Right-of-Use ("ROU") Assets and Lease Liabilities - Schedule of Operating and Finance Lease Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating Leases
2020 (excluding the nine months ended September 30, 2020)	$ 8,700	$ 32,257
2021	33,454	29,816
2022	29,184	24,429
2023	23,548	18,704
2024	16,594	11,882
2025 and thereafter	25,919	17,730
Total lease payments	137,399	134,818
Less: amount representing interest	(13,376)	(14,750)
Total	124,023	120,068
Current portion of lease liabilities	29,767	27,689
Long-term portion of lease liabilities	94,256	92,379
Finance Leases
2020 (excluding the nine months ended September 30, 2020)	706	2,908
2021	2,447	2,445
2022	1,537	1,496
2023	965	976
2024	94	95
2025 and thereafter	58	87
Total lease payments	5,807	8,007
Less: amount representing interest	(378)	(623)
Total	5,429	7,384
Current portion of lease liabilities	2,395	2,618
Long-term portion of lease liabilities	3,034	4,766
Total
2020 (excluding the nine months ended September 30, 2020)	9,406	35,165
2021	35,901	32,261
2022	30,721	25,925
2023	24,513	19,680
2024	16,688	11,977
2025 and thereafter	25,977	17,817
Total lease payments	143,206	142,825
Less: amount representing interest	(13,754)	(15,373)
Total	129,452	127,452
Current portion of lease liabilities	32,162	30,307
Long-term portion of lease liabilities	$ 97,290	$ 97,145