Note 6 - Employee Benefit Plans (Tables)

12 Months Ended

Dec. 26, 2015

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

(in thousands)	2015			2014			2013
Service cost	$	856		$	749		$	841
Interest cost		311			491			398
Expected return on assets		(193	)		(343	)		(267	)
Settlements		235			-			-
Net periodic costs	$	1,209		$	897		$	972

Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan [Table Text Block]

(in thousands)	2015			2014
Change in projected benefit obligation:
Benefit obligation at beginning of year	$	(26,027	)	$	(23,850	)
Service cost		(856	)		(749	)
Interest cost		(311	)		(491	)
Actuarial gain (loss)		(660	)		(3,649	)
Participant contributions		(672	)		(728	)
Benefits paid		296			998
Plan change		558			-
Settlements		2,199			-
Foreign currency exchange adjustment		(10	)		2,442
Benefit obligation at end of year		(25,483	)		(26,027	)
Change in plan assets:
Fair value of plan assets at beginning of year		15,603			16,083
Return on assets, net of actuarial loss		277			652
Employer contributions		672			728
Participant contributions		672			728
Benefits paid		(296	)		(998	)
Settlements		(2,199	)		-
Foreign currency exchange adjustment		(13	)		(1,590	)
Fair value of plan assets at end of year		14,716			15,603
Net liability at end of year	$	(10,767	)	$	(10,424	)

Schedule of Assumptions Used [Table Text Block]

	2015			2014
Discount rate		1.0	%		1.3	%
Compensation increase		1.8	%		1.8	%

	2015			2014			2013
Discount rate		1.3	%		2.3	%		1.8	%
Rate of return on Assets		1.3	%		2.3	%		1.8	%
Compensation increase		1.8	%		2.0	%		2.0	%

Schedule of Net Funded Status [Table Text Block]

(in thousands)	2015			2014
Accumulated benefit obligation at beginning of year	$	2,428		$	2,021
Service cost		-			13
Interest cost		90			91
Actuarial loss		187			370
Benefits paid		(56	)		(67	)
Accumulated benefit obligation at end of year		2,649			2,428
Plan assets at end of year		-			-
Funded status	$	(2,649	)	$	(2,428	)

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Shares			Ex. Price		Shares			Ex. Price		Shares			Ex. Price
Outstanding, beginning of year		2,435		$	11.67		3,086		$	11.93		3,113		$	12.62
Granted		10		$	10.98		10		$	12.58		470		$	9.83
Exercised		(175	)	$	8.65		(237	)	$	8.43		(117	)	$	7.55
Cancelled		(305	)	$	16.07		(424	)	$	15.37		(380	)	$	16.37
Outstanding, end of year		1,965		$	11.25		2,435		$	11.67		3,086		$	11.93
Options exercisable at year end		1,673		$	11.47		1,901		$	12.08		2,195		$	12.46

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Options Outstanding						Options Exercisable
					Approximate
					Wt. Avg.
Range of			Number		Remaining		Wt. Avg.		Number		Wt. Avg.
Exercise Prices			Outstanding		Life (Years)		Ex. Price		Exercisable		Ex. Price
$7.32	-	$10.58		1,182		5.2	$	8.82		922	$	8.54
$10.59	-	$15.50		498		4.2	$	14.06		466	$	14.26
$15.51	-	$20.73		285		1.7	$	16.44		285	$	16.44
				1,965		4.4	$	11.25		1,673	$	11.47

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		1,026		$	9.54		887		$	9.46		615		$	10.54
Granted		482		$	10.54		497		$	10.07		531		$	8.80
Released		(339	)	$	9.63		(315	)	$	10.16		(223	)	$	10.86
Cancelled		(91	)	$	9.82		(43	)	$	9.41		(36	)	$	9.86
Outstanding, end of year		1,078		$	9.93		1,026		$	9.54		887		$	9.46

Schedule of Nonvested Performance-based Units Activity [Table Text Block]

	2015					2014					2013
				Wt. Avg.					Wt. Avg.					Wt. Avg.
(in thousands, except per share data)	Units			Fair Value		Units			Fair Value		Units			Fair Value
Outstanding, beginning of year		334		$	10.49		238		$	9.32		122		$	9.89
Granted		156		$	10.69		208		$	11.34		158		$	9.03
Released		(38	)	$	9.52		(38	)	$	9.52		(26	)	$	9.89
Cancelled		(76	)	$	9.86		(74	)	$	9.59		(16	)	$	9.89
Outstanding, end of year		376		$	10.80		334		$	10.49		238		$	9.32

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

Employee Stock Purchase Plan	2015			2014			2013
Dividend yield		2.2	%		2.4	%		2.6	%
Expected volatility		35.3	%		35.3	%		38.4	%
Risk-free interest rate		0.1	%		0.1	%		0.1	%
Expected term (years)		0.5			0.5			0.5
Weighted-average grant date fair value per share	$	2.71		$	2.52		$	2.32

Employee Stock Options	2015			2014			2013
Dividend yield		2.1	%		2.0	%		2.6	%
Expected volatility		39.1	%		42.5	%		44.9	%
Risk-free interest rate		1.6	%		1.9	%		1.1	%
Expected term (years)		5.9			5.9			6.4
Weighted-average grant date fair value per share	$	3.46		$	4.39		$	3.37

Restricted Stock Units	2015			2014			2013
Dividend yield		2.1	%		2.2	%		2.5	%

Performance Stock Units	2015			2014			2013
Dividend yield		2.1	%		2.2	%		2.5	%

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

(in thousands)	2015			2014			2013
Cost of sales	$	566		$	491		$	390
Research and development		1,092			1,858			1,623
Selling, general and administrative		5,097			4,039			3,098
Share-based compensation of continuing operations		6,755			6,388			5,111
Discontinued operations		138			388			357
Income tax benefit		(249	)		(204	)		-
Total share-based compensation, net of tax	$	6,644		$	6,572		$	5,468