GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) (USD $)	6 Months Ended			3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014 Confluent Surgical, Inc.	Jun. 30, 2014 U.S. Spine And Other
Goodwill [Line Items]
Goodwill impairment loss					$ 46,700,000
Impairment of intangible assets	600,000	0	[1]	600,000
Annual amortization expense expected to approximate in 2014	31,100,000
Annual amortization expense expected to approximate in 2015	28,800,000
Annual amortization expense expected to approximate in 2016	26,600,000
Annual amortization expense expected to approximate in 2017	24,500,000
Annual amortization expense expected to approximate in 2018	$ 24,100,000

[1] See Note 1 of these condensed consolidated financial statements for discussion of the impact of the change in accounting for the medical device excise tax.