Business Segment, Product, and Geographic Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Revenue from External Customers by Products and Services

Revenue by product line offerings was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2014		2013		2014		2013
Spine Surgery Products	$	146,739	$	131,137	$	431,379	$	382,485
Biologics	32,632		28,743		94,958		83,754
Monitoring Service	10,547		9,276		31,753		28,119
Total Revenue	$	189,918	$	169,156	$	558,090	$	494,358

Schedule of Revenue and Net Property and Equipment by Geographical Areas [Table Text Block]

Revenue and property and equipment, net, by geographic area were as follows:

	Revenue								Property and Equipment, Net
	Three Months Ended September 30,				Nine Months Ended September 30,				September 30,		December 31,
(in thousands)	2014		2013		2014		2013		2014		2013
United States	$	164,805	$	152,377	$	490,274	$	450,024	$	105,758	$	109,458
International (excludes Puerto Rico)	25,113		16,779		67,816		44,334		25,459		18,606
Total	$	189,918	$	169,156	$	558,090	$	494,358	$	131,217	$	128,064