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Leases - Finance Lease Obligations And Operating Lease Obligations (Detail) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Remainder of 2019 $ 4,473  
2020 15,545  
2021 10,857  
2022 6,544  
2023 3,801  
Thereafter 5,127  
Total minimum lease payments 46,347 $ 48,792
Less: Amounts representing interest (4,186)  
Present value of future minimum lease payments 42,161  
Less: Current obligation under leases (15,032)  
Long-term lease obligations 27,129  
Remainder of 2019 1,233  
2020 2,854  
2021 1,845  
2022 911  
2023 532  
Thereafter 131  
Total minimum lease payments 7,506  
Less: Amounts representing executory costs (195)  
Less: Amounts representing interest (496)  
Present value of future minimum lease payments 6,815  
Less: Current obligation under leases (3,133) (4,806)
Long-term lease obligations 3,682 $ 3,824
Other Party Operating Leases [Member]    
Remainder of 2019 4,213  
2020 14,490  
2021 9,947  
2022 5,708  
2023 3,386  
Thereafter 4,304  
Total minimum lease payments 42,048  
Related Party Operating Leases [Member]    
Remainder of 2019 260  
2020 1,055  
2021 910  
2022 836  
2023 415  
Thereafter 823  
Total minimum lease payments $ 4,299