Investment in Affiliated Company (Details) (Luxcel)	12 Months Ended
Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jan. 31, 2010 USD ($)	Jan. 31, 2010 EUR (€)
Investment in Affiliated Company
Cost method investment				$ 3,600,000	€ 2,500,000
Cost ownership interest (as a percent)				16.90%	16.90%
Number of shares for which it was elected not to be exercised by January 2013	375,000
Reimbursement for certain research and development costs incurred	$ 0	$ 175,000	$ 165,000

This element represents the aggregate carrying amount of all cost-method investments held by the Company. Generally, such investments do not have readily determinable fair values and are not required to be accounted for by the equity method. The carrying amount of such securities equates to cost, adjusted for other-than-temporary impairment. The cost method and lower-of-cost or market, an adaptation of the cost method, is generally followed for most investments in noncontrolled corporations, in some corporate joint ventures, and to a lesser extent in unconsolidated subsidiaries, particularly foreign.

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+ Details