Leases - Additional Information (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 28, 2019
Jan. 01, 2019
Lessee, Lease, Description [Line Items]    
Right-of-use assets $ 17,987  
Right-of-use assets resulting from new operating lease liabilities $ 5,200  
Weighted average remaining lease term 3 years 10 months 20 days  
Weighted average remaining discount rate 6.00%  
ASU 2016-02    
Lessee, Lease, Description [Line Items]    
Right-of-use assets   $ 19,200
Minimum    
Lessee, Lease, Description [Line Items]    
Operating lease terms 1 year  
Maximum    
Lessee, Lease, Description [Line Items]    
Operating lease terms 10 years