Assumptions used and related fair values for warrants |
Significant
assumptions used and related fair values for the warrants as of March 31, 2013 were as follows:
Original Issuance |
|
Exercise Price |
|
|
Volatility |
|
|
Risk-Free Interest
Rate |
|
|
Term (years) |
|
|
Discount for Marketability
restrictions |
|
|
Warrants Outstanding |
|
|
Fair Value |
|
03/28/2013 |
|
$ |
7.80 |
|
|
|
71.1% |
|
|
|
0.24% |
|
|
|
2.00 |
|
|
|
38.2% |
|
|
|
788,000 |
|
|
$ |
882,000 |
|
01/11/2013 |
|
$ |
7.80 |
|
|
|
72.5% |
|
|
|
0.77% |
|
|
|
4.79 |
|
|
|
54.4% |
|
|
|
1,709,000 |
|
|
|
2,728,000 |
|
09/26/2012 |
|
$ |
8.85 |
|
|
|
84.2% |
|
|
|
0.31% |
|
|
|
2.49 |
|
|
|
75.9% |
|
|
|
1,771,000 |
|
|
|
776,000 |
|
07/3/2012 |
|
$ |
7.50 |
|
|
|
71.1% |
|
|
|
0.57% |
|
|
|
4.26 |
|
|
|
51.8% |
|
|
|
1,812,000 |
|
|
|
2,880,000 |
|
07/3/2012 |
|
$ |
6.45 |
|
|
|
63.7% |
|
|
|
0.14% |
|
|
|
0.76 |
|
|
|
57.6% |
|
|
|
804,000 |
|
|
|
335,000 |
|
12/13/2011 |
|
$ |
11.25 |
|
|
|
68.1% |
|
|
|
0.57% |
|
|
|
3.71 |
|
|
|
47.1% |
|
|
|
306,000 |
|
|
|
478,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
8,079,000 |
|
Significant
assumptions used and related fair values for the warrants as of December 31, 2012 were as follows:
Original Issuance |
|
Exercise Price |
|
|
Volatility |
|
|
Risk-Free Interest
Rate |
|
|
Term (years) |
|
|
Discount for Marketability
restrictions |
|
|
Warrants Outstanding |
|
|
Fair Value |
|
09/26/2012 |
|
$ |
8.85 |
|
|
|
70.2% |
|
|
|
0.36% |
|
|
|
2.74 |
|
|
|
53.9% |
|
|
|
1,833,000 |
|
|
$ |
1,112,000 |
|
07/3/2012 |
|
$ |
7.50 |
|
|
|
76.1% |
|
|
|
0.72% |
|
|
|
4.51 |
|
|
|
55.5% |
|
|
|
1,867,000 |
|
|
|
2,756,000 |
|
07/3/2012 |
|
$ |
6.45 |
|
|
|
69.3% |
|
|
|
0.16% |
|
|
|
1.01 |
|
|
|
55.5% |
|
|
|
930,000 |
|
|
|
509,000 |
|
12/13/2011 |
|
$ |
12.45 |
|
|
|
74.4% |
|
|
|
0.54% |
|
|
|
3.95 |
|
|
|
52.3% |
|
|
|
330,000 |
|
|
|
480,000 |
|
10/6/2010 |
|
$ |
1.80 |
|
|
|
76.0% |
|
|
|
0.72% |
|
|
|
4.80 |
|
|
|
46.4% |
|
|
|
17,000 |
|
|
|
35,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
4,892,000 |
|
|
Original Issuance |
|
Exercise Price |
|
|
Volatility |
|
|
Risk Free Interest Rate |
|
|
Term (years) |
|
|
Market Discount |
|
|
Warrants Outstanding |
|
|
Fair Value |
|
09/26/2012 |
|
$ |
8.85 |
|
|
|
70.2% |
|
|
|
0.36% |
|
|
|
2.74 |
|
|
|
53.9% |
|
|
|
1,833,000 |
|
|
$ |
1,112,000 |
|
07/3/2012 |
|
$ |
7.50 |
|
|
|
76.1% |
|
|
|
0.72% |
|
|
|
4.51 |
|
|
|
55.5% |
|
|
|
1,867,000 |
|
|
|
2,756,000 |
|
07/3/2012 |
|
$ |
6.45 |
|
|
|
69.3% |
|
|
|
0.16% |
|
|
|
1.01 |
|
|
|
55.5% |
|
|
|
930,000 |
|
|
|
509,000 |
|
12/13/2011 |
|
$ |
12.45 |
|
|
|
74.4% |
|
|
|
0.54% |
|
|
|
3.95 |
|
|
|
52.3% |
|
|
|
330,000 |
|
|
|
480,000 |
|
10/6/2010 |
|
$ |
1.80 |
|
|
|
76.0% |
|
|
|
0.72% |
|
|
|
4.80 |
|
|
|
46.4% |
|
|
|
17,000 |
|
|
|
35,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
4,892,000 |
|
Significant assumptions used and related fair
values for the warrants as of December 31, 2011 were as follows:
Original Issuance |
|
Exercise Price |
|
|
Volatility |
|
|
Risk Free Interest Rate |
|
|
Term (years) |
|
|
Market Discount |
|
|
Warrants Outstanding |
|
|
Fair Value |
|
12/13/2011 |
|
$ |
22.50 |
|
|
|
68.0% |
|
|
|
0.83% |
|
|
|
4.96 |
|
|
|
52.0% |
|
|
|
330,000 |
|
|
$ |
1,695,000 |
|
10/6/2010 |
|
$ |
6.75 |
|
|
|
68.0% |
|
|
|
1.09% |
|
|
|
5.90 |
|
|
|
47.4% |
|
|
|
34,000 |
|
|
|
226,000 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
$ |
1,921,000 |
|
|
Summary of fair value measurements by level |
The following table summarizes
fair value measurements by level at March 31, 2013 (in thousands):
|
|
Level
1 |
|
|
Level
2 |
|
|
Level
3 |
|
|
Total |
|
Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commodity contracts(1) |
|
$ |
205 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
205 |
|
Total
Assets |
|
$ |
205 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
205 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Liabilities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warrants(2) |
|
$ |
|
|
|
$ |
|
|
|
$ |
8,079 |
|
|
$ |
8,079 |
|
Conversion feature(2) |
|
|
|
|
|
|
|
|
|
|
1,401 |
|
|
|
1,401 |
|
Commodity contracts(3) |
|
|
115 |
|
|
|
|
|
|
|
|
|
|
|
115 |
|
Total
Liabilities |
|
$ |
115 |
|
|
$ |
|
|
|
$ |
9,480 |
|
|
$ |
9,595 |
|
(1) Included in other current
assets in the consolidated balance sheets.
(2) Included in warrant
liabilities and conversion feature at fair value in the consolidated balance sheets.
(3) Included in
accrued liabilities in the consolidated balance sheets.
The following table summarizes
fair value measurements by level at December 31, 2012 (in thousands):
|
|
Level
1 |
|
|
Level
2 |
|
|
Level
3 |
|
|
Total |
|
Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commodity
contracts(1) |
|
$ |
189 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
189 |
|
Total
Assets |
|
$ |
189 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
189 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Liabilities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warrants |
|
$ |
|
|
|
$ |
|
|
|
$ |
4,892 |
|
|
$ |
4,892 |
|
Commodity contracts(2) |
|
|
167 |
|
|
|
|
|
|
|
|
|
|
|
167 |
|
Total
Liabilities |
|
$ |
167 |
|
|
$ |
|
|
|
$ |
4,892 |
|
|
$ |
5,059 |
|
(1) Included
in other current assets in the consolidated balance sheets.
(2) Included
in accrued liabilities in the consolidated balance sheets.
|
|
|
Level
1 |
|
|
Level
2 |
|
|
Level
3 |
|
|
Total |
|
Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commodity contracts(1) |
|
$ |
189 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
189 |
|
Total
Assets |
|
$ |
189 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
189 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Liabilities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warrants |
|
$ |
|
|
|
$ |
|
|
|
$ |
4,892 |
|
|
$ |
4,892 |
|
Commodity contracts(2) |
|
|
167 |
|
|
|
|
|
|
|
|
|
|
|
167 |
|
Total
Liabilities |
|
$ |
167 |
|
|
$ |
|
|
|
$ |
4,892 |
|
|
$ |
5,059 |
|
(1) Included in other
current assets in the consolidated balance sheets.
(2) Included in other
current liabilities in the consolidated balance sheets.
The following
table summarizes fair value measurements by level at December 31, 2011 (in thousands):
|
|
Level
1 |
|
|
Level
2 |
|
|
Level
3 |
|
|
Total |
|
Assets: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Commodity contracts(1) |
|
$ |
244 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
244 |
|
Total
Assets |
|
$ |
244 |
|
|
$ |
|
|
|
$ |
|
|
|
$ |
244 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Liabilities: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Warrants |
|
$ |
|
|
|
$ |
|
|
|
$ |
1,921 |
|
|
$ |
1,921 |
|
Commodity contracts(2) |
|
|
500 |
|
|
|
|
|
|
|
|
|
|
|
500 |
|
Total
Liabilities |
|
$ |
500 |
|
|
$ |
|
|
|
$ |
1,921 |
|
|
$ |
2,421 |
|
(1) Included in other
assets in the consolidated balance sheets.
(2) Included in other
liabilities in the consolidated balance sheets.
|
Changes in fair value of Level 3 inputs |
|
|
Warrants |
|
|
Conversion
Feature |
|
Balance, December 31, 2012 |
|
$ |
4,892 |
|
|
$ |
|
|
Issuance of warrants in January
offering |
|
|
2,657 |
|
|
|
|
|
Issuance of notes and warrants
in March offering |
|
|
883 |
|
|
|
1,401 |
|
Exercises of warrants |
|
|
(260 |
) |
|
|
|
|
Adjustments
to fair value for the period |
|
|
(93 |
) |
|
|
|
|
Balance, March 31, 2013 |
|
$ |
8,079 |
|
|
$ |
1,401 |
|
|
The changes in the Companys fair
value of its Level 3 inputs were as follows (in thousands):
|
|
Warrants |
|
|
Convertible Notes |
|
|
|
|
|
|
|
|
|
|
Balance, December 31, 2010 |
|
$ |
5,718 |
|
|
$ |
38,108 |
|
Retirement of Convertible Notes |
|
|
|
|
|
|
(35,000 |
) |
Issuance of 2011 Warrants |
|
|
1,809 |
|
|
|
|
|
Exercises of Warrants |
|
|
(1,155 |
) |
|
|
|
|
Adjustments to fair value for the period |
|
|
(4,451 |
) |
|
|
(3,108 |
) |
Balance, December 31, 2011 |
|
$ |
1,921 |
|
|
$ |
|
|
Issuance of July Offering Warrants |
|
$ |
3,380 |
|
|
$ |
|
|
Issuance of September Offering Warrants |
|
|
1,658 |
|
|
|
|
|
Exercises of Warrants |
|
|
(113 |
) |
|
|
|
|
Adjustments to fair value for the period |
|
|
(1,954 |
) |
|
|
|
|
Balance, December 31, 2012 |
|
$ |
4,892 |
|
|
$ |
|
|
|