Note 1 - Summary of Significant Accounting Policies (Details) - Amounts Reclassified Out of Accumulated Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 1 - Summary of Significant Accounting Policies (Details) - Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	$ (4,435)	$ (2,910)	$ 647
Net of tax	11,495	10,227	842
	17,881	15,059	2,091
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]
Unrealized gains and losses on available for sale investment securities	65
Income tax expense	(23)
Net of tax	42
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense	94
Net of tax	(175)
Prior service costs	(257)
Actuarial losses	(12)
	(269)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Note 1 - Summary of Significant Accounting Policies (Details) - Amounts Reclassified Out of Accumulated Other Comprehensive Income [Line Items]
Net of tax	$ (133)