CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Held for Investment, Fair Value, Total	$ 374,961	$ 369,881
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	43,601,722	38,090,568
Common stock, shares outstanding	43,512,179	38,021,835