Contractual Commitments and Contingencies (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016 USD ($) claim	Mar. 31, 2015 USD ($)	Dec. 31, 2015	Dec. 30, 2015 term	Dec. 22, 2015 term	Oct. 02, 2015 term	Aug. 18, 2015 claim	Jul. 10, 2015 claim	Jun. 29, 2015 claim
Estimated annual lease, royalty, and employment agreement expenses [Abstract]
2017	$ 2,998
2018	2,246
2019	2,199
2020	1,742
Thereafter	765
Total Contractual commitments	$ 9,950
Loss Contingencies [Line Items]
Lessee expiration period (years)	6 years
Rent expense	$ 423	$ 284
Sales Revenue, Net | Product Concentration Risk
Loss Contingencies [Line Items]
Percentage of revenue			12.00%
Standby Letters of Credit
Loss Contingencies [Line Items]
Standby letters of credit	$ 235
Pending Litigation
Loss Contingencies [Line Items]
Number of patent challenged grounds | claim	4
Pending Litigation | Bone Bank Action
Loss Contingencies [Line Items]
Number of patent challenged grounds | claim								5	7
Number of pending disputed claim terms | term						1
Opinion allowing a review of patent | claim								2
Pending Litigation | Liventa Action
Loss Contingencies [Line Items]
Number of pending disputed claim terms | term				1	30
Pending Litigation | Liventa Action, 701 Patent
Loss Contingencies [Line Items]
Number of patent challenged grounds | claim							6
Pending Litigation | Liventa Action, 437 Patent
Loss Contingencies [Line Items]
Number of patent challenged grounds | claim							7
Opinion allowing a review of patent | claim							1