Note 13 - Accumulated Other Comprehensive Income (Details) - Changes in Accumulated Other Comprehensive Income by Component (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	$ (11,375)
Other comprehensive income before reclassifications, net of tax	11,873
Amounts reclassified from accumulated other comprehensive income, net of tax	151
Net current period other comprehensive income, net of tax	12,024
Ending balance, net of tax	649
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	(8,522)
Other comprehensive income before reclassifications, net of tax	11,873
Net current period other comprehensive income, net of tax	11,873
Ending balance, net of tax	3,351
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance, net of tax	(2,853)
Amounts reclassified from accumulated other comprehensive income, net of tax	151
Net current period other comprehensive income, net of tax	151
Ending balance, net of tax	$ (2,702)