CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities:
Net income	$ 105,025	$ 60,076
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	9,864	6,901
Depreciation of premises and equipment, net	6,347	6,454
Amortization of fees and discounts, net	11,952	15,002
Amortization of intangible assets	2,223	2,352
Income from mortgage banking activities, net	(4,938)	(4,785)
Gain on sale of securities, net	(21)	(1,764)
Loss on sale of other real estate owned and valuation adjustments, net	83	187
Stock-based compensation expense	1,857	2,449
Unrealized gain on equity investments	(18,595)	0
Debt extinguishment cost	0	695
Deferred income tax expense	3,330	3,097
(Increase) decrease in accrued interest receivable	(1,926)	(762)
Decrease (increase) in other assets	3,171	(7,451)
Origination of loans held for sale	(265,674)	(258,962)
Proceeds from sales of loans held for sale	257,026	284,797
Increase in accrued interest payable	6,083	2,731
(Decrease) increase in other liabilities	(5,273)	962
Increase in value of bank owned life insurance	(311)	(899)
Increase in capitalized interest, net	(2,795)	(3,252)
Net cash provided by operating activities	107,428	107,828
Investing activities:
Purchases of investment securities held to maturity	0	0
Repayments, maturities and calls of investment securities held to maturity	7,055	1,175
Sale of investment securities available for sale	7,012	415,486
Purchases of investment securities available for sale	(280,401)	(593,878)
Repayments of investment securities available for sale	82,501	174,251
Proceeds of bank-owned life insurance death benefit	0	371
Proceeds from bank-owned life insurance surrender	96,429	0
Net increase in loans	(119,641)	(231,955)
Purchases of stock of Federal Home Loan Bank of Pittsburgh	(137,199)	(128,159)
Redemptions of stock of Federal Home Loan Bank of Pittsburgh	151,943	133,130
Sales of other real estate owned	2,323	4,405
Investment in premises and equipment	(4,910)	(7,336)
Sales of premises and equipment	201	1,593
Net cash used for investing activities	(194,687)	(230,917)
Financing activities:
Net increase in demand and saving deposits	341,411	320,784
Increase (decrease) in time deposits	83,788	(36,055)
Increase in brokered deposits	57,638	35,079
Decrease in loan payable	0	(359)
Receipts from FHLB advances	85,335,984	109,432,123
Repayments of FHLB advances	(85,707,520)	(109,588,547)
Receipts from federal funds purchased and securities sold under agreement to repurchase	18,821,100	17,610,000
Repayments of federal funds purchased and securities sold under agreement to repurchase	(18,849,100)	(17,670,000)
Dividends paid	(9,797)	(6,600)
Issuance of common stock and exercise of common stock options	9,776	2,317
Redemption of senior debt	0	(55,000)
Purchase of treasury stock	(8,515)	(9,211)
Net cash provided by financing activities	74,765	34,531
Decrease in cash and cash equivalents	(12,494)	(88,558)
Cash and cash equivalents at beginning of period	723,866	821,923
Cash and cash equivalents at end of period	711,372	733,365
Supplemental Disclosure of Cash Flow Information:
Interest	27,297	21,893
Income taxes	21,754	20,861
Non-cash information:
Loans transferred to other real estate owned	1,907	4,925
Loans transferred to portfolio from held-for-sale at fair value	7,261	12,782
Goodwill adjustments, net	$ 0	$ (1,532)