The tables below summarize warrant activity for 2013 and assumptions utilized to value the warrants (in thousands except for per warrant data):
Original Warrant Issue Date | ||||||||||||
June 3, 2013 | November 15, 2013 |
Total as of December 31, 2013 |
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Value of warrants issued |
$ | 4,392 | $ | 13,205 | $ | 17,597 | ||||||
Changes in fair value, net |
(175 | ) | (1,851 | ) | (2,026 | ) | ||||||
Value of warrants exercised |
(500 | ) | (500 | ) | ||||||||
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Value of warrants at December 31, 2013 |
$ | 3,717 | $ | 11,354 | $ | 15,071 | ||||||
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Number of warrants outstanding |
1,655 | 5,015 | 6,670 |