Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Details)

v3.19.1
Leases - Additional Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2019
USD ($)
Lease
Mar. 31, 2018
USD ($)
Jan. 01, 2019
USD ($)
Operating Leased Assets [Line Items]      
Operating lease right-of-use-assets $ 3,084   $ 3,200
Number of leases | Lease 2    
Operating lease, discount rate 7.00%    
Operating lease, weighted average remaining lease term 8 years    
operating lease expense $ 100    
Operating lease , cash payment 100    
Rent expense   $ 100  
Operating lease right-of-use-assets amortization $ 81    
Office Building [Member]      
Operating Leased Assets [Line Items]      
Lease expiration period 2027    
Manufacturing Facility [Member]      
Operating Leased Assets [Line Items]      
Lease expiration period 2021