5. Shareholders' equity

6 Months Ended

Jun. 30, 2016

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

5. Shareholders’ equity

Changes in shareholders’ equity for the six months ended June 30, 2016 were as follows (in thousands):

We paid a portion of the 2015 incentive bonus for the chief executive officer and chief financial officer in the form of 28,231 deferred stock units.  Such deferred stock units were granted in February 2016 and were fully vested at the time of grant.