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Leases - Finance Lease Obligations and Operating Lease Obligations (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Finance Leases
2021	$ 2,315
2022	1,228
2023	867
2024	453
2025	85
Thereafter	0
Total minimum lease payments	4,948
Less: Amounts representing executory costs	(88)
Less: Amounts representing interest	(357)
Present value of future minimum lease payments	4,503
Less: Current obligation under leases	(2,073)	$ (2,747)
Long-term lease obligations	2,430	3,597
Operating Leases
2021	20,357
2022	14,915
2023	9,164
2024	4,558
2025	2,919
Thereafter	5,623
Total minimum lease payments	57,536
Less: Amounts representing interest	(4,365)
Present value of future minimum lease payments	53,171
Less: Current obligation under leases	(18,758)	(15,459)
Long-term lease obligations	34,413	$ 29,785
Related Party
Operating Leases
2021	1,061
2022	986
2023	534
2024	548
2025	561
Thereafter	526
Total minimum lease payments	4,216
Other
Operating Leases
2021	19,296
2022	13,929
2023	8,630
2024	4,010
2025	2,358
Thereafter	5,097
Total minimum lease payments	$ 53,320

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