5. Shareholders' equity

3 Months Ended

Mar. 31, 2016

Stockholders' Equity Note [Abstract]

Stockholders' Equity Note Disclosure [Text Block]

5. Shareholders’ equity

Changes in shareholders’ equity for the three months ended March 31, 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 deferred stock units.  Such deferred stock units were granted in February 2016 and were fully vested at the time of grant.