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

6 Months Ended

Jun. 28, 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	$	15,787	$	—	$	—	$	15,787
Total	$	15,787	$	—	$	—	$	15,787

	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