Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	$ 10,805,000
Other comprehensive income (loss) before reclassifications	(212,000)
Amounts reclassified from accumulated other comprehensive income (loss)	328,000
Net other comprehensive income (loss)	116,000	1,033,000	(3,457,000)
Balance, end of period	10,921,000	10,805,000
Accumulated other comprehensive income (loss), tax effect related to defined benefit pension plan adjustments	(300,000)	900,000
Accumulated Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	20,096,000
Other comprehensive income (loss) before reclassifications	(815,000)
Amounts reclassified from accumulated other comprehensive income (loss)	0
Net other comprehensive income (loss)	(815,000)	80,000	2,380,000
Balance, end of period	19,281,000	20,096,000
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, beginning of period	(9,291,000)
Other comprehensive income (loss) before reclassifications	603,000
Amounts reclassified from accumulated other comprehensive income (loss)	328,000
Net other comprehensive income (loss)	931,000	953,000	(5,837,000)
Balance, end of period	$ (8,360,000)	$ (9,291,000)