Note 2 - Reclassifications and Restatement (Detail) - Reclassifications and Restatement Summary (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012	Dec. 29, 2012
Impairment and equity in net loss of unconsolidated affiliate	$ (10,678)	$ (525)	$ (4,000)
Income taxes	3,178	7,212
Net income	14,794	17,563
Basic Earnings per share (in Dollars per share)	$ 0.67	$ 0.81
Diluted Earnings per share (in Dollars per share)	$ 0.66	$ 0.80
As Previously Reported [Member]
Accrued taxes		1,474
Income before income taxes		25,300
Income taxes		7,411
Net income		17,889
Basic Earnings per share (in Dollars per share)		$ 0.83
Diluted Earnings per share (in Dollars per share)		$ 0.81
Comprehensive income		27,031
Adjustment [Member]
Impairment and equity in net loss of unconsolidated affiliate		525
Accrued taxes		(199)
Income before income taxes		(525)
Income taxes		(199)
Net income		(326)
Basic Earnings per share (in Dollars per share)		$ (0.02)
Diluted Earnings per share (in Dollars per share)		$ (0.01)
Comprehensive income		(326)
As Restated [Member]
Impairment and equity in net loss of unconsolidated affiliate		525
Accrued taxes		1,275
Income before income taxes		24,775
Income taxes		7,212
Net income		17,563
Basic Earnings per share (in Dollars per share)		$ 0.81
Diluted Earnings per share (in Dollars per share)		$ 0.80
Comprehensive income		$ 26,705