Quarterly report pursuant to Section 13 or 15(d)

Operating and Finance Lease Right-of-Use Assets - Summary of Future Lease Payments (Detail)

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Operating and Finance Lease Right-of-Use Assets - Summary of Future Lease Payments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Lessee, Lease, Description [Line Items]      
Operating Leases, 2019 (Apr-Dec) $ 10,576    
Operating Leases, 2020 14,450    
Operating Leases, 2021 13,329    
Operating Leases, 2022 11,728    
Operating Leases, 2023 10,132    
Operating Leases, Thereafter 47,630    
Undiscounted Cash Flows 107,845    
Less: imputed interest 36,534    
Reconciliation to lease liabilities:      
Lease liabilities - current 9,464    
Lease liabilities - long-term 61,847    
Total Lease Liabilities 71,311 $ 74,400  
Finance Leases, 2019 (Apr-Dec) 64    
Finance Leases, 2020 66    
Finance Leases, 2021 51    
Finance Leases, 2022 43    
Finance Leases, 2023 22    
Finance Leases, Thereafter 3    
Finance Leases, Undiscounted Cash Flows 249    
Less: Finance Leases, imputed interest 19    
Finance Leases, Reconciliation to lease liabilities:      
Finance Leases, Lease liabilities - current 74   $ 58
Finance Leases, Lease liabilities - long-term 156   105
Total Finance Lease Liabilities 230    
Contractual Obligations, 2019 (Apr-Dec) 10,640    
Contractual Obligations, 2020 14,516   13,394
Contractual Obligations, 2021 13,380   12,394
Contractual Obligations, 2022 11,771   11,247
Contractual Obligations, 2023 10,154   9,826
Contractual Obligations, Thereafter 47,633   61,473
Contractual Obligations, Undiscounted Cash Flows 108,094   $ 121,755
Less: Contractual Obligations, imputed interest 36,553    
Contractual Obligations, Reconciliation to lease liabilities:      
Contractual Obligations, Lease liabilities - current 9,538    
Contractual Obligations, Lease liabilities - long-term 62,003    
Total Contractual Obligations, Lease Liabilities 71,541    
Related Party Lease [Member]      
Lessee, Lease, Description [Line Items]      
Operating Leases, 2019 (Apr-Dec) 1,227    
Operating Leases, 2020 1,665    
Operating Leases, 2021 1,669    
Operating Leases, 2022 1,647    
Operating Leases, 2023 1,207    
Operating Leases, Thereafter 7,510    
Undiscounted Cash Flows 14,925    
Less: imputed interest 5,389    
Reconciliation to lease liabilities:      
Lease liabilities - current 903    
Lease liabilities - long-term 8,633    
Total Lease Liabilities 9,536    
Other Operating Leases [Member]      
Lessee, Lease, Description [Line Items]      
Operating Leases, 2019 (Apr-Dec) 9,349    
Operating Leases, 2020 12,785    
Operating Leases, 2021 11,660    
Operating Leases, 2022 10,081    
Operating Leases, 2023 8,925    
Operating Leases, Thereafter 40,120    
Undiscounted Cash Flows 92,920    
Less: imputed interest 31,145    
Reconciliation to lease liabilities:      
Lease liabilities - current 8,561    
Lease liabilities - long-term 53,214    
Total Lease Liabilities $ 61,775