Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of assets and liabilities measured at fair value on a recurring basis

The following tables provide information regarding the Company’s assets and liabilities measured at fair value on a recurring basis at December 30, 2017, and December 31, 2016. The fair value of cash and cash equivalents, accounts receivable, other current assets, accounts payable and accrued expenses and other liabilities approximates their carrying value, due to their short-term nature.

	December 30, 2017
					Significant Other		Significant
			Quoted  Market		Observable		Unobservable
	Total		Prices (Level 1)		Inputs (Level 2)		Inputs (Level 3)
Liabilities
Contingent consideration	$	33,882	$	—	$	—	$	33,882
Total	$	33,882	$	—	$	—	$	33,882

	December 31, 2016
	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Assets
Level 1:
Equity securities	$	—	$	31	$	—		$	31
Mutual funds		1,483		—		(159	)		1,324
Subtotal		1,483		31		(159	)		1,355
Level 2:
Corporate fixed income		4,288		9		(408	)		3,889
Municipal bonds		1,675		—		(94	)		1,581
Subtotal		5,963		9		(502	)		5,470
Total	$	7,446	$	40	$	(661	)	$	6,825
Liabilities
Level 3:
Contingent consideration								$	35,077
Total								$	35,077

Summary of changes in estimated fair value of contingent consideration

  A summary of changes in the estimated fair value of contingent consideration at December 30, 2017 is as follows:

Balance at December 31, 2016	$	35,077
Measurement period adjustment		6,314
Change in estimated fair value		8,299
Accretion in value		1,177
Payment on liability		(16,985	)
Balance at December 30, 2017	$	33,882