Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Dec. 31, 2016
Allowance for loan and lease losses	$ 230,870	$ 230,870	$ 205,603
Preferred stock, shares authorized	50,000,000	50,000,000	50,000,000
Preferred stock, shares issued	22,004,000	22,004,000	22,004,000
Preferred stock, shares outstanding	1,444,146	1,444,146	1,444,146
Preferred stock, liquidation value	$ 36,104	$ 36,104	$ 36,104
Common stock, par value	$ 0.1	$ 0.1	$ 0.1
Common stock, shares authorized	2,000,000,000	2,000,000,000	2,000,000,000
Common stock, shares issued	220,220,026	220,220,026	218,700,394
Common stock, shares outstanding	216,175,003	216,175,003	217,446,205
Income tax expense	$ (8,398)	$ (7,181)
Legal Surplus Amount	52,436	52,436	$ 52,436
Held To Maturity Securities Fair Value	$ 130,125	130,125	132,759
Accumulated Other Comprehensive Income (Loss) [Member]
Income tax expense		$ 7,752	$ 7,752