Long-Term Debt and Credit Arrangements (Senior Indebtedness) (Details) (Revolving Credit Facility [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2012 Rate Y
Line of Credit Facility [Line Items]
Term Of Line Of Credit (in years)	5
Maximum Borrowing Capacity	$ 90,000
Commitment Fee Percentage	0.375%
Minimum Borrowing Capacity for No Financial Covenants	10,000
Remaining Borrowing Capacity	$ 20,217
Minimum [Member]
Line of Credit Facility [Line Items]
Fixed Charge Coverage Ratio	1.1
Alternative [Member] | Minimum [Member] | Libor [Member]
Line of Credit Facility [Line Items]
Basis Spread on Variable Rate	2.00%
Alternative [Member] | Maximum [Member] | Libor [Member]
Line of Credit Facility [Line Items]
Basis Spread on Variable Rate	2.25%
Alternative B [Member] | Federal Funds [Member]
Line of Credit Facility [Line Items]
Basis Spread on Variable Rate	0.50%
Alternative B [Member] | Minimum [Member] | Daily Libor [Member]
Line of Credit Facility [Line Items]
Basis Spread on Variable Rate	1.00%
Alternative B [Member] | Maximum [Member] | Daily Libor [Member]
Line of Credit Facility [Line Items]
Basis Spread on Variable Rate	1.50%