Lease Accounting - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Lease execution costs	$ 127
Remaining lease term	44 years
Renewal term	54 years
Sublease income	$ 941
Minimum [Member]
Lessee, Lease, Description [Line Items]
Renewal term	5 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Renewal term	10 years