Summary of Significant Accounting Policies - Additional Information (Detail) € in Millions	3 Months Ended									12 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Sep. 30, 2013 USD ($)	Dec. 31, 2015 USD ($) Segment	Dec. 31, 2015 EUR (€) Segment	Dec. 31, 2014 USD ($)	Dec. 31, 2014 EUR (€)	Dec. 31, 2013 USD ($)	Dec. 31, 2013 EUR (€)	Dec. 31, 2009
Summary Of Significant Accounting Policies [Line Items]
Deferred income taxes	$ 57,306,000				$ 55,725,000					$ 57,306,000		$ 55,725,000
Transactional foreign currency gains and (losses), including those generated from intercompany operations										$ (3,500,000)		(2,400,000)		$ (500,000)
Number Of Reporting Units | Segment										4	4
Number of reporting units with estimated fair value less than carrying value | Segment										2	2
Impairment of goodwill									$ 19,200,000					19,193,000
Marketing fee										$ 55,405,000		50,752,000		48,059,000
Sale of receivables										11,900,000	€ 10.9	12,800,000	€ 9.8	16,000,000	€ 12.0
Estimated related fee										500,000		400,000		800,000
Shipping and handling costs										2,200,000		2,300,000		2,800,000
Net sales	104,622,000	$ 101,151,000	$ 100,954,000	$ 89,762,000	100,284,000	$ 100,994,000	$ 100,985,000	$ 100,014,000		396,489,000		402,277,000		397,611,000
Customers and Distributors Based in Europe [Member]
Summary Of Significant Accounting Policies [Line Items]
Net sales										53,000,000
Musculoskeletal Transplant Foundation ("MTF") [Member]
Summary Of Significant Accounting Policies [Line Items]
Expenditures for other research and development										$ 0		300,000		2,500,000
Collaborative Arrangement [Member] | Musculoskeletal Transplant Foundation ("MTF") [Member]
Summary Of Significant Accounting Policies [Line Items]
Period of agreement with MTF																10 years
Extended Period of existing agreement with MTF										15 years	15 years
Marketing fee										$ 55,400,000		50,800,000		48,100,000
Spine Fixation [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill									9,800,000
Net sales										75,668,000		82,042,000		95,421,000
Extremity Fixation [Member]
Summary Of Significant Accounting Policies [Line Items]
Impairment of goodwill									$ 9,400,000
Net sales										$ 96,034,000		109,678,000		$ 103,359,000
Developed Technology [Member]
Summary Of Significant Accounting Policies [Line Items]
Weighted average amortization period ( in years)										11 years	11 years
Adjustments for New Accounting Pronouncement [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred tax assets, current					$ 37,400,000							$ 37,400,000
Deferred income taxes	$ 37,400,000									$ 37,400,000