Hemosphere Acquisition (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	May 16, 2012 Hemosphere [Member]
Class of Stock [Line Items]
Fair value of contingent consideration				$ 1,800,000
Maximum amount of future consideration payment				4,500,000
Gain (loss) on revaluation of contingent consideration	98,000	(39,000)
Contingent consideration liability	$ 1,786,000		$ 1,884,000