Business Combinations (Details 2) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Total current assets	$ 711,974	$ 702,827
Goodwill	405,569	154,281	$ 154,305	$ 154,273
Non-controlling interests	6,429	7,309
Variable Interest Entity [Member]
Business Acquisition [Line Items]
Non-controlling interests	6,429	7,309	$ 7,919	$ 8,310
Variable Interest Entity [Member] | Progentix Orthobiology [Member]
Business Acquisition [Line Items]
Total current assets	510	353
Identifiable intangible assets, net	11,974	13,048
Goodwill	12,654	12,654
Accounts payable and accrued expenses	830	574
Deferred tax liabilities, net	1,160	1,496
Non-controlling interests	$ 6,429	$ 7,309