FAIR VALUE - Contingent Consideration Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Apr. 01, 2020
Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of contingent consideration arrangement	$ 34,250	$ 31,140
Fusion Packaging
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of contingent consideration arrangement	28,300		$ 19,100
Fusion Packaging | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of contingent consideration arrangement	28,340	26,910
Noble | Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of contingent consideration arrangement	$ 5,910	$ 4,230