SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property, Plant and Equipment Balances and Corresponding Lives) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total	$ 570,378	$ 622,005
Less: Accumulated depreciation	(282,849)	(284,601)
Property, plant and equipment, net	287,529	337,404
Land
Property, Plant and Equipment [Line Items]
Total	1,541	1,476
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Total	$ 17,345	16,262
Buildings and building improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Buildings and building improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	40 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	$ 144,852	114,941
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	1 year
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	20 years
Machinery and production equipment
Property, Plant and Equipment [Line Items]
Total	$ 166,973	155,313
Machinery and production equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Machinery and production equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	20 years
Surgical instrument kits
Property, Plant and Equipment [Line Items]
Total	$ 1,164	33,104
Surgical instrument kits | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	4 years
Surgical instrument kits | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Information systems and hardware
Property, Plant and Equipment [Line Items]
Total	$ 143,770	138,398
Information systems and hardware | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	1 year
Information systems and hardware | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Furniture, fixtures, and office equipment
Property, Plant and Equipment [Line Items]
Total	$ 20,843	22,145
Furniture, fixtures, and office equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	1 year
Furniture, fixtures, and office equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Construction-in-progress
Property, Plant and Equipment [Line Items]
Total	$ 73,890	$ 140,366