Organization and Significant Accounting Policies - Assets or Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Jun. 28, 2019	Dec. 28, 2018
Pension Obligation [Member]
Other liabilities:
Liabilities measured at fair value	$ 3,293	$ 3,531
Contingent Earn-out Liability [Member]
Other liabilities:
Liabilities measured at fair value	3,870	3,924
Forward Contracts [Member]
Other assets:
Assets measured at fair value	188	240
Purchase Obligation [Member]
Other liabilities:
Liabilities measured at fair value	8,500	8,500
Significant Other Observable Inputs (Level 2) [Member] | Forward Contracts [Member]
Other assets:
Assets measured at fair value	188	240
Significant Unobservable Inputs (Level 3) [Member] | Pension Obligation [Member]
Other liabilities:
Liabilities measured at fair value	3,293	3,531
Significant Unobservable Inputs (Level 3) [Member] | Contingent Earn-out Liability [Member]
Other liabilities:
Liabilities measured at fair value	3,870	3,924
Significant Unobservable Inputs (Level 3) [Member] | Purchase Obligation [Member]
Other liabilities:
Liabilities measured at fair value	$ 8,500	$ 8,500