CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED BALANCE SHEETS
Amortized cost	$ 1,355,614	$ 1,242,933
Allowance for Credit Losses	$ 0	$ 0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	1,500,000,000	1,500,000,000
Common stock, shares issued	608,421,785	594,729,610
Treasury Stock, Shares	18,076,127	17,074,710