Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis

The Company’s assets and liabilities measured at fair value on a recurring and nonrecurring basis as of December 31, 2016 and January 2, 2016, aggregated by the level in the fair value hierarchy within which those measurements fall, are as follows (in thousands):

Description	Level 1		Level 2		Level 3		Total
Recurring fair value measurements:
Money market funds
Balance at December 31, 2016	$	31,600	$	—	$	—	$	31,600
Balance at January 2, 2016	$	113,700	$	—	$	—	$	113,700
Contingent consideration payable for business    acquisitions
Balance at December 31, 2016	$	—	$	—	$	9,775	$	9,775
Balance at January 2, 2016	$	—	$	—	$	—	$	—
Nonrecurring fair value measurements:
Assets held for sale
Balance at December 31, 2016	$	—	$	—	$	—	$	—
Balance at January 2, 2016	$	—	$	—	$	2,600	$	2,600