Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract]
Fixed maturities, held-to-maturity securities, fair value	$ 291	$ 404
Fixed maturities, available-for-sale securities, amortized cost	2,773,745	2,773,566
Fixed maturities, trading securities, fair value	11,880	14,363
Equity securities, available-for-sale securities, amortized cost	72,616	71,651
Equity securities, trading securities, amortized cost	4,373	3,708
Allowance for doubtful accounts	789	618
Property and equipment accumulated depreciation	$ 45,188	$ 41,492
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	25,064,339	25,019,415
Common stock, shares outstanding	25,064,339	25,019,415