Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Maturities of lease liabilities: Operating lease
2020 (remaining six months)	$ 33,509
2021	55,402
2022	30,511
2023	13,498
2024	8,367
Thereafter	3,346
Total lease payments	144,633
Less: Imputed interest	(8,295)
Total	136,338	$ 142,705
Less: Current portion	(58,625)	(57,910)
Long-term portion of lease obligations	77,713	84,795
Maturities of lease liabilities: Finance lease
2020 (remaining six months)	37,765
2021	82,610
2022	48,307
2023	40,942
2024	30,707
Total lease payments	240,331
Less: Imputed interest	(39,060)
Total	201,271	233,199
Less: Current portion	(64,501)	(61,493)
Long-term portion of lease obligations	136,770	$ 171,706
Future minimum payments for total lease liabilities
2020 (remaining six months)	71,274
2021	138,012
2022	78,818
2023	54,440
2024	39,074
Thereafter	3,346
Total lease payments	384,964
Less: Imputed interest	(47,355)
Total	337,609
Less: Current portion	(123,126)
Long-term portion of lease obligations	$ 214,483