Income Taxes - Schedule of Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal income tax rate	21.00%	21.00%	35.00%
Tax computed at statutory rate	$ 122,989	$ 149,963	$ 108,105
Increase/(decrease) resulting from:
State income taxes, net of federal income tax benefit	15,319	24,553	4,753
Bank-owned life insurance (“BOLI”)	(4,915)	(3,626)	(8,401)
401(k) – employee stock ownership plan (“ESOP”)	(764)	(653)	(904)
Tax-exempt interest	(6,480)	(6,538)	(7,890)
Non-deductible expenses	10,609	8,301	7,558
LIHTC credits and benefits, net of amortization	(4,419)	(7,178)	(5,327)
Other tax credits	0	(2,825)	(2,480)
Change in valuation allowance – DTA	(74)	(73)	(40,473)
Other changes in unrecognized tax benefits	4,044	6,143	46
Effect of Tax Act	0	(6,746)	82,027
Other	(3,018)	(3,719)	(5,122)
Total	$ 133,291	$ 157,602	$ 131,892