CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
CONSOLIDATED BALANCE SHEETS
Available for sale, amortized cost	$ 819,113	$ 748,255
Held to maturity, fair value	344,593	349,939
Covered loans, allowance	$ 2,823	$ 2,729
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	96,048,067	95,982,184
Common stock, shares outstanding	96,048,067	95,982,184
Employee stock trust, shares	11,217	11,672