Assets and Liabilities Held for Sale - Summary of Assets and Liabilities of Disposal Group Classified as Held for Sale (Detail) $ in Thousands	Sep. 30, 2018 USD ($)
Discontinued Operations And Disposal Groups [Abstract]
Accounts receivable, less allowance of $89	$ 11,562
Inventory, net	14,435
Prepaid expenses and other assets	533
Property and equipment, net	13,259
Goodwill	6,844
Other intangible assets, net	6,552
Deferred income tax assets	4,798
Other non-current assets	391
Impairment loss	(2,190)
Total assets held for sale	56,184
Accounts payable	3,124
Accrued liabilities	10,349
Total liabilities held for sale	$ 13,473