Hemosphere Acquisition (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	May 16, 2012
Hemosphere Acquisition [Abstract]
Fair value of contingent consideration						$ 1,800,000
Maximum amount of future consideration payment						4,500,000
Gain (loss) on revaluation of contingent consideration	198,000	(39,000)	296,000	(78,000)
Contingent consideration liability	$ 1,588,000		$ 1,588,000		$ 1,884,000