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Intangible assets (Tables)
3 Months Ended
Mar. 31, 2017
Intangible assets  
Schedule of finite-lived intangible assets

 

 

March 31,

 

December 31,

 

 

 

2017

 

2016

 

 

 

in thousands

 

Licenses

 

$

7,910

 

$

7,799

 

Acquired research & development

 

4,977

 

4,908

 

 

 

 

 

 

 

Total intangible assets

 

12,887

 

12,707

 

Less accumulated amortization

 

(4,530

)

(4,383

)

 

 

 

 

 

 

Intangible assets, net

 

$

8,357

 

$

8,324