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Significant Accounting Policies - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 108,537,000 | $ 98,497,000 | $ 104,075,000 | $ 98,679,000 | $ 104,622,000 | $ 101,151,000 | $ 100,954,000 | $ 89,762,000 | $ 409,788,000 | $ 396,489,000 | $ 402,277,000
Cumulative-effect adjustment to retained earnings |  |  |  |  |  |  |  |  | 604,000 |  |
Decrease in net cash provided by financing activities |  |  |  |  |  |  |  |  | 46,112,000 | (24,728,000) | 20,200,000
Increase in net cash from operating activities |  |  |  |  |  |  |  |  | 44,707,000 | 43,610,000 | 51,164,000
ASU 2016-09 [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cumulative-effect adjustment to retained earnings |  |  |  |  |  |  |  |  | 1,400,000 |  |
Cumulative-effect adjustment to net assets | $ 600,000 |  |  |  |  |  |  |  | 600,000 |  |
Decrease in net cash provided by financing activities |  |  |  |  |  |  |  |  |  | 400,000 | 200,000
Increase in net cash from operating activities |  |  |  |  |  |  |  |  |  | 400,000 | 200,000
Musculoskeletal Transplant Foundation ("MTF") [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Expenditures for other research and development |  |  |  |  |  |  |  |  | 1,300,000 | 0 | 300,000
Customers and Distributors Based in Europe [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 60,000,000 |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transactional foreign currency gains and (losses), including those generated from intercompany operations |  |  |  |  |  |  |  |  | $ (100,000) | $ (3,500,000) | $ (2,400,000)

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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585 + Details
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