Note 9 - Fair Value of Assets and Liabilities (Tables)

12 Months Ended

Dec. 28, 2013

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Investment in Polytronics	$	12,286	$	—	$	—	$	12,286
Total	$	12,286	$	—	$	—	$	12,286

	Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Investment in Polytronics	$	10,327	$	—	$	—	$	10,327
Investment in unconsolidated affiliate		—		—		8,666		8,666
Total	$	10,327	$	—	$	8,666	$	18,993