Convertible Debt and Convertible Preferred Stock - Information of convertible preferred stock (Details 3) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Statement of Changes in Shareholders' Equity |
|
|
| Fair value of preferred stock liabilty converted to common stock |
$ 21,604
|
|
| Issuance of warrants for convertible notes offering |
3,552
|
|
| Cash received from convertible preferred stock and warrants: |
|
|
| Net proceeds received from preferred stock offering |
2,346
|
$ (1,353)
|
| Convertible Preferred Stock |
|
|
| Statement of Changes in Shareholders' Equity |
|
|
| Fair value of preferred stock liabilty converted to common stock |
4,324
|
|
| Issuance of warrants for convertible notes offering |
1,053
|
|
| Proceed from warrant exercise |
1,570
|
|
| Statement of Operations: |
|
|
| Amortization of debt discount and interest expense |
(304)
|
|
| Loss on debt extinguishment |
(2,831)
|
|
| Increase in shareholders' equity |
3,812
|
|
| Cash received from convertible preferred stock and warrants: |
|
|
| Preferred stock, net of costs |
2,242
|
|
| Warrants, net of costs |
1,570
|
|
| Net proceeds received from preferred stock offering |
$ 3,812
|
|