XML 30 R18.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Subsequent Events | 3 Months Ended
--- | ---
Mar. 31, 2018
Subsequent Events [Abstract] |
Subsequent Events | 12. Subsequent events On April 30, 2018, the Company completed the acquisition of Spinal Kinetics Inc. (“Spinal Kinetics”), a privately held developer and manufacturer of artificial cervical and lumbar discs. Terms of the transaction included $45 million in cash plus up to an additional $60 million in future contingent milestone payments related to U.S. Food and Drug Administration approval of the M6-C® cervical disc and the achievement of certain future sales targets. These contingent milestones payments must be achieved within five years of closing.

X
- References No definition available. + Details
Name: | us-gaap_SubsequentEventsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 + Details
Name: | us-gaap_SubsequentEventsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration