Note 10 - Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2012

Retirement Plan [Member]

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

(In thousands)	2012			2011
Change in Benefit Obligation
Obligation at beginning of year	$	706		$	646
Service cost		26			22
Interest cost		29			32
Actuarial loss		8			33
Benefit payments		(28	)		(27	)
Obligation at end of year	$	741		$	706

Schedule of Net Benefit Costs [Table Text Block]

(In thousands)	2012			2011
Service cost	$	26		$	22
Interest cost		29			32
Recognized net actuarial loss		8			2
Net periodic benefit cost	$	63		$	56
Major assumptions:
Discount rate used to determine net period benefit cost		4.39	%		5.55	%
Discount rate used to determine benefit obligation at year end		4.03			4.39

Schedule of Expected Benefit Payments [Table Text Block]

(In thousands)	Supplemental Retirement Plan
2013	$	28
2014		28
2015		28
2016		28
2017		28
2018-2022		326
Total	$	466

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

(In thousands)	2012		2011
Unrecognized net actuarial loss	$	157	$	157
Total	$	157	$	157

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

(In thousands)	Supplemental Retirement Plan
Unrecognized net actuarial loss	$	12
Total	$	12

Postretirement Medical Benefits [Member]

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

(In thousands)	2012			2011
Change in Benefit Obligation
Obligation at beginning of year	$	14,294		$	11,760
Service cost		617			432
Interest cost		608			605
Actuarial loss		674			1,750
Participant contributions		85			86
Benefit payments		(343	)		(339	)
Obligation at end of year	$	15,935		$	14,294

Schedule of Net Benefit Costs [Table Text Block]

(In thousands)	2012			2011
Service cost	$	617		$	432
Interest cost		608			605
Amortization of transition obligation		102			102
Recognized prior service cost		257			257
Amortization of net actuarial loss		56			-
Net periodic benefit cost	$	1,640		$	1,396
Major assumptions:
Discount rate used to determine net periodic benefit cost		4.39	%		5.55	%
Discount rate used to determine benefit obligation as of year end		4.03			4.39
Retiree participation rate (Plan 1)		100.00			100.00
Retiree participation rate (Plan 2)		72.00			72.00

Schedule of Expected Benefit Payments [Table Text Block]

(In thousands)	Postretirement Medical Benefits
2013	$	349
2014		384
2015		402
2016		428
2017		478
2018-2022		3,045
Total	$	5,086

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

(In thousands)	2012		2011
Unrecognized net actuarial loss	$	3,087	$	2,469
Unrecognized transition obligation		-		101
Unrecognized prior service cost		639		896
Total	$	3,726	$	3,466

Schedule of Amounts in Accumulated Other Comprehensive Income (Loss) to be Recognized over Next Fiscal Year [Table Text Block]

(In thousands)	Postretirement Medical Benefits
Unrecognized prior service cost	$	257
Total	$	257

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]

(In thousands)	1% Increase		1% Decrease
Effect on total of service and interest cost components of net periodic postretirement health care benefit cost	$	329	$	(249	)
Effect on accumulated postretirement benefit obligation		3,374		(2,632	)