Leases - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease, liability	$ 244
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Operating lease, liability		$ 300
Right-of-use asset		$ 300