Note 7 - Retirement and Postretirement Plans (Details) - Components of Net Pension Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension Plan, Defined Benefit [Member]
Note 7 - Retirement and Postretirement Plans (Details) - Components of Net Pension Cost [Line Items]
Service cost	$ 42	$ 42
Interest cost	5,506	143
Expected return on plan assets	(6,671)	(156)
Amortization of net loss		9
Net periodic benefit cost (income)	(1,123)	38
Other Postretirement Benefit Plan, Defined Benefit [Member]
Note 7 - Retirement and Postretirement Plans (Details) - Components of Net Pension Cost [Line Items]
Service cost	22
Interest cost	261
Net periodic benefit cost (income)	$ 283