SCHEDULE II Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013		Dec. 29, 2012		Dec. 31, 2011
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 2,306		$ 2,308		$ 2,185
Provision charged to expense (income)	374		(14)		1,249
Accounts recovered	109		30		92
Accounts written off/Activity charged to reserve	(152)		(56)		(1,213)
Currency translation	52		38		(5)
Balance at end of year	2,689		2,306		2,308
Accrued Restructuring Costs [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	254	[1]	762	[1]	433	[1]
Provision charged to expense (income)	1,843	[1]	(75)	[1]	408	[1]
Accounts written off/Activity charged to reserve	(1,394)	[1]	(438)	[1]	(94)	[1]
Currency translation	(153)	[1]	5	[1]	15	[1]
Balance at end of year	$ 550	[1]	$ 254	[1]	$ 762	[1]

[1] The nature of the activity in this account is described in Note 8 to the consolidated financial statements.