Note 2 - Multi-Employer Pension and Health Care Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Pension And Health Care Plans Disclosure [Text Block]
Multiemployer Plan, Period Contributions	$ 5,325,000	$ 5,111,000	$ 10,676,000	$ 10,266,000
Defined Contribution Plan, Minimum Age	18		18
Defined Contribution Plan, Minimum Months of Service	1		1
Defined Contribution Plan, Maximum Contribution of Income, Percent	100.00%		100.00%
Defined Contribution Plan, Maximum Contribution of Income, Amount	17,500		17,500
Defined Contribution Plan, Maximum Contribution of Income, Catch Up Amount	5,500		5,500
Defined Contribution Plan, Minimum Catch Up Age	50		50
Defined Contribution Plan, Minimum Years of Service	1		1
Defined Contribution Plan, Contributions Accrued	$ 132,000	$ 90,000	$ 273,000	$ 186,000