Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended
	Apr. 03, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 5,165,000
Other comprehensive income before reclassifications	221,000
Amounts reclassified from accumulated other comprehensive income	122,000
Net other comprehensive income	343,000
Balance, end of period	5,508,000
Accumulated Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	19,557,000
Other comprehensive income before reclassifications	221,000
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income	221,000
Balance, end of period	19,778,000
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(14,392,000)
Other comprehensive income before reclassifications	0
Amounts reclassified from accumulated other comprehensive income	122,000
Net other comprehensive income	122,000
Balance, end of period	(14,270,000)
Accumulated tax effect	$ 300,000	$ (300,000)