Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies Schedule of Contract Termination (Details)

v3.19.1
Commitments and Contingencies Schedule of Contract Termination (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Restructuring Reserve [Roll Forward]      
Contract termination obligation, beginning of the period   $ 194 $ 0
Lease termination costs incurred   224 72
Sublease payment received $ 122   122
Accretion expense   33  
Payments on obligations   (229)  
Change in currency exchange rate   4  
Contract termination obligation, end of the period 194 218 194
London, United Kingdom      
Restructuring Reserve [Roll Forward]      
Contract termination obligation, beginning of the period   194 0
Lease termination costs incurred   0 72
Sublease payment received     122
Accretion expense   14  
Payments on obligations   (189)  
Change in currency exchange rate   (4)  
Contract termination obligation, end of the period 194 15 194
Minneapolis Headquarters      
Restructuring Reserve [Roll Forward]      
Contract termination obligation, beginning of the period   0 0
Lease termination costs incurred   224 0
Sublease payment received     0
Accretion expense   19  
Payments on obligations   (40)  
Change in currency exchange rate   0  
Contract termination obligation, end of the period $ 0 $ 203 $ 0