v3.10.0.1

Business Acquisitions - Additional Information (Details) $ in Thousands				3 Months Ended		9 Months Ended
	Jul. 12, 2018 USD ($)	May 31, 2018 USD ($) earn-out_payment	Jan. 09, 2018 USD ($) earn-out_payment	Sep. 29, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 29, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 30, 2017 USD ($)
Business Acquisition [Line Items]
Goodwill				$ 68,441		$ 68,441		$ 60,281
Discrete tax benefit				$ 977	$ 647	$ 2,592	$ 1,503
Town & Country Resources, Inc.
Business Acquisition [Line Items]
Potential consideration transferred			$ 7,000
Cash consideration			$ 5,000
Number of earn-out payments | earn-out_payment			2
First earn-out payment			$ 1,000
Second earn-out payment			1,000
Contingent consideration			1,000
Consideration transferred			6,000
Goodwill			4,800
Proprietary software			$ 1,200
Galore, Inc.
Business Acquisition [Line Items]
Potential consideration transferred		$ 300
Number of earn-out payments | earn-out_payment		2
Proprietary software		$ 300
Trusted Labs, Inc.
Business Acquisition [Line Items]
Potential consideration transferred	$ 8,100
Cash consideration	4,600
First earn-out payment	1,000
Contingent consideration	1,000
Consideration transferred	5,600
Goodwill	3,400
Proprietary software	2,500
Retention payment	2,200
Payment to settle liabilities	300
Working capital liabilities	300
Discrete tax benefit	$ 600
Minimum | Galore, Inc.
Business Acquisition [Line Items]
First earn-out payment		300
Second earn-out payment		700
Maximum | Galore, Inc.
Business Acquisition [Line Items]
First earn-out payment		500
Second earn-out payment		$ 900

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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