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Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2012
Stockholders' Equity  
Schedule of redemption prices per share

 

 

Year from November 1, 2012 to October 31, 2013

 

$

10.12

 

Year from November 1, 2013 to October 31, 2014

 

$

10.06

 

November 1, 2014 and thereafter

 

$

10.00

 

Schedule of conversion of convertible preferred stock

 

 

 

 

Year ended
December 31,
2010

 

Preferred shares exchanged

 

833,671

 

Common shares issued:

 

 

 

At stated convertible option

 

50,679

 

Incremental shares issued under the exchange transaction

 

185,835

 

Total common shares issued

 

236,514

 

Schedule of warrants outstanding

The following table summarizes information about warrants outstanding at December 31, 2012:

 

Issued in Connection With 

 

Expiration
Date

 

Common
Shares

Issuable

 

Weighted
Average
Exercise
Price

 

April 2006 stock issuance

 

2013

 

367,347

 

$

49.00

 

February 2007 stock issuance

 

2014

 

151,773

 

$

59.08

 

December 2007 CEFF

 

2013

 

14,285

 

$

9.80

 

July 2009 Series II stock issuance

 

2014

 

98,893

 

$

7.00

 

January 2010 stock issuance

 

2015

 

101,785

 

$

22.82

 

January 2010 stock issuance

 

2015

 

100,714

 

$

19.95

 

October 2010 stock issuance

 

2015

 

594,513

 

$

13.44

 

July 2011 stock issuance

 

2016

 

544,117

 

$

9.52

 

Total

 

 

 

1,973,427

 

$

22.96