SEGMENT AND GEOGRAPHIC INFORMATION (Revenue by Major Product Category) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue from External Customer [Line Items]
Total Revenues	$ 205,547	$ 196,652	$ 210,170	$ 196,185	$ 402,199	$ 406,355
Orthopedics
Revenue from External Customer [Line Items]
Total Revenues	91,434		95,695		181,694	181,847
Neurosurgery
Revenue from External Customer [Line Items]
Total Revenues	68,459		67,775		131,644	133,832
Instruments
Revenue from External Customer [Line Items]
Total Revenues	$ 45,654		$ 46,700		$ 88,861	$ 90,676