Business Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Sep. 23, 2011 Ascension Orthopedics, Inc.	Jun. 30, 2012 SeaSpine, Inc.	May 23, 2011 SeaSpine, Inc.
Business Acquisition [Line Items]
Company acquired in cash	$ 66.5		$ 89.0
Business acquisition amount paid for working capital adjustment	0.2
Business acquisition, working capital adjustment			0.3
Business acquisition, indemnification holdback		$ 5.0	$ 7.4

Amount of cash paid to acquire the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141R

-Paragraph 68

-Subparagraph f(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 141

-Paragraph 51

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant