Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disaggregation Of Revenue [Line Items]
Net Sales	$ 474,778	$ 414,779	$ 1,257,186	$ 1,119,750
Retail
Disaggregation Of Revenue [Line Items]
Net Sales	437,871	383,886	1,158,096	1,026,808
Online and Phone
Disaggregation Of Revenue [Line Items]
Net Sales	34,520	28,686	89,695	81,580
Company-Controlled Channel
Disaggregation Of Revenue [Line Items]
Net Sales	472,391	412,572	1,247,791	1,108,388
Wholesale/Other Channel
Disaggregation Of Revenue [Line Items]
Net Sales	$ 2,387	$ 2,207	$ 9,395	$ 11,362

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration