Quarterly report pursuant to Section 13 or 15(d)

Leases - Additional Information (Detail)

v3.19.3
Leases - Additional Information (Detail) - USD ($)
 9 Months Ended
Jan. 02, 2019
Sep. 30, 2019
Jan. 01, 2019
Lessee Lease Description [Line Items]      
Operating lease, options to renew term   1 year  
Lessee, Operating Lease, Existence of Option to Extend [true false]   true  
Operating lease, right-of-use asset   $ 400,000  
Operating lease, liability   491,000  
Lessee, operating lease incremental borrowing rate     12.78%
Lease liabilities   $ 600,000  
Operating lease, lease not yet commenced, description   The Company did not enter into any new lease arrangements nor did it have any arrangements that had not commenced.  
ASU 2016-02      
Lessee Lease Description [Line Items]      
Operating lease, right-of-use asset   $ 800,000 $ 800,000
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List     us-gaap:OtherAssetsNoncurrent
Adjustment for deferred rent     $ 200,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]     us-gaap:AccruedLiabilitiesCurrent
Operating lease, liability   1,000,000 $ 1,000,000
Cumulative-effect adjustment to retained earnings $ 0 $ 0  
Minimum      
Lessee Lease Description [Line Items]      
Lease term   1 year  
Maximum      
Lessee Lease Description [Line Items]      
Lease term   5 years  
Lease initial term of contract   1 year