Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Debt Securities, Available-for-sale, Allowance for Credit Loss	$ 368	$ 0
Held to Maturity Fair value	111,162	110,374
Debt Securities, Held-to-maturity, Allowance for Credit Loss	9,268	0
Allowance for credit losses on loans and finance leases	$ 292,774	$ 155,139
Preferred stock, shares authorized	50,000,000	50,000,000
Non-cumulative Perpetual Monthly Income Preferred Stock: issued	22,004,000	22,004,000
Non-cumulative Perpetual Monthly Income Preferred Stock, shares outstanding	1,444,146	1,444,146
Non-cumulative Perpetual Monthly Income Preferred Stock, aggregate liquidation value	$ 36,104	$ 36,104
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	222,955,394	222,103,721
Common stock, shares outstanding	218,160,725	217,359,337
Legal surplus reserve amount	$ 97,586	$ 97,586
Income Tax Expense	7,752	7,752
Amortized cost debt securities	$ 1,875,677	$ 2,109,008