Note 8 - Debt (Details) - Required financial covenants compared to actual amounts (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 29, 2013	Jun. 27, 2013	Sep. 29, 2013	Dec. 31, 2012
Note 8 - Debt (Details) - Required financial covenants compared to actual amounts [Line Items]
Consolidated interest coverage ratio (12-month period)			2.25
Annual capital expenditures limitation (actual year-to-date) (in Dollars)	$ 8,000	$ 7,000		$ 8,000
Scenario, Required [Member]
Note 8 - Debt (Details) - Required financial covenants compared to actual amounts [Line Items]
Consolidated leverage ratio (12-month period)			3.50
Consolidated interest coverage ratio (12-month period)			2.25
Annual capital expenditures limitation (actual year-to-date) (in Dollars)			8,000
Scenario, Actual [Member]
Note 8 - Debt (Details) - Required financial covenants compared to actual amounts [Line Items]
Consolidated leverage ratio (12-month period)			1.10
Consolidated interest coverage ratio (12-month period)			5.80
Annual capital expenditures limitation (actual year-to-date) (in Dollars)			$ 5,214