CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
CONSOLIDATED BALANCE SHEETS
Available for sale, amortized cost	$ 893,500	$ 748,255
Held to maturity, fair value	332,388	349,939
Covered loans, allowance	$ 1,291	$ 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	94,593,561	95,982,184
Common stock, shares outstanding	94,593,561	95,982,184
Employee stock trust, shares	10,971	11,672