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Stockholders' Equity, Series C 6% Super Dividend Redeemable Convertible Preferred Stock (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Jul. 31, 2011 | Dec. 30, 2010 | Dec. 29, 2010 | Jan. 31, 2011 | Dec. 31, 2024 | Dec. 31, 2023
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Common stock shares outstanding (in shares) |  |  |  |  |  |  | 63,157,235 | 61,852,914
Minimum closing price of common stock (in dollars per share) |  |  |  |  |  |  | $ 1.29 |
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Preferred stock issued (in shares) |  |  |  | 212 |  | 13 |  |
Preferred stock par value (in dollars per share) |  |  |  |  | $ 0.01 |  |  |
Shares issued, price (in dollars per share) |  |  |  | $ 10,000 |  | $ 10,000 |  |
Stated value of dividend payment (in dollars per share) |  |  |  | $ 10,000 |  |  |  |
Gross proceeds from issuance of preferred stock |  |  |  | $ 2,120,000 |  | $ 130,000 |  |
Transaction costs |  |  |  | 47,000 |  |  |  |
Net proceeds from issuance of preferred stock |  |  |  | $ 2,073,000 |  |  |  |
Warrants issued (in shares) |  |  |  | 500 |  |  |  |
Exercise price of warrant (in dollars per share) |  |  |  | $ 7.2 |  |  |  |
Common stock share conversion price (in dollars per share) |  |  |  | $ 6 |  |  |  |
Common stock shares issued (in shares) |  |  |  | 1,667 |  |  |  |
Preferred stock shares upon conversion (in shares) | 33,756 | 40,193 | 8,334 |  |  |  | 293,340 | 293,340
Number of consecutive trading days |  |  |  | 15 days |  |  | 10 days |
Preferred stock, dividend rate |  |  |  | 6.00% |  |  |  |
Preferred stock redemption price (in dollars per share) |  |  |  | $ 3 |  |  | $ 3 |
Post conversion dividend rights (in shares) | 20 | 24 | 5 |  |  |  |  |
Post conversion redemption right, return on investment multiplier amount |  |  |  |  |  |  | $ 10,000 |
Closing days after conversion rights |  |  |  |  |  |  | 30 days |
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Preferred stock issued (in shares) |  |  |  |  | 1,000 |  |  |
Stated value of dividend payment (in dollars per share) |  |  |  |  | $ 10,000 |  |  |
Convertible preferred stock dividend |  |  |  | $ 100,000 |  |  |  |
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Common Stock [Member] |  |  |  |  |  |  |  |
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Common stock shares outstanding (in shares) |  |  |  |  |  |  | 176 | 176
Minimum closing price of common stock (in dollars per share) |  |  |  | $ 18 |  |  |  |
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Dividend Payment Scenario One [Member] |  |  |  |  |  |  |  |
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Dividend as percentage of net sales |  |  |  | 2.50% |  |  |  |
Series C 6% Super Dividend Redeemable Convertible Preferred Stock [Member] | Dividend Payment Scenario Two [Member] |  |  |  |  |  |  |  |
Redeemable Convertible Preferred Stock [Abstract] |  |  |  |  |  |  |  |
Dividend as percentage of net sales |  |  |  | 1.25% |  |  |  |

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