Subsequent Events	12 Months Ended
Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	22. Subsequent events On February 3, 2020, the Company, through a wholly owned subsidiary, entered into an Asset Purchase Agreement (the “Purchase Agreement”) with Wittenstein SE (“Wittenstein”), a privately-held German-based company, to acquire assets associated with the FITBONE intramedullary lengthening system for limb lengthening of the femur and tibia bones. Under the terms of the Purchase Agreement, as consideration for the acquired assets, the Company will pay $18 million in cash consideration and will enter into manufacturing supply contract with Wittenstein. The acquisition is anticipated to close by the end of the first quarter of 2020, subject to customary closing conditions.

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

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