Goodwill and Intangible Assets Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	1 Months Ended
	Sep. 30, 2015	Jan. 02, 2016		Jan. 03, 2015
Definite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 21,365		$ 7,745
Accumulated Amortization		3,463		2,118
Developed Technologies [Member]
Definite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		18,851	[1]	5,231
Accumulated Amortization		2,342		1,342
Customer Relationships [Member]
Definite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		2,413		2,413
Accumulated Amortization		1,020		675
Trade name/trademarks [Member]
Definite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		101		101
Accumulated Amortization		$ 101		$ 101
BAM Labs, Inc. [Member] | Developed Technologies [Member]
Definite-Lived Intangible Assets [Line Items]
BAM Labs, Inc. purchase	$ 13,600

[1] In September 2015, in connection with the acquisition of BAM Labs, Inc. (now operating as SleepIQ LABS), we acquired $13.6 million of definite-lived intangible assets consisting of developed technologies.