Annual report pursuant to Section 13 and 15(d)

401 (k) Employee Benefits Plan (Details)

v3.19.1
401 (k) Employee Benefits Plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Retirement Benefits [Abstract]    
Maximum annual contribution percentage per employee 75.00%  
Employer discretionary contributions to the plan $ 258 $ 297