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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, 2017 | Dec. 31, 2016
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 489,185 | $ 413,208
Less: Accumulated depreciation | (219,934) | (190,839)
Property, plant and equipment, net | 269,251 | 222,369
Land |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | 1,881 | 2,147
Buildings and building improvements |  |
Property, Plant and Equipment [Line Items] |  |
Property, plant, and equipment, gross | $ 20,243 | 17,677
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 | $ 90,329 | 82,432
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 | $ 137,914 | 103,818
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 | $ 30,511 | 19,871
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 | $ 127,946 | 111,145
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 | $ 17,394 | 16,896
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 | $ 62,967 | $ 59,222

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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