Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Revenue:
Total net revenue	$ 260,007	$ 429,451	$ 729,711	$ 890,666
Costs applicable to revenue (exclusive of depreciation and amortization):
Total costs applicable to revenue	140,780	202,506	359,334	414,475
Operating expenses:
Selling, general and administrative expenses	136,582	182,278	330,323	376,154
Depreciation and amortization	21,924	20,819	46,734	41,234
Asset impairment	2,411	1,790	13,766	3,872
Litigation settlement	0	0	4,395	0
Other expense (income), net	(92)	356	(158)	829
Total operating expenses	160,825	205,243	395,060	422,089
Income (loss) from operations	(41,598)	21,702	(24,683)	54,102
Interest expense, net	15,502	8,968	22,957	18,029
Debt issuance costs	136	0	136	0
Earnings (loss) before income taxes	(57,236)	12,734	(47,776)	36,073
Income tax provision (benefit)	(13,403)	2,477	(13,685)	8,387
Net income (loss)	$ (43,833)	$ 10,257	$ (34,091)	$ 27,686
Earnings (loss) per share:
Basic (in usd per share)	$ (0.55)	$ 0.13	$ (0.42)	$ 0.35
Diluted (in usd per share)	$ (0.55)	$ 0.13	$ (0.42)	$ 0.34
Weighted average shares outstanding:
Basic (shares)	80,325	78,318	80,226	78,262
Diluted (shares)	80,325	81,424	80,226	81,437
Comprehensive income (loss):
Net income (loss)	$ (43,833)	$ 10,257	$ (34,091)	$ 27,686
Unrealized gain (loss) on hedge instruments	4,111	(2,246)	(4,747)	(3,519)
Tax provision (benefit) of unrealized gain (loss) on hedge instruments	1,050	(576)	(1,206)	(902)
Comprehensive income (loss)	(40,772)	8,587	(37,632)	25,069
Products
Revenue:
Total net revenue	209,707	357,533	602,548	740,693
Costs applicable to revenue (exclusive of depreciation and amortization):
Total costs applicable to revenue	97,635	145,654	254,005	299,658
Services and plans
Revenue:
Total net revenue	50,300	71,918	127,163	149,973
Costs applicable to revenue (exclusive of depreciation and amortization):
Total costs applicable to revenue	$ 43,145	$ 56,852	$ 105,329	$ 114,817