Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands		1 Months Ended
	Sep. 28, 2010	Jan. 31, 2015	Sep. 30, 2014	Dec. 31, 2019	Dec. 31, 2018
Other Commitments [Line Items]
Unreported loss liability				$ 1,900	$ 1,700
Recoverable insurance amounts				935	693
Property and equipment, net				32,150	$ 31,028
PerClot [Member]
Other Commitments [Line Items]
Prepaid royalties				1,500
Net intangible assets				2,000
Property and equipment, net				1,300
CEO [Member]
Other Commitments [Line Items]
Term of employment agreement			3 years
Maximum [Member]
Other Commitments [Line Items]
Estimated loss				3,700
Starch Technology Purchase [Member]
Other Commitments [Line Items]
Term of distribution agreement	15 years
Amount paid related to achievement of contingent milestone		$ 500
Expected future contingent payment amounts				$ 1,000