Leases Maturities of lease liabilities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
2019 (excluding the six months ended June 30, 2019)	$ 17,057
2020	32,641
2021	26,697
2022	30,665
2023	23,856
Thereafter	184,070
Total lease payments	314,986
Less: imputed interest	102,704
Total operating lease liabilities	$ 212,282