Quarterly report pursuant to Section 13 or 15(d)

Separation Charges (Details)

v3.19.1
Separation Charges (Details) - Former Chairman of the Board, President and Chief Executive Officer - USD ($)
$ in Thousands
3 Months Ended
May 11, 2018
Mar. 31, 2019
Mar. 31, 2018
Separation Charges      
Cash payments to be paid in the next 12 months $ 700    
Period for consecutive equal monthly installments 12 months    
Lump sum cash payment $ 30    
Payment of accrued vacation $ 40    
Vested (in shares) 109,084    
Restructuring expenses   $ 0 $ 0
Maximum      
Separation Charges      
Period of lump sum payment 30 days