Leases - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Right-of-use assets	$ 72,817
Lease liabilities	$ 76,750
Renewal term	5 years
Termination period	1 year
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
Right-of-use assets		$ 72,100
Lease liabilities		$ 75,800
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term	20 years