SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)						1 Months Ended	3 Months Ended			12 Months Ended			18 Months Ended
	Dec. 21, 2016 shares	Dec. 15, 2016 USD ($) shares	Oct. 25, 2016 $ / shares shares	Jul. 31, 2015 Segment	Jul. 02, 2015	Aug. 31, 2015	Sep. 30, 2016 USD ($)	Mar. 31, 2015 Segment	Sep. 30, 2014 USD ($)	Dec. 31, 2016 USD ($) Customer Segment $ / shares shares	Dec. 31, 2015 USD ($) Customer $ / shares shares	Dec. 31, 2014 USD ($) Customer	Dec. 31, 2016 USD ($) Segment $ / shares shares	Oct. 24, 2016 shares	Jun. 15, 2011
Summary Of Significant Accounting Policies [Line Items]
Stock split ratio, Common stock	2		2
Tax benefit										$ (15,842,000)	$ (53,820,000)	$ (9,271,000)
Restricted cash and cash equivalents										0	4,073,000		$ 0
Inventory, capitalized expenses										0	0
Depreciation expense										31,200,000	27,000,000	23,700,000
Interest expense capitalized to property, plant, and equipment										$ 1,000,000	1,700,000
Number of reportable segments | Segment				3				3		2			2
Number of reportable segments, goodwill reallocated | Segment								4
Goodwill, impairment loss											0
Impairment of indefinite-lived Assets							$ 0
Amortization expense										$ 41,500,000	32,200,000	22,700,000
Annual amortization expense expected to approximate in 2017										40,700,000			$ 40,700,000
Annual amortization expense expected to approximate in 2018										40,300,000			40,300,000
Annual amortization expense expected to approximate in 2019										40,200,000			40,200,000
Annual amortization expense expected to approximate in 2020										40,100,000			40,100,000
Annual amortization expense expected to approximate in 2021										39,100,000			39,100,000
Charitable contributions										0	900,000	600,000
Undistributed earnings of foreign subsidiaries										301,300,000			301,300,000
Amount of unrecognized deferred tax liability										$ 42,500,000			42,500,000
Number of days from shipment to issue a credit										90 days
Distribution and handling costs										$ 13,600,000	13,700,000	13,200,000
Extended warranties, in years (up to)										2 years
Accrued warranty expense										$ 800,000	$ 800,000		$ 800,000
Common stock, shares authorized (in shares) | shares			240,000,000.0							240,000,000	240,000,000		240,000,000	60,000,000.0
Common stock, par value (in dollars per share) | $ / shares			$ 0.01							$ 0.01	$ 0.01		$ 0.01
Fractional shares issued (in shares) | shares	0
Stock split, number of additional shares of common stock for each share held | shares	1
Defined benefit plan, contributions by employer											$ 1,800,000
Defined benefit plan, recognized net gain (loss) due to settlements and curtailments											(5,600,000)
Pension contributions										$ 0	2,200,000	900,000
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount										3,800,000
Increase in net cash provided by operating activities										116,405,000	104,854,000	83,565,000
Decrease in net cash used in financing activities										15,116,000	(248,142,000)	(238,682,000)
Payment of accreted interest										(42,786,000)	(384,000)	0
Interest paid										14,400,000	12,700,000	10,900,000
Interest paid, capitalized into construction in progress										1,000,000	1,700,000	2,600,000
Stock issued during period, shares, conversion of convertible securities (in shares) | shares		2,900,000
Common stock from the exercise of call option with hedge participants, value										123,100,000
Income taxes paid										4,300,000	21,300,000	6,800,000
Property and equipment purchases included in liabilities										$ 4,700,000	4,700,000	3,300,000
2016 Convertible Senior Notes
Summary Of Significant Accounting Policies [Line Items]
Interest rate on debt										1.625%			1.625%		1.625%
Accounting Standards Update 2016-09
Summary Of Significant Accounting Policies [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount										$ 1,400,000
Increase in net cash provided by operating activities										8,800,000	10,400,000	4,100,000
Decrease in net cash used in financing activities										$ 8,800,000	$ 10,400,000	$ 4,100,000
Sales Revenue, Net
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage										10.00%	10.00%	10.00%
Concentration risk, number of customers over benchmark | Customer										0	0	0
Confluent Surgical, Inc.
Summary Of Significant Accounting Policies [Line Items]
Impairment of finite-lived assets									$ 600,000	$ 600,000
Common Stock
Summary Of Significant Accounting Policies [Line Items]
Stock issued during period, shares, conversion of convertible securities (in shares) | shares		2,900,000								2,946,000
Settlement of convertible notes		$ 122,000,000								$ 29,000
In-process research and development
Summary Of Significant Accounting Policies [Line Items]
Other Indefinite-lived intangible assets										1,000,000	$ 1,000,000		$ 1,000,000
Impairment charges										$ 0	$ 400,000	$ 200,000
Trademarks Brand Names
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life										30 years	30 years
Trademarks Brand Names | Minimum
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life						20 years
Trademarks Brand Names | Maximum
Summary Of Significant Accounting Policies [Line Items]
Finite-lived intangible asset, useful life						30 years
Technology
Summary Of Significant Accounting Policies [Line Items]
Amortization expense, included in cost of product revenues										$ 27,600,000	$ 22,300,000	$ 15,900,000
Computer Equipment
Summary Of Significant Accounting Policies [Line Items]
Capital leased assets, gross										2,000,000	2,000,000		2,000,000
Capital leases, accumulated depreciation										$ 2,000,000	$ 1,300,000		$ 2,000,000
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | SeaSpine Inc.
Summary Of Significant Accounting Policies [Line Items]
Distribution of spinoff shares					100.00%
Shares of Integra for share of SeaSpine					0.3333