Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest Income:
Loans and leases	$ 391,911	$ 379,790
Securities and money market investments	49,131	66,384
Total interest income	441,042	446,174
Interest Expense:
Interest-bearing checking and money market accounts	28,564	50,159
Savings accounts	8,934	8,083
Certificates of deposit	79,555	67,775
Borrowed funds	79,522	78,832
Total interest expense	196,575	204,849
Net interest income	244,467	241,325
Provision for (recovery of) credit losses	20,601	(1,222)
Net interest income after provision for (recovery of) credit losses	223,866	242,547
Non-Interest Income:
Fee income	7,018	7,228
Bank-owned life insurance	7,389	6,975
Net gain on securities	534	6,987
Other	1,958	3,595
Total non-interest income	16,899	24,785
Operating expenses:
Compensation and benefits	79,451	81,440
Occupancy and equipment	17,875	22,962
General and administrative	28,196	34,365
Total non-interest expense	125,522	138,767
Income before income taxes	115,243	128,565
Income tax expense	14,915	30,988
Net income	100,328	97,577
Preferred stock dividends	8,207	8,207
Net income available to common shareholders	$ 92,121	$ 89,370
Basic earnings per common share	$ 0.20	$ 0.19
Diluted earnings per common share	$ 0.20	$ 0.19
Net income	$ 100,328	$ 97,577
Other comprehensive (loss) income, net of tax:
Change in net unrealized gain (loss) on securities available for sale, net of tax of $4,611; and $(12,868), respectively	(12,157)	32,755
Change in pension and post-retirement obligations, net of tax of $(19); and $(16), respectively	45	37
Change in net unrealized gain (loss) on cash flow hedges, net of tax of $13,397	(35,888)	0
Less: Reclassification adjustment for sales of available-for-sale securities, net of tax of $206; and $1,517, respectively	(543)	(3,892)
Reclassification adjustment for net gain on cash flow hedges included in net income, net of tax of $178	(467)
Reclassification adjustment for defined benefit pension plan, net of tax of $(487) and $(695), respectively	1,288	1,783
Total other comprehensive (loss) income, net of tax	(47,722)	30,683
Total comprehensive income, net of tax	$ 52,606	$ 128,260