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Commitments and Contingencies Narrative (Details) $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2015 USD ($) claim	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 30, 2015 term	Dec. 22, 2015 term	Oct. 02, 2015 term	Aug. 18, 2015 claim	Jul. 10, 2015 claim	Jun. 29, 2015 claim
Loss Contingencies [Line Items]
Lessee expiration period (years)		5 years
Rent and operating leases expense | $		$ 1,317	$ 1,130	$ 1,000
Period for plaintiff to proceed with case (days)	120 days
Product Concentration Risk | Sales Revenue, Net
Loss Contingencies [Line Items]
Percentage of revenue (percent)		12.00%
Letters of Credit
Loss Contingencies [Line Items]
Standby letters of credit | $		$ 235
Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims		3
Liventa Action [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of dispute claim terms at issue | term					1	30
Liventa Action, 701 Patent [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims								6
Liventa Action, 437 Patent [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims								7
Opinion allowing a review of patent, number								1
Bone Bank Action [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims									5	7
Number of dispute claim terms at issue | term							1
Opinion allowing a review of patent, number									2

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

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Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of pending claims pertaining to a loss contingency.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349

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