CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Amortized cost	$ 209,464	$ 196,402
Allowance for loan losses	164,839	112,507
Tax benefit for accumulated other comprehensive (loss) income	$ (17,253)	$ (9,949)
Preferred stock, stated value (in dollars per share)	$ 0.20	$ 0.20
Preferred stock shares authorized (in shares)	20,000,000	20,000,000
Common stock par value (in dollars per share)	$ 0.20	$ 0.20
Common stock, shares authorized (in shares)	1,125,000,000.000	1,125,000,000.000
Common stock shares issued (in shares)	434,400,000	430,700,000
Common stock held in treasury (in shares)	6,100,000	4,400,000
Series A Preferred Stock
Preferred stock, stated value (in dollars per share)	$ 50	$ 50
Preferred stock shares outstanding (in shares)	3,300,000	3,300,000
Series B Preferred Stock
Preferred stock, stated value (in dollars per share)	$ 100	$ 100
Preferred stock shares outstanding (in shares)	4,000,000	4,000,000