Note 7 - Investments Change in Unrealized Gains (Losses) Recorded in AOCI (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Change In Unrealized Gains (Losses) Recorded In AOCI [Line Items]
Unrealized holding gains (losses) arising during the period, net of tax	$ 14,132	$ 7,400	$ 41,164
Less: Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, net of tax	(9,272)	31,928	3,781
Net unrealized gain on investments, net of tax	4,860	39,328	44,945
Fixed Maturities [Member]
Change In Unrealized Gains (Losses) Recorded In AOCI [Line Items]
Unrealized holding gains (losses) arising during the period, net of tax	4,415	11,328	23,806
Less: Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, net of tax	5,750	(34,697)	(4,980)
Net unrealized gain on investments, net of tax	(1,335)	46,025	28,786
Equity Securities [Member]
Change In Unrealized Gains (Losses) Recorded In AOCI [Line Items]
Unrealized holding gains (losses) arising during the period, net of tax	9,717	(3,928)	15,080
Less: Reclassification adjustment for unrealized gains or losses realized upon the sale of securities, net of tax	3,522	2,769	1,242
Net unrealized gain on investments, net of tax	$ 6,195	$ (6,697)	$ 13,838