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Leases - Finance Lease Obligations And Operating Lease Obligations (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Remainder of 2019 $ 8,854  
2020 14,788  
2021 10,320  
2022 6,333  
2023 3,993  
Thereafter 7,009  
Total minimum lease payments 51,297 $ 48,792
Less: Amounts representing interest (5,305)  
Present value of future minimum lease payments 45,992  
Less: Current obligation under leases 15,028  
Long-term lease obligations 30,964  
Remainder of 2019 2,562  
2020 2,735  
2021 1,765  
2022 831  
2023 452  
Thereafter 79  
Total minimum lease payments 8,424  
Less: Amounts representing executory costs (221)  
Less: Amounts representing interest (522)  
Present value of future minimum lease payments 7,681  
Less: Current obligation under leases 3,738 4,806
Long-term lease obligations 3,943 $ 3,824
Other Party Operating Leases [Member]    
Remainder of 2019 8,276  
2020 13,610  
2021 9,287  
2022 5,374  
2023 3,537  
Thereafter 6,186  
Total minimum lease payments 46,270  
Related Party Operating Leases [Member]    
Remainder of 2019 578  
2020 1,178  
2021 1,033  
2022 959  
2023 456  
Thereafter 823  
Total minimum lease payments $ 5,027