Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Held-to-maturity, at fair value	$ 149,928	$ 149,267
Loans and leases held-for-sale, fair value	$ 114,831	$ 18,070
Preferred stock, par value (dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	2,000,000	30,000,000
Preferred stock, shares issued (in shares)	7,000	7,000
Preferred stock, shares outstanding (in shares)	7,000	7,000
Common stock, par value (dollars per share)	$ 1	$ 0.01
Common stock, shares authorized (in shares)	220,000,000	142,268,000
Common stock, shares issued (in shares)	153,571,381	88,198,460
Common stock, shares outstanding (in shares)	153,571,381	88,198,460
Treasury stock, shares (in shares)	0	4,909,069