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Goodwill and Other Intangible Assets Changes in Goodwill Carrying Amount (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Oct. 17, 2011	Jan. 19, 2011	Dec. 31, 2009
Goodwill [Line Items]
Acquisition	$ 11,117,770
Balance as of December 31, 2010	11,117,770	0	4,104,500	7,013,500	558,168
Goodwill, Impairment Loss	0	558,168
PCT Acquisition [Member]
Goodwill [Line Items]
Acquisition	7,000,000
Amorcyte Acquisition [Member]
Goodwill [Line Items]
Acquisition	$ 4,100,000

X

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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