Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014		Dec. 28, 2013
Fair Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long-term debt obligations	$ 42,290		$ 38,010
Carrying Value [Member]
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Long-term debt obligations	42,290		38,010
Recurring [Member]
Assets [Abstract]
Money market funds and time deposits	15,665		17,090
Banker's acceptance drafts	6,947	[1]	10,765	[1]
Forward currency-exchange contracts	44		97
Liabilities [Abstract]
Forward currency-exchange contracts	8		23
Interest rate swap agreement	690		773
ContingentConsideration	1,377	[2]
Recurring [Member] | Level 1 [Member]
Assets [Abstract]
Money market funds and time deposits	15,665		17,090
Banker's acceptance drafts	0	[1]	0	[1]
Forward currency-exchange contracts	0		0
Liabilities [Abstract]
Forward currency-exchange contracts	0		0
Interest rate swap agreement	0		0
ContingentConsideration	0	[2]
Recurring [Member] | Level 2 [Member]
Assets [Abstract]
Money market funds and time deposits	0		0
Banker's acceptance drafts	6,947	[1]	10,765	[1]
Forward currency-exchange contracts	44		97
Liabilities [Abstract]
Forward currency-exchange contracts	8		23
Interest rate swap agreement	690		773
ContingentConsideration	0	[2]
Recurring [Member] | Level 3 [Member]
Assets [Abstract]
Money market funds and time deposits	0		0
Banker's acceptance drafts	0	[1]	0	[1]
Forward currency-exchange contracts	0		0
Liabilities [Abstract]
Forward currency-exchange contracts	0		0
Interest rate swap agreement	0		0
ContingentConsideration	$ 1,377	[2]

[1] Included in accounts receivable in the accompanying condensed consolidated balance sheet.

[2] Included in other current liabilities in the accompanying condensed consolidated balance sheet.