| Schedule of Product Warranty Liability [Table Text Block] |
| |
|
September 30, 2015 |
|
|
December 31, 2014 |
|
| Beginning accrued warranty balance |
|
$ |
938,466 |
|
|
$ |
1,312,918 |
|
| Reduction for labor payments and claims made under the warranty |
|
|
(107,669 |
) |
|
|
(75,966 |
) |
| Adjustment to warranty liability for discontinued operations |
|
|
— |
|
|
|
(324,349 |
) |
| Accruals related to warranties issued during the period |
|
|
23,283 |
|
|
|
25,863 |
|
| Ending accrued warranty balance |
|
$ |
854,080 |
|
|
$ |
938,466 |
|
|
| |
|
Years Ended |
|
| |
|
2014 |
|
|
2013 |
|
| Beginning accrued warranty balance |
|
$ |
1,312,918 |
|
|
$ |
1,372,342 |
|
| Reduction for labor payments and claims made under the warranty |
|
|
(75,966 |
) |
|
|
(79,134 |
) |
| Accruals related to warranties issued during the period |
|
|
25,863 |
|
|
|
19,710 |
|
| Adjustment to warranty liability for discontinued operations |
|
|
(324,349 |
) |
|
|
— |
|
| Ending accrued warranty balance |
|
$ |
938,466 |
|
|
$ |
1,312,918 |
|
|
| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| |
|
Three Months Ended September 30, |
|
|
Nine Months Ended September 30, |
|
| |
|
2015 |
|
|
2014 |
|
|
2015 |
|
|
2014 |
|
| Basic: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Numerator: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net loss |
|
$ |
(720,353 |
) |
|
$ |
(570,551 |
) |
|
$ |
(2,072,548 |
) |
|
$ |
(1,271,934 |
) |
| Preferred deemed dividend and preferred stock dividend |
|
|
— |
|
|
|
(83 |
) |
|
|
— |
|
|
|
(18,927 |
) |
| Less: Net loss allocated to participating securities |
|
|
— |
|
|
|
598 |
|
|
|
6 |
|
|
|
5,973 |
|
| |
|
$ |
(720,353 |
) |
|
$ |
(570,036 |
) |
|
$ |
(2,072,554 |
) |
|
$ |
(714,959 |
) |
| Denominator: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Weighted-average shares outstanding |
|
|
416,495,549 |
|
|
|
240,593,277 |
|
|
|
383,035,331 |
|
|
|
189,005,946 |
|
| Weighted-average unvested restricted shares outstanding |
|
|
— |
|
|
|
(251,969 |
) |
|
|
(1,095 |
) |
|
|
(874,811 |
) |
| Denominator for basic net loss per share |
|
|
416,495,549 |
|
|
|
240,341,308 |
|
|
|
383,034,236 |
|
|
|
188,131,135 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Basic net loss per share attributable to common stockholders |
|
$ |
(0.00 |
) |
|
$ |
(0.00 |
) |
|
$ |
(0.01 |
) |
|
$ |
(0.01 |
) |
|
| |
|
Year Ended December 31, |
|
| |
|
2014 |
|
|
2013 |
|
| Basic: |
|
|
|
|
|
|
|
|
| Numerator: |
|
|
|
|
|
|
|
|
| Net loss |
|
$ |
(1,852,301 |
) |
|
$ |
(2,830,047 |
) |
| Preferred deemed dividend and preferred stock dividend |
|
|
(18,927 |
) |
|
|
(1,028,609 |
) |
| Less: Net loss allocated to participating securities |
|
|
6,005 |
|
|
|
12,503 |
|
| |
|
$ |
(1,865,223 |
) |
|
$ |
(3,846,153 |
) |
| Denominator: |
|
|
|
|
|
|
|
|
| Weighted-average shares outstanding |
|
|
204,471,018 |
|
|
|
69,477,915 |
|
| Weighted-average unvested restricted shares outstanding |
|
|
(656,121 |
) |
|
|
(306,958 |
) |
| Denominator for basic net loss per share |
|
|
203,814,897 |
|
|
|
69,170,957 |
|
| |
|
|
|
|
|
|
|
|
| Basic net loss per share attributable to common stockholders |
|
$ |
(0.01 |
) |
|
$ |
(0.06 |
) |
|
| Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] |
| |
|
September 30, 2015 |
|
|
December 31, 2014 |
|
| Stock options outstanding |
|
|
— |
|
|
|
37,034,483 |
|
| Unvested restricted stock |
|
|
— |
|
|
|
7,186 |
|
| Warrants to purchase common stock |
|
|
22,148,045 |
|
|
|
22,148,045 |
|
|
| |
|
December 31, 2014 |
|
|
December 31, 2013 |
|
| Stock options outstanding |
|
|
37,034,483 |
|
|
|
5,368,233 |
|
| Unvested restricted stock |
|
|
7,186 |
|
|
|
1,890,952 |
|
| Warrants to purchase common stock |
|
|
22,148,045 |
|
|
|
9,648,045 |
|
| Preferred stock convertible into common stock |
|
|
— |
|
|
|
68,353,582 |
|
|