Note 4 - Periodic Pension Expense (Details) - Net Periodic Benefit Cost (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Periodic Benefit Cost [Abstract]
Service cost - benefits earned during the period	$ 20,000	$ 150,000	$ 40,000	$ 299,000
Interest cost on projected benefit obligation	251,000	261,000	501,000	521,000
Expected return on plan assets	(349,000)	(333,000)	(697,000)	(666,000)
Amortization of prior service cost		3,000		6,000
Recognized actuarial loss	81,000	286,000	162,000	573,000
Settlement loss		249,000		249,000
Net periodic pension cost	$ 3,000	$ 616,000	$ 6,000	$ 982,000