Note 12 - Pension and Other Postretirement Benefit Plans (Details) - For the Postretirement Plans, the Change in Benefit Obligation and Assets (Postretirement Plans [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Postretirement Plans [Member]
Change in benefit obligation:
Projected benefit obligation, balance	$ 5,927	$ 5,166
Service cost	449	400	313
Interest cost	219	217	207
Actuarial loss (gain)	(943)	211
Benefits paid	(66)	(67)
Projected benefit obligation, balance	5,586	5,927	5,166
Change in plan assets:
Employer contributions	66	67
Benefits paid	(66)	(67)
Accrued pension cost included in other liabilities	$ (5,586)	$ (5,927)