Note 8 - Guarantees and Obligations (Tables)

9 Months Ended

Sep. 26, 2015

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 26,			September 27,			September 26,			September 27,
	2015			2014			2015			2014
Balance at beginning of period	$	5,212		$	4,244		$	5,848		$	4,673
Warranty expense accruals		1,867			1,590			5,062			3,832
Warranty payments		(1,905	)		(1,152	)		(5,736	)		(3,823	)
Balance at end of period	$	5,174		$	4,682		$	5,174		$	4,682