Note 4 - Periodic Pension Expense (Details) - Net Periodic Benefit Cost (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net Periodic Benefit Cost [Abstract]
Service cost - benefits earned during the period	$ 20,000	$ 149,000
Interest cost on projected benefit obligation	250,000	261,000
Expected return on plan assets	(348,000)	(333,000)
Amortization of prior service cost		3,000
Recognized actuarial loss	81,000	287,000
Net periodic pension cost	$ 3,000	$ 367,000