Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Fixed maturities, held-to-maturity securities, fair value	$ 1,120	$ 1,681
Fixed maturities, available-for-sale securities, amortized cost	2,724,100	2,657,800
Fixed maturities, trading securities, amortized cost	8,480	12,645
Equity securities, available-for-sale securities, amortized cost	70,951	66,892
Equity securities, trading securities, amortized cost	2,335	1,772
Allowance for doubtful accounts	910	866
Property and equipment accumulated depreciation	$ 35,888	$ 34,093
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	25,401,314	25,227,463
Common stock, shares outstanding	25,401,314	25,227,463