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Equity Transactions (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended	3 Months Ended
	Oct. 23, 2012	Mar. 31, 2013
Equity Transactions [Abstract]
Stock issued, underwritten public offering, value	$ 23.0
Stock issued, underwritten public offering, value (in shares)	9.2
Net proceeds from issuance of common stock	$ 21.5
Reverse stock split conversation ratio		1-for-7

- Definition

The cash inflow from the additional capital contribution to the entity.

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- Definition

Number of new stock issued during the period.

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- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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