Related Party Transactions - Summary of Principal Balance Outstanding under Related Party Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 30, 2018
Related Party Transaction [Line Items]
Principal balance outstanding under lease	$ 33,348
Beacon Investment Corporation [Member]
Related Party Transaction [Line Items]
Principal balance outstanding under lease	9,134	$ 9,851
HLP, SPC & Adjacent Sales Facility [Member]
Related Party Transaction [Line Items]
Principal balance outstanding under lease	$ 7,243	$ 8,141

Present value of lessee's discounted obligation for lease payments from finance lease.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

Name:	us-gaap_FinanceLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant