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Note 14 - Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

		Year Ended December 31,
		201 7				201 6
Accumulated benefit obligation at end of period		$	72,631			$	65,956
Change in projected benefit obligation
Projected benefit obligation at beginning of period		$	65,956			$	63,894
Interest cost			2,688				2,747
Net actuarial loss			6,170				1,363
Benefits paid			(2,183	)			(2,048	)
Projected benefit obligation at end of period		$	72,631			$	65,956
Change in plan assets
Fair value of plan assets at beginning of period		$	46,488			$	43,985
Actual return  on plan assets			8,382				3,820
Company contributions			5,327				731
Benefits paid			(2,183	)			(2,048	)
Fair value of plan assets at end of period		$	58,014			$	46,488
Funded status: accrued pension liability included in other long-term liabilities		$	(14,617	)		$	(19,468	)
Amounts recognized in accumulated other comprehensive loss
Net a ctuarial loss, net of tax		$	(10,978	)		$	(11,040	)

Schedule of Net Benefit Costs [Table Text Block]

		Year E nded December 31,
		201 7				201 6				201 5
Interest cost		$	2,688			$	2,747			$	2,681
Expected return on plan assets			(3,011	)			(2,868	)			(3,041	)
Amortization of net loss			883				941				1,228
Net periodic pension  cost		$	560			$	820			$	868

Schedule of Assumptions Used [Table Text Block]

		December 31,
		201 7				201 6
Discount rate – salaried pension plan			3.60	%			4.14	%
Discount rate – hourly pension plan			3.62	%			4.16	%
Rate of compensation increase (1)			n/a				n/a

Schedule of Allocation of Plan Assets [Table Text Block]

		Target Allocation						December 31, 201 7								December 31, 201 6
Asset Category		Minimum			Maximum			Dollars				%				Dollars				%
Fixed Income		15.0	%		25.0	%		$	10,637				18	%		$	7,812				17	%
Domestic equity		36.5	%		61.5	%			25,151				43	%			19,615				42	%
International equity		17.0	%		25.0	%			16,093				28	%			13,466				29	%
Real estate		7.0	%		15.0	%			6,133				11	%			5,595				12	%
Total								$	58,014				100	%		$	46,488				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 Unobservable I nputs (L evel 3)
Mutual fund s		$	48,314			$	48,314			$	–			$	–
Other investments			9,700				–				–				9,700
Total		$	58,014			$	48,314			$	–			$	9,700

		Total				Quoted Prices in Active Markets for Identical A sset (L evel 1)				Significant O b servable Inputs (L evel 2)				Significant Unobservable I nputs (L evel 3)
Mutual fund s		$	37,860			$	37,860			$	–			$	–
Other investment s			8,628				–				–				8,628
Total		$	46,488			$	37,860			$	–			$	8,628

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

		Year Ended December 31,
		201 7				201 6
Balance at beginning of period		$	8,628			$	3,675
Purchases			-				4,400
Realized gains			1,072				553
Balance at end of period		$	9,700			$	8,628

Schedule of Expected Benefit Payments [Table Text Block]

201 8			$	2,445
201 9				2,502
20 20				2,622
20 21				2,760
202 2				2,932
2023 – 2027				16,989

Net periodic Benefit Costs [Member]

Notes Tables

Schedule of Assumptions Used [Table Text Block]

		Y ear E nded December 31,
		201 7				201 6				201 5
Discount rate			4.14	%			4.39	%			3.99	%
Expected long-term rate of return on plan assets			6.58	%			6.62	%			6.75	%
Rate of compensation increase (1)			n/a				n/a				n/a

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