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SEGMENT AND GEOGRAPHIC INFORMATION (Reconciliation of Segment Information) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]      
Operating income as reported $ 121,327 $ 135,711 $ 120,612
Unallocated expenses, net (45,369) (34,648) (34,405)
Income from continuing operations before income taxes 75,958 101,063 86,207
Depreciation and amortization 91,991 81,369 79,324
Identifiable assets 2,794,386 2,582,215  
Expenditures for tangible long-lived assets 74,728 53,463 46,832
Operating Segments      
Segment Reporting Information [Line Items]      
Operating income as reported 213,448 221,622 174,244
Depreciation and amortization 87,921 76,533 73,334
Identifiable assets 2,709,742 2,504,281  
Expenditures for tangible long-lived assets 70,047 48,992 43,473
Operating Segments | Medical      
Segment Reporting Information [Line Items]      
Operating income as reported 205,877 213,600 169,396
Depreciation and amortization 86,825 75,366 72,338
Identifiable assets 2,652,357 2,448,123  
Expenditures for tangible long-lived assets 69,687 48,364 42,435
Operating Segments | Non-Medical      
Segment Reporting Information [Line Items]      
Operating income as reported 7,571 8,022 4,848
Depreciation and amortization 1,096 1,167 996
Identifiable assets 57,385 56,158  
Expenditures for tangible long-lived assets 360 628 1,038
Unallocated operating expenses      
Segment Reporting Information [Line Items]      
Operating income as reported (92,121) (85,911) (53,632)
Depreciation and amortization 4,070 4,836 5,990
Identifiable assets 84,644 77,934  
Expenditures for tangible long-lived assets $ 4,681 $ 4,471 $ 3,359