Note 9 - Benefit Plans (Details) - Net Periodic Benefit Cost (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 9 - Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Service cost - benefits earned during the period	$ 364,000	$ 595,000
Interest cost on projected benefit obligation	1,016,000	1,023,000
Expected return on plan assets	(1,325,000)	(1,270,000)
Amortization of prior service cost	13,000	17,000
Recognized actuarial loss	(2,810,000)	3,469,000
Settlement loss	476,000
Net periodic pension cost after settlements	1,482,000	1,322,000
Recognized Actuarial Loss [Member]
Note 9 - Benefit Plans (Details) - Net Periodic Benefit Cost [Line Items]
Recognized actuarial loss	$ 938,000	$ 957,000