Lease Disclosures Future minimum lease payments under noncancelable leases as lessee (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Finance Leases
2019 (remaining six months)	$ 10,300
2020	20,100
2021	16,500
2022	14,700
2023	11,600
Thereafter	65,000
Total minimum lease payments	138,200
Less: interest/imputed interest	(41,000)
Total obligations	97,200
Less: current portion	(12,900)
Long-term lease obligations	84,344
Operating Leases
2019 (remaining six months)	46,200
2020	94,600
2021	77,800
2022	70,000
2023	57,500
Thereafter	217,700
Total minimum lease payments	563,800
Less: interest/imputed interest	(117,000)
Total obligations	446,800
Less: current portion	(67,724)
Long-term lease obligations	$ 379,123