PROPERTY AND EQUIPMENT (Schedule of Property and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and equipment	$ 526,651	$ 493,330
Less: accumulated depreciation	(305,575)	(276,451)
Total	221,076	216,879
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	8,296	8,322
Building and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 44,672	33,825
Useful Life	31 years 6 months
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 113,301	102,553
Instruments [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 285,762	278,930
Useful Life	5 years
Modules and cases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 44,185	41,919
Useful Life	5 years
Other Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	$ 30,435	$ 27,781
Maximum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	15 years
Maximum [Member] | Other Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Minimum [Member] | Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	5 years
Minimum [Member] | Other Property and Equipment [Member]
Property, Plant and Equipment [Line Items]
Useful Life	3 years