reserve [Line Items]
Severance expense \| $		$ 0.5	$ 1.5
Trevose, Pennsylvania
Restructuring Cost And Reserve [Line Items]
Number of positions reduced \| Position	58		200

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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