Note 4 - Periodic Pension Expense (Details) - Net Periodic Benefit Cost (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Periodic Benefit Cost [Abstract]
Service cost - benefits earned during the period	$ 20,000	$ 32,000	$ 60,000	$ 331,000
Interest cost on projected benefit obligation	250,000	252,000	751,000	773,000
Expected return on plan assets	(349,000)	(332,000)	(1,046,000)	(998,000)
Amortization of prior service cost		3,000		9,000
Recognized actuarial loss	81,000	185,000	243,000	758,000
Settlement loss	60,000	208,000	60,000	457,000
Net periodic pension cost	$ 62,000	$ 348,000	$ 68,000	$ 1,330,000