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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Schedule of Property, Plant and Equipment Balances and Corresponding Lives) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 622,005 | $ 555,292
Less: Accumulated depreciation | (284,601) | (255,180)
Property, plant and equipment, net | 337,404 | 300,112
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | 1,476 | 1,837
Buildings and building improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 16,262 | 20,472
Buildings and building improvements | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 5 years |
Buildings and building improvements | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 40 years |
Leasehold improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 114,941 | 105,063
Leasehold improvements | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 1 year |
Leasehold improvements | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 20 years |
Machinery and production equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 155,313 | 143,921
Machinery and production equipment | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 3 years |
Machinery and production equipment | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 20 years |
Surgical instrument kits |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 33,104 | 31,231
Surgical instrument kits | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 4 years |
Surgical instrument kits | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 5 years |
Information systems and hardware |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 138,398 | 129,962
Information systems and hardware | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 1 year |
Information systems and hardware | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 7 years |
Furniture, fixtures, and office equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 22,145 | 17,731
Furniture, fixtures, and office equipment | Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 1 year |
Furniture, fixtures, and office equipment | Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant and equipment, useful life | 15 years |
Construction-in-progress |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 140,366 | $ 105,075

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