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Discontinued Operations (Details Textual) (USD $)	1 Months Ended	12 Months Ended
Discontinued Operations (Details Textual) (USD $)	Oct. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Discontinued Operations and Disposal Groups [Abstract]
Cash received from disposal of business	$ 17,500,000
Estimated royalty to be received from disposal of business	22,500,000
Income (loss) from discontinued operations, net of tax		$ 0	$ 109,000	$ 5,181,000

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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