Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Lease Contract Termination (Details)

v3.10.0.1
Commitments and Contingencies Lease Contract Termination (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Restructuring Reserve [Roll Forward]    
Contract termination obligation, beginning of period $ 317 $ 194
Lease termination costs incurred 0 224
Accretion expense 9 22
Payments on obligations (62) (176)
Change in currency exchange rate (2) (2)
Contract termination obligation, end of period 262 262
London, United Kingdom [Member]    
Restructuring Reserve [Roll Forward]    
Contract termination obligation, beginning of period 103 194
Lease termination costs incurred 0 0
Accretion expense 3 12
Payments on obligations (50) (150)
Change in currency exchange rate 2 2
Contract termination obligation, end of period 54 54
Minneapolis Headquarters [Member]    
Restructuring Reserve [Roll Forward]    
Contract termination obligation, beginning of period 214 0
Lease termination costs incurred 0 224
Accretion expense 6 10
Payments on obligations (12) (26)
Change in currency exchange rate 0 0
Contract termination obligation, end of period $ 208 208
Business Exit Costs   $ 177