Leases - Additional information (Details)	6 Months Ended
	Jun. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Lease renewal term	10 years
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease term	1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Remaining lease term	77 years