Note 14 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Year Ended December 31,
	201 6			201 5
Accumulated benefit obligation at end of period	$	65,956		$	63,894
Change in projected benefit obligation
Projected benefit obligation at beginning of period	$	63,894		$	68,376
Interest cost		2,747			2,681
Net actuarial loss (gain)		1,363			(5,254	)
Benefits paid		(2,048	)		(1,909	)
Projected benefit obligation at end of period	$	65,956		$	63,894
Change in plan assets
Fair value of plan assets at beginning of period	$	43,985		$	45,452
Actual return (loss) on plan assets		3,820			(384	)
Company contributions		731			826
Benefits paid		(2,048	)		(1,909	)
Fair value of plan assets at end of period	$	46,488		$	43,985
Funded status: accrued pension liability included in other long-term liabilities	$	(19,468	)	$	(19,909	)
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss, net of tax	$	(11,040	)	$	(11,362	)

Schedule of Net Benefit Costs [Table Text Block]

	Year E nded December 31,
	201 6			201 5			201 4
Interest cost	$	2,747		$	2,681		$	2,591
Expected return on plan assets		(2,868	)		(3,041	)		(2,933	)
Amortization of net loss		941			1,228			106
Net periodic pension (benefit) cost	$	820		$	868		$	(236	)

Schedule of Assumptions Used [Table Text Block]

	December 31,
	201 6			201 5
Discount rate – salaried pension plan		4.14	%		4.36	%
Discount rate – hourly pension plan		4.16	%		4.39	%
Rate of compensation increase (1)		n/a			n/a

Schedule of Allocation of Plan Assets [Table Text Block]

				December 31, 201 6					December 31, 201 5
Asset Category	Target			Dollars		%			Dollars		%
Fixed Income		20	%	$	7,812		17	%	$	8,571		19	%
Domestic equity		49	%		19,615		42	%		20,479		47	%
International equity		21	%		13,466		29	%		9,687		22	%
Real estate		10	%		5,595		12	%		5,248		12	%
Total		100	%	$	46,488		100	%	$	43,985		100	%

Schedule of Fair Value of Plan Assets [Table Text Block]

	Total		Quoted Prices in Active Markets for Identical A sset (L evel 1)		Significant Observable I nputs (L evel 2)		Significant U nobservable I nputs (L evel 3)
Mutual fund s	$	37,860	$	37,860	$	–	$	–
Other investments		8,628		–		–		8,628
Total	$	46,488	$	37,860	$	–	$	8,628

	Total		Quoted Prices in Active Markets for Identical A sset (L evel 1)		Significant O b servable I nputs (L evel 2)		Significant Unobservable I nputs (L evel 3)
Mutual fund s	$	40,310	$	40,310	$	–	$	–
Other investment s		3,675		–		–		3,675
Total	$	43,985	$	40,310	$	–	$	3,675

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

	Year Ended December 31,
	2016		2015
Balance at beginning of period	$	3,675	$	3,185
Purchases		4,400		408
Realized gains		553		82
Balance at end of period	$	8,628	$	3,675

Schedule of Expected Benefit Payments [Table Text Block]

201 7	$	2,258
201 8		2,354
201 9		2,430
20 20		2,556
202 1		2,692
2022– 2026		16,021

Net periodic Benefit Costs [Member]

Notes Tables

Schedule of Assumptions Used [Table Text Block]

	Y ear E nded December 31,
	201 6			201 5			201 4
Discount rate		4.39	%		3.99	%		5.01	%
Expected long-term rate of return on plan assets		6.62	%		6.75	%		6.88	%
Rate of compensation increase (1)		n/a			n/a			n/a