PerClot Technology Acquisition (Details) (USD $)	3 Months Ended		9 Months Ended			12 Months Ended			0 Months Ended		3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 28, 2010	Dec. 31, 2011 PerClot Technology Acquisition [Member]	Sep. 28, 2010 PerClot Technology Acquisition [Member] Trademarks [Member]	Sep. 28, 2010 PerClot Technology Acquisition [Member] Distribution And Manufacturing Right In Certain International Countries [Member]	Sep. 28, 2010 Starch Technology Purchase [Member]	Sep. 28, 2010 Starch Technology Purchase [Member]	Sep. 30, 2010 Starch Technology Purchase [Member]
Business Acquisition [Line Items]
Term of distribution agreement										15 years
Option to purchase certain remaining related technology										3 years
Cash paid for acquisition									$ 6,750,000	$ 6,750,000
Number of shares issued as consideration for PerClot technology acquisition									209,000
Initial aggregate consideration					8,000,000
Approximate value of restricted common stock issued for acquisition									1,000,000	1,000,000
Non-current assets for prepaid royalties					1,500,000
Deferred tax asset					145,000
Amortizable intangible assets					2,600,000		327,000	2,600,000
In-process research and development											3,500,000
Intangible asset useful life			14 years						15 years
Research and development	1,829,000	1,690,000	5,192,000	5,099,000		250,000
Expected future contingent payment amounts to be initially recorded as research and development expense			$ 2,500,000