Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Dec. 30, 2017
Deferred Revenue Arrangement [Line Items]
Net Sales	$ 388,633
Deferred Revenue	73,000		$ 73,000
Deferred Costs	45,000		43,000
Contract with Customer, Liability, Revenue Recognized	8,000
Sales Return Liability [Roll Forward]
Balance at beginning of year	19,270	$ 15,222
Additions that reduce net sales	20,651	21,184
Deductions from reserves	(20,905)	(18,205)
Balance at end of period	$ 19,016	$ 18,201
Nonsoftware Service, Support and Maintenance Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Product's Estimated Life	4 years
Other Current Assets [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Costs, Current	$ 18,000		17,000
Other Noncurrent Assets [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Costs, Noncurrent	27,000		26,000
Other Current Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Current	31,000		30,000
Other Noncurrent Liabilities [Member]
Deferred Revenue Arrangement [Line Items]
Deferred Revenue, Noncurrent	42,000		$ 43,000
Retail Site [Member]
Deferred Revenue Arrangement [Line Items]
Net Sales	356,069
Online and phone [Member]
Deferred Revenue Arrangement [Line Items]
Net Sales	27,967
Company-Controlled channel [Member]
Deferred Revenue Arrangement [Line Items]
Net Sales	384,036
Wholesale/Other channel [Member]
Deferred Revenue Arrangement [Line Items]
Net Sales	$ 4,597
Transferred at Point in Time [Member]
Deferred Revenue Arrangement [Line Items]
Revenue Percent	98.00%