Nature of Business, Basis of Presentation and Significant Accounting Policies - Textual (Details) - USD ($) $ in Thousands		9 Months Ended
	Dec. 31, 2018	Sep. 28, 2019	Sep. 29, 2018	Dec. 30, 2018
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration		91 days	91 days
Lease, practical expedients, package		true
Lease liability		$ 9,966
Lease payments to lessors		2,553
Operating lease, right to use asset		9,996
Topic 842 [Member]
Accounting Policies [Line Items]
Lease liability		100		$ 11,500
Lease payments to lessors	$ 100
Operating lease, right to use asset		$ 800		$ 11,600
Minimum [Member]
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration		364 days
Maximum [Member]
Accounting Policies [Line Items]
Fiscal year/fiscal quarter duration		371 days