CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Securities held to maturity	$ 369,881	$ 202,813
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares issued	38,090,568	34,356,892
Common stock, shares outstanding	38,021,835	34,351,409
Treasury Stock, Shares	68,733	5,484