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Intangible assets (Tables)
12 Months Ended
Dec. 31, 2016
Intangible assets  
Schedule of finite-lived intangible assets

                                                                                                                                                                                    

 

 

December 31, 2016

 

December 31, 2015

 

 

 

Average
remaining life

 

Historical
costs

 

Accumulated
amortization

 

Carrying
amount

 

Historical
costs

 

Accumulated
amortization

 

Carrying
amount

 

 

 

in thousands, except for average remaining life

 

Licenses

 

 

14.8

 

$

7,799

 

$

(3,952

)

$

3,847

 

$

5,730

 

$

(3,816

)

$

1,914

 

Acquired R&D

 

 

17.3

 

 

4,908

 

 

(431

)

 

4,477

 

 

5,080

 

 

(179

)

 

4,901

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

Total

 

 

16.2

 

$

12,707

 

$

(4,383

)

$

8,324

 

$

10,810

 

$

(3,995

)

$

6,815

 

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

​  

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Schedule of estimated future amortization expense

                                                                                                                                                                                    

Years

 

Amount

 

 

 

($ in thousands)

 

2017

 

$

569 

 

2018

 

 

566 

 

2019

 

 

533 

 

2020

 

 

513 

 

2021

 

 

509 

 

Thereafter

 

 

5,634 

 

​  

​  

Total

 

$

8,324 

 

​  

​  

​  

​  

 

Schedule of acquired licenses

                                                                                                                                                                                    

 

 

December 31,
2016

 

December 31,
2015

 

 

 

in thousands

 

National Institutes of Health

 

$

738 

 

$

866 

 

St. Jude Children's Hospital

 

 

659 

 

 

723 

 

Protein Sciences Corporation

 

 

2,194 

 

 

49 

 

Other

 

 

256 

 

 

276 

 

​  

​  

​  

​  

Total

 

$

3,847 

 

$

1,914 

 

​  

​  

​  

​  

​  

​  

​  

​