Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.10.0.1
Stockholders' Equity (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 01, 2018
Sep. 30, 2018
Sep. 30, 2017
Subsidiary Sale Of Stock [Line Items]      
Common stock issued, Shares   316,080  
Proceeds from issuance of common stock   $ 7,901 $ 1,377
IPO [Member] | Subsequent Event [Member]      
Subsidiary Sale Of Stock [Line Items]      
Common stock issued, Shares 4,485,000    
Proceeds from issuance of common stock $ 67,300