Leases - Schedule of Future Minimum Lease Payments on Rolling Twelve-month Basis under Operating and Finance Leases (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
Year 1	$ 4,154
Year 2	3,607
Year 3	2,362
Year 4	1,261
Year 5	842
Thereafter	4,296
Total minimum lease payments	16,522
Less: amount representing interest	3,306
Present value of net minimum lease payments	13,216
Finance Leases
Year 1	26,010
Year 2	21,732
Year 3	17,117
Year 4	10,780
Year 5	6,553
Thereafter	7,528
Total minimum lease payments	89,720
Less: amount representing interest	10,657
Present value of net minimum lease payments	$ 79,063