Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Fixed maturities, held-to-maturity securities, fair value	$ 655	$ 675
Fixed maturities, available-for-sale securities, amortized cost	2,801,074	2,793,069
Fixed maturities, trading securities, amortized cost	11,587	11,475
Equity securities, available-for-sale securities, amortized cost	67,909	68,514
Equity securities, trading securities, amortized cost	4,410	4,443
Allowance for doubtful accounts	1,248	867
Property and equipment accumulated depreciation	$ 50,043	$ 46,590
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	25,357,605	25,151,428
Common stock, shares outstanding (in shares)	25,357,605	25,151,428