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Organization (Details) (USD $)
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0 Months Ended | 6 Months Ended | 0 Months Ended | 0 Months Ended | 6 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Jul. 03, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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May 15, 2012
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Apr. 04, 2014
Shelf Registration [Member]
Common Stock [Member]
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Jul. 03, 2013
Shelf Registration [Member]
Common Stock [Member]
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Apr. 04, 2014
Shelf Registration [Member]
Subsequent Event [Member]
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Apr. 04, 2014
Shelf Registration [Member]
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Jul. 03, 2013
Shelf Registration [Member]
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Jun. 30, 2014
Shelf Registration [Member]
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Jul. 03, 2013
Common Stock [Member]
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Jun. 30, 2014
Line Of Credit With FGI [Member]
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Jun. 30, 2014
8% Subordinated Convertible Shareholder Notes Due 2016 [Member]
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May 06, 2011
8% Subordinated Convertible Shareholder Notes Due 2016 [Member]
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Apr. 11, 2011
8% Subordinated Convertible Shareholder Notes Due 2016 [Member]
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| Organization (Details) [Line Items] | |||||||||||||||||
| Retained Earnings (Accumulated Deficit) | $ (186,744,000) | $ (181,719,000) | |||||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 7,500,000 | ||||||||||||||||
| Line of Credit Facility, Amount Outstanding | 3,400,000 | ||||||||||||||||
| Line of Credit Facility, Current Borrowing Capacity | 4,100,000 | ||||||||||||||||
| Shelf Registration Authorized Amount | 50,000,000 | ||||||||||||||||
| Shelf Registartion Public Float Threshold | 75,000,000 | ||||||||||||||||
| Shelf Registration Units Sold | 1,730,000 | 2,030,000 | |||||||||||||||
| Shelf Registration Unit Price | 1.25 | 3.40 | |||||||||||||||
| Shelf Registration Units Sold Share Component Per Unit | 1 | 1 | |||||||||||||||
| Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | 1 | 1 | 1.25 | ||||||||||||||
| Proceeds From Issuance Of Common Stock And Warrants | 6,100,000 | 1,700,000 | |||||||||||||||
| Warrants Exercised During the Period | 800,000 | ||||||||||||||||
| Class of Warrant or Right, Exercise Price of Warrants or Rights | $ 4.20 | $ 1.25 | |||||||||||||||
| Proceeds from Warrant Exercises | 1,000,000 | 1,000,000 | |||||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 8.00% | 8.00% | ||||||||||||||
| Cash | $ 8,558,000 | $ 3,164,000 | $ 3,909,000 | $ 6,878,000 | |||||||||||||