Organization and Significant Accounting Policies - Assets or Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 28, 2018	Dec. 29, 2017
Forward Contracts [Member]
Other assets:
Assets measured at fair value	$ 411	$ 1,302
Interest Rate Swap [Member]
Other assets:
Assets measured at fair value		30
Contingent Earn-out Liability [Member]
Other non-current liabilities:
Liabilities measured at fair value	4,163
Stock Purchase Obligation [Member]
Other non-current liabilities:
Liabilities measured at fair value	8,552
Significant Other Observable Inputs (Level 2) [Member] | Forward Contracts [Member]
Other assets:
Assets measured at fair value	411	1,302
Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap [Member]
Other assets:
Assets measured at fair value		$ 30
Significant Unobservable Inputs (Level 3) [Member] | Contingent Earn-out Liability [Member]
Other non-current liabilities:
Liabilities measured at fair value	4,163
Significant Unobservable Inputs (Level 3) [Member] | Stock Purchase Obligation [Member]
Other non-current liabilities:
Liabilities measured at fair value	$ 8,552