Note 15 - Retirement Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Net Benefit Costs [Table Text Block]

	At December 31,
	2012			2011			2010
	(In thousands)
Service cost	$	(340	)	$	(35	)	$	(371	)
Interest cost		143			175			193
Amortization of unrecognized transition obligation		61			61			61
Net periodic (benefit) cost		(136	)		201			(117	)

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

Amortization of unrecognized transition obligation, net of tax		(36	)		(36	)		(36	)
Total recognized in net periodic (benefit) cost and accumulated other comprehensive income	$	(172	)	$	165		$	(153	)

Schedule of Accumulated Benefit Obligations in Excess of Fair Value of Plan Assets [Table Text Block]

	For the years ended December 31,
	2012			2011			2010
Change in benefit obligation	(In thousands)
Benefit obligation at beginning of year	$	3,117		$	3,178		$	3,519
Service cost		(340	)		(35	)		(371	)
Interest cost		143			175			193
Benefits paid		(165	)		(201	)		(163	)
Benefit obligation at end of year	$	2,755		$	3,117		$	3,178
Accumulated post-retirement benefit obligation attributable to:
Retirees	$	1,654		$	2,363		$	1,990
Fully eligible participants		856			537			951
Other		245			217			237
Total	$	2,755		$	3,117		$	3,178
Fair value of plan assets	$	—		$	—		$	—
Accumulated post-retirement benefit obligation in excess of plan assets	$	2,755		$	3,117		$	3,178

Schedule of Assumptions Used [Table Text Block]

	At December 31,
	2012			2011			2010
Weighted-average assumptions used to determine benefit obligations as of December 31
Discount rate		4.00	%		4.60	%		5.50	%
Weighted-average assumptions used to determine net periodic benefit cost as of December 31
Discount rate		4.60	%		5.50	%		5.50	%

Schedule of Expected Benefit Payments [Table Text Block]

	Estimated future benefit payments (In thousands)
2013	$	170
2014		171
2015		175
2016		180
2017		187
Years 2018-2022		882