Leases - Additional Information (Details)	6 Months Ended
	Jun. 30, 2019 USD ($)
Lessee Lease Description [Line Items]
Operating lease, existence of option to extend	true
Right-of-use lease assets in exchange for operating lease liabilities	$ 318,000
Maximum [Member]
Lessee Lease Description [Line Items]
Leases, initial term	12 months
Operating lease renewal term	10 years
Minimum [Member]
Lessee Lease Description [Line Items]
Operating lease renewal term	1 year