CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CONSOLIDATED BALANCE SHEETS
Available for sale, amortized cost	$ 945,156	$ 899,817
Held to maturity, fair value	$ 369,614	$ 388,930
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	90,108,336	90,640,944
Common stock, shares outstanding	90,108,336	90,640,944
Employee stock trust, shares	7,539	7,794