XML 36 R14.htm IDEA: XBRL DOCUMENT v3.3.1.900
Lease Exit Liability
12 Months Ended
Dec. 31, 2015
Lease Exit Liability [Abstract]  
Lease Exit Liability
8.  Lease Exit Liability
 
On July 16, 2008, the Company acquired Raven Biotechnologies, Inc. (Raven), a private South San Francisco-based company focused on the development of monoclonal antibody therapeutics for treating cancer. Raven was considered a development-stage enterprise as defined in ASC 915, Development Stage Entities. In connection with the acquisition, the Company issued 12,466,039 shares of its Series D convertible preferred stock in exchange for all of the outstanding capital stock and convertible notes payable of Raven.

The Company undertook restructuring activities related to the acquisition of Raven. These restructuring activities included reductions in staffing levels and the intended exit of leased facilities. All severance-related payments were completed in the year ended December 31, 2009.  In connection with these restructuring activities, as part of the cost of acquisition, the Company established a restructuring liability attributed to an existing operating lease. The terms of the operating lease extend into 2018.

Changes in the lease exit liability are as follows (in thousands):
 
Accrual balance at December 31, 2013
 
$
$9,445
 
Principal payments
  
(1,439
)
Accrual balance at December 31, 2014
  
8,006
 
Principal payments and other adjustments
  
(3,293
)
Accrual balance at December 31, 2015
 
$
$4,713
 

During 2015, the Company corrected an immaterial error attributed to the estimated lease term that resulted in a reduction of research and development expense of $1.9 million.

Future principal payments to be made under the lease agreement as of December 31, 2015 are as follows (in thousands):

2016
 
$
2,020
 
2017
  
2,281
 
2018
  
412
 
Total
 
$
4,713
 

The purchase agreement provides for a specified total of certain contingent milestones that are based on the achievement of certain product sales derived from the acquired Raven technology. Also, a onetime payment of $5.0 million will be made to the Raven stockholders upon the initiation of patient dosing in the first Phase 2 clinical trial of any product derived from the Raven "Cancer Stem Cell Program." No payment shall be made if the Phase 2 trial start date has not occurred on or before July 15, 2018. Other consideration includes a percentage of revenue (excluding consideration for research and development and equity) received by the Company for license of a product derived from the Raven "Cancer Stem Cell Program" and a onetime payment ranging from $8.0 million to $12.0 million dependent upon a specified level of sales of products derived from the Raven "Cancer Stem Cell Program."

The contingent consideration will be accounted for as additional purchase price and recorded as incremental in-process research and development expense when it is deemed probable that the contingencies will be attained. No additional amounts have been recorded during the years ended December 31, 2015, 2014, and 2013.