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Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information (USD $)
In Thousands, except Per Share data, unless otherwise specified
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12 Months Ended |
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items] |
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|
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| Revenues |
$ 301 |
$ 362 |
$ 1,019 |
| Operating loss |
(13,972) |
(13,068) |
(11,234) |
| Net loss applicable to common stock |
(22,677) |
(19,574) |
(16,837) |
| Basic and diluted net loss per common share (in Dollars per share) |
$ (1.46) |
$ (1.27) |
$ (1.20) |
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Quarter Ended March 31 [Member]
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| Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items] |
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| Revenues |
4 |
31 |
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| Gross profit |
4 |
31 |
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| Operating loss |
(3,944) |
(2,885) |
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| Net loss applicable to common stock |
(7,439) |
(4,448) |
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| Basic and diluted net loss per common share (in Dollars per share) |
$ (0.48) |
$ (0.29) |
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Quarter Ended June 30 [Member]
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| Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items] |
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| Revenues |
4 |
6 |
|
| Gross profit |
4 |
4 |
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| Operating loss |
(2,871) |
(2,986) |
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| Net loss applicable to common stock |
(4,461) |
(4,584) |
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| Basic and diluted net loss per common share (in Dollars per share) |
$ (0.29) |
$ (0.30) |
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Quarter Ended September 30 [Member]
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| Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items] |
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|
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| Revenues |
182 |
287 |
|
| Gross profit |
(110) |
(6) |
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| Operating loss |
(3,107) |
(3,068) |
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| Net loss applicable to common stock |
(4,797) |
(4,736) |
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| Basic and diluted net loss per common share (in Dollars per share) |
$ (0.31) |
$ (0.31) |
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Quarter Ended December 31 [Member]
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| Note 13 - Quarterly Financial Information (Unaudited) (Details) - Quarterly Financial Information [Line Items] |
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| Revenues |
111 |
381 |
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| Gross profit |
(152) |
(188) |
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| Operating loss |
(4,050) |
(4,129) |
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| Net loss applicable to common stock |
$ (5,980) |
$ (5,806) |
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| Basic and diluted net loss per common share (in Dollars per share) |
$ (0.38) |
$ (0.38) |
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