Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, authorized shares	1,000,000	1,000,000
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, authorized shares	50,000,000	50,000,000
Common stock, issued shares	21,741,056	21,116,497
Common stock, outstanding shares	21,528,973	20,904,414
Treasury stock	212,083	212,083
Schedule of Available-for-sale Securities
Other investments, cost	$ 395,105	$ 375,090
Fixed Maturities
Schedule of Available-for-sale Securities
Fixed maturities, cost	367,348	350,063
Equity Securities
Schedule of Available-for-sale Securities
Equity securities, cost	24,917	22,278
Other Long-Term Investments
Schedule of Available-for-sale Securities
Other investments, cost	$ 2,840	$ 2,749