Leases - Maturity Schedule (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Finance Lease
2019	$ 2,035
2020	2,151
2021	1,444
2022	1,238
2023	1,156
2024	751
Thereafter	1,098
Total lease payments	9,873
Less amount representing interest	(1,451)
Present value of lease liabilities	8,422
Operating Lease
2019	72,302
2020	79,713
2021	51,584
2022	49,454
2023	48,396
2024	40,211
Thereafter	198,494
Total lease payments	540,154
Less amount representing interest	(130,666)
Present value of lease liabilities	409,488
Lease Liabilities Payments Due [Abstract]
2019	74,337
2020	81,864
2021	53,028
2022	50,692
2023	49,552
2024	40,962
Thereafter	199,592
Total lease payments	550,027
Less amount representing interest	132,117
Total lease liabilities	$ 417,910