Note 7 - Fair Value of Assets and Liabilities (Tables)

3 Months Ended

Mar. 29, 2014

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		$	13,686	$	—	$	—	$	13,686
Total		$	13,686	$	—	$	—	$	13,686

	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