Subsequent Events (Narrative) (Details) $ in Thousands, € in Millions				12 Months Ended
	Feb. 03, 2016 USD ($)	Jan. 20, 2016 USD ($) shares	Dec. 22, 2015 USD ($)	Dec. 31, 2015 EUR (€)	Dec. 31, 2015 USD ($)	Dec. 31, 2014	Dec. 31, 2013
Subsequent Event [Line Items]
Cash paid for acquisition				€ 1.2	$ 1,349
Business combination, integration costs					2,800
HeRO Graft Product Line [Member]
Subsequent Event [Line Items]
Divested product line, carrying value of assets before allocation of goodwill					$ 8,000
HeRO Graft Product Line [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from divestiture of business	$ 18,500
Maximum duration of manufacting responsiblity per transition supply agreement	6 months
On-X Life Technologies Holdings, Inc. [Member]
Subsequent Event [Line Items]
Date business combination finalized				Jan. 20, 2016	Jan. 20, 2016
Pro forma, tax rate used for calculation				38.00%	38.00%	38.00%	38.00%
On-X Life Technologies Holdings, Inc. [Member] | Scenario, Plan [Member]
Subsequent Event [Line Items]
Consideration transferred			$ 130,000
Cash paid for acquisition			91,000
Common stock value issued in business combination			$ 39,000
On-X Life Technologies Holdings, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Consideration transferred		$ 128,000
Cash paid for acquisition		93,400
Common stock value issued in business combination		$ 34,600
Common stock issued for business combination | shares		3,703,699