|
Condensed Consolidated Statement of Stockholders' Equity (USD $)
In Thousands, except Share data, unless otherwise specified
|
Total
|
Common Stock [Member]
|
Additional Paid-in Capital [Member]
|
Retained Earnings (Deficit) [Member]
|
| Balance at Apr. 30, 2011 |
$ 294,742 |
$ 4 |
$ 49,013 |
$ 245,725 |
| Balance (in shares) at Apr. 30, 2011 |
|
39,880,251 |
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Net loss |
(4,667) |
|
|
(4,667) |
| Issuance of equity for services |
563 |
0 |
563 |
|
| Issuance of equity for services (in shares) |
62,500 |
100,000 |
|
|
| Issuance of equity for compensation |
6,255 |
0 |
6,255 |
|
| Issuance of equity for compensation (in shares) |
|
62,500 |
|
|
| Exercise of equity rights |
1,283 |
0 |
1,283 |
|
| Exercise of equity rights (in shares) |
869,000 |
869,000 |
|
|
| Balance at Oct. 31, 2011 |
298,176 |
4 |
57,114 |
241,058 |
| Balance (in shares) at Oct. 31, 2011 |
40,911,751 |
40,911,751 |
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Net loss |
(14,023) |
|
|
(14,023) |
| Issuance of equity for services |
938 |
0 |
938 |
|
| Issuance of equity for services (in shares) |
|
30,000 |
|
|
| Issuance of equity for compensation |
6,661 |
0 |
6,661 |
|
| Issuance of equity for compensation (in shares) |
|
45,000 |
|
|
| Exercise of equity rights |
100 |
0 |
100 |
|
| Exercise of equity rights (in shares) |
|
100,000 |
|
|
| Accretion of preferred stock |
(847) |
|
|
(847) |
| Balance at Apr. 30, 2012 |
291,005 |
4 |
64,813 |
226,188 |
| Balance (in shares) at Apr. 30, 2012 |
41,086,751 |
41,086,751 |
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Net loss |
(3,619) |
|
|
(3,619) |
| Issuance of equity for services |
1,944 |
0 |
1,944 |
|
| Issuance of equity for services (in shares) |
483,642 |
351,477 |
|
|
| Issuance of equity for compensation |
6,160 |
0 |
6,160 |
|
| Issuance of equity for compensation (in shares) |
|
444,665 |
|
|
| Exercise of equity rights |
3,833 |
0 |
3,833 |
|
| Exercise of equity rights (in shares) |
1,286,001 |
1,286,001 |
|
|
| Accretion of preferred stock |
(2,460) |
|
|
(2,460) |
| Other equity issuances |
1,341 |
0 |
1,341 |
|
| Other equity issuances (in shares) |
|
192,800 |
|
|
| Preferred stock redemption |
2,510 |
|
2,510 |
|
| Modification of warrants |
1,840 |
0 |
1,840 |
0 |
| Balance at Oct. 31, 2012 |
$ 302,554 |
$ 4 |
$ 82,441 |
$ 220,109 |
| Balance (in shares) at Oct. 31, 2012 |
43,361,694 |
43,361,694 |
|
|