Commitments And Contingencies (Details) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Jan. 31, 2015	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Commitments And Contingencies [Line Items]
Unreported loss liability			$ 1,400,000	$ 1,400,000
Recoverable insurance amounts			628,000	600,000
Liability estimated after a reasonable margin for statistical fluctuations			3,100,000
PerClot [Member]
Commitments And Contingencies [Line Items]
Prepaid royalties			1,500,000
Intangible assets, net			3,100,000
Former CEO [Member]
Commitments And Contingencies [Line Items]
Incremental expense related to agreement		$ 1,400,000	$ 93,000	$ 195,000
Starch Technology Purchase [Member]
Commitments And Contingencies [Line Items]
Term of distribution agreement			15 years
Number of notice days			180 days
Expected future contingent payment amounts to be initially recorded as research and development expense			$ 1,000,000
Starch Technology Purchase [Member] | Supplemental Employee Retirement Plan, Defined Benefit [Member]
Commitments And Contingencies [Line Items]
Amount paid related to achievement of contingent milestone	$ 500,000