Restructuring and Related Charges (Details) - Restructuring accrual activity (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Restructuring and Related Charges (Details) - Restructuring accrual activity [Line Items]
Accrual January 1, 2012		$ 606,000	$ 606,000
Charges (credits) to expense	743,000	395,000	418,000	499,000
Cash Payments	(818,000)	(269,000)
Accrual	657,000	732,000		606,000
Severance And Other Termination Costs [Member]
Restructuring and Related Charges (Details) - Restructuring accrual activity [Line Items]
Accrual January 1, 2012		57,000	57,000
Charges (credits) to expense	743,000	17,000
Cash Payments	(574,000)	(74,000)
Accrual	169,000
Other Cost [Member]
Restructuring and Related Charges (Details) - Restructuring accrual activity [Line Items]
Accrual January 1, 2012		50,000	50,000
Charges (credits) to expense		(40,000)
Cash Payments		(10,000)
Lease Obligations [Member]
Restructuring and Related Charges (Details) - Restructuring accrual activity [Line Items]
Accrual January 1, 2012		499,000	499,000
Charges (credits) to expense		418,000
Cash Payments	(244,000)	(185,000)
Accrual	$ 488,000	$ 732,000