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Beneficial Conversion Charge ("BCC") (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Beneficial Conversion Charge [Abstract]
Non-cash BCC recoreded	$ 0	$ 9,175	$ 0
Discount on fair value of common stock (in dollars per share)		$ 1.00

Amount of a favorable spread to a debt holder between the amount of debt being converted and the value of the securities received upon conversion. This is an embedded conversion feature of convertible debt issued that is in-the-money at the commitment date.

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