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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PPE and Intangibles (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Impairment loss related to property and equipment recognized	$ 0	$ 0	$ 0
Assets Held-for-sale, Not Part of Disposal Group	0	0
Impairment of Intangible Assets, Finite-lived	2,374	446	75
Goodwill, Impairment Loss	0	0	0
Research and Development Expense	11,369	16,001	19,806
Allocated Share-based Compensation Expense	10,400	12,800	9,100
Valuation allowance	$ 450	263
Minimum
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Maximum
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
ANI Canada [Member]
Valuation allowance				$ 1,900
Arthur Przybyl [Member]
Allocated Share-based Compensation Expense		3,400
Employee Stock Purchase Plan 2016 [Member]
Allocated Share-based Compensation Expense	$ 123	$ 180	$ 147
Building and Building Improvements [Member] \| Minimum
Property, Plant and Equipment, Useful Life	20 years
Building and Building Improvements [Member] \| Maximum
Property, Plant and Equipment, Useful Life	40 years
Machinery, furniture and equipment [Member] \| Minimum
Property, Plant and Equipment, Useful Life	1 year
Machinery, furniture and equipment [Member] \| Maximum
Property, Plant and Equipment, Useful Life	10 years