Convertible Senior Secured Notes (Schedule Of Principal Payments Of Secured Notes Payable) (Details) (USD $)	0 Months Ended	9 Months Ended
May 03, 2013	Sep. 30, 2013
Convertible Senior Secured Notes [Abstract]
Gross proceeds	$ 90,000,000	$ 90,000,000
Interest make-whole interest derivative		(9,270,000)
Convertible note offering conversion option		(22,336,000)
Amortization of Debt Discount (Premium)		1,781,000
Carrying value		$ 60,175,000
Debt Instrument, Interest Rate, Stated Percentage	7.50%	7.50%

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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- Definition

The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

+ References

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Increase of additional borrowings on existing and new debt instruments.

+ References

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Interest rate stated in the contractual debt agreement.

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Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs.

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