Leases - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Lessee Lease Description [Line Items]
Lessee, operating lease, existence of option to extend	true
Cash paid for operating leases	$ 1.4
Right-of-use assets obtained in exchange for operating lease obligations	$ 0.8
Minimum
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	1 year
Maximum
Lessee Lease Description [Line Items]
Lessee, operating lease, renewal term	10 years