Note 10 - Retirement and Postretirement Plans (Details) - Summary of Accumulated Other Comprehensive Income (Loss) Related to Pension and Other Benefits (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension Plan, Defined Benefit [Member]
Note 10 - Retirement and Postretirement Plans (Details) - Summary of Accumulated Other Comprehensive Income (Loss) Related to Pension and Other Benefits [Line Items]
Balance	$ 8,721	$ (1,668)	$ (850)	$ 672
Actuarial gain (loss)	10,389	(818)	(1,522)
Other Pension Plan, Postretirement or Supplemental Plans, Defined Benefit [Member]
Note 10 - Retirement and Postretirement Plans (Details) - Summary of Accumulated Other Comprehensive Income (Loss) Related to Pension and Other Benefits [Line Items]
Balance	174
Actuarial gain (loss)	$ 174