Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Consolidated Balance Sheets
Fixed income securities, available-for-sale, amortized cost	$ 1,985,250	$ 1,729,755
Commercial levered loans, fair value	14,323	15,858
Limited partnerships and limited liability companies, cost	$ 61,015	$ 51,903
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	43,034,220	38,864,289
Common stock, shares outstanding	43,021,300	38,851,369
Treasury shares, shares	12,920	12,920