Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]
Fixed maturities, held-to-maturity securities, fair value	$ 656	$ 669
Fixed maturities, available-for-sale securities, amortized cost	2,759,461	2,733,557
Fixed maturities, trading securities, amortized cost	13,904	8,049
Equity securities, available-for-sale securities, amortized cost	71,021	70,957
Equity securities, trading securities, amortized cost	2,704	2,367
Allowance for doubtful accounts	970	896
Property and equipment accumulated depreciation	$ 38,058	$ 36,972
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	25,396,845	25,360,893
Common stock, shares outstanding	25,396,845	25,360,893