Note 17 - Other Comprehensive Income (Details) - Components of other comprehensive income (loss) and other related tax effects (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of other comprehensive income (loss) and other related tax effects [Abstract]
Net unrealized gains (losses) arising during the year, before tax	$ (17,855)	$ 5,557	$ 19,282
Net unrealized gains (losses) arising during the year, tax effect	7,507	(2,337)	(8,108)
Net unrealized gains (losses) arising during the year, net of tax	(10,348)	3,220	11,174
Net unrealized gains (losses) arising during the year, before tax	(17,855)	5,557	19,282
Net unrealized gains (losses) arising during the year, tax effect	7,507	(2,337)	(8,108)
Net unrealized gains (losses) arising during the year, net of tax	(10,348)	3,220	11,174
Post-retirement benefit obligation, before tax	61	61	61
Post-retirement benefit obligation, tax effect	(25)	(25)	(25)
Post-retirement benefit obligation, net of tax	36	36	36
Other comprehensive loss (income), before tax	(17,794)	5,618	19,343
Other comprehensive loss (income), tax effect	7,482	(2,362)	(8,133)
Other comprehensive loss (income), net of tax	$ (10,312)	$ 3,256	$ 11,210