Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Balance Sheet Related Disclosures [Abstract]
Fixed maturities, held-to-maturity securities, fair value	$ 1,668	$ 1,681
Fixed maturities, available-for-sale securities, amortized cost	2,666,902	2,657,800
Fixed maturities, trading securities, amortized cost	12,470	12,645
Equity securities, available-for-sale securities, amortized cost	67,464	66,892
Equity securities, trading securities, amortized cost	1,772	1,772
Allowance for doubtful accounts	888	866
Property and equipment accumulated depreciation	$ 34,060	$ 34,094
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	25,266,295	25,227,463
Common stock, shares outstanding	25,266,295	25,227,463