Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net (loss) income	$ (25,042)	$ 23,619
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities
Provision for credit losses	27,587	198
Reversal of provision for loan repurchases	(634)	(177)
Depreciation on premises and equipment	8,404	5,290
Amortization of intangible assets	859	1,241
Amortization of debt issuance costs	139	83
Net amortization of premium on securities	258	649
Net amortization of deferred loan costs and fees	(553)	83
Accretion of discounts on purchased loans	(355)	(125)
Write-off of other assets related to naming rights termination, net	6,669	0
Write-off of other assets related to naming rights termination, net	26,769	0
Debt extinguishment fee	2,515	0
Deferred income tax (benefit) expense	(71)	1,841
Bank owned life insurance income	(1,169)	(1,105)
Share-based compensation expense	3,046	2,350
Loss on interest rate swaps	288	9,583
Loss on investments in alternative energy partnerships and affordable housing investments	4,033	2,785
Impairment on capitalized software projects	157	835
Fair value adjustment for loans held-for-sale	1,561	(60)
Net loss (gain) on sale of loans	27	(4,319)
Net gain on sale of securities available-for-sale	(2,011)	(208)
Loss on sale or disposal of property and equipment	106	9
Repurchase of mortgage loans	0	(699)
Proceeds from sales of and principal collected on loans held-for-sale	613	3,849
Proceeds from sales of and principal collected on other loans held-for-sale	0	426
Change in accrued interest receivable and other assets	1,119	(14,593)
Change in accrued interest payable and other liabilities	(30,093)	(5,341)
Net cash (used in) provided by operating activities	(2,547)	26,214
Cash flows from investing activities:
Proceeds from sales of securities available-for-sale	22,728	782,019
Proceeds from maturities and calls of securities available-for-sale	30,000	38,029
Proceeds from principal repayments of securities available-for-sale	2,971	20,538
Purchases of securities available-for-sale	(322,590)	0
Cash received from bank-owned life insurance	501	0
Loan originations and principal collections, net	349,818	(149,182)
Purchase of loans and leases	(25,839)	0
Redemption of Federal Home Loan Bank stock	22,171	29,760
Purchase of Federal Home Loan Bank and other bank stock	(9,336)	(38,039)
Proceeds from sale of loans	0	558,021
Proceeds from sale of other real estate owned	0	551
Purchases of premises and equipment	(3,467)	(5,967)
Payments of capital lease obligations	(266)	(259)
Funding of equity investment	(14,201)	(1,501)
(Increase) decrease in investments in alternative energy partnerships	(2,630)	760
Net cash provided by investing activities	49,860	1,234,730
Cash flows provided by (used in) financing activities:
Net increase (decrease) in deposits	610,298	(1,624,354)
Net (decrease) increase in short-term Federal Home Loan Bank advances	(447,000)	305,000
Repayment of long-term Federal Home Loan Bank advances	(235,000)	0
Proceeds from long-term Federal Home Loan Bank advances	111,000	0
Debt extinguishment and financing fees paid	(9,368)	0
Redemption of preferred stock	(4,213)	0
Purchase of treasury stock	(12,041)	0
Purchase of restricted stock surrendered due to employee tax liability	(775)	(876)
Dividend equivalents paid on stock appreciation rights	(188)	(296)
Dividends paid on preferred stock	(6,975)	(8,616)
Dividends paid on common stock	(5,883)	(9,544)
Net cash used in financing activities	(145)	(1,338,686)
Net change in cash and cash equivalents	47,168	(77,742)
Cash and cash equivalents at beginning of period	373,472	391,592
Cash and cash equivalents at end of period	420,640	313,850
Supplemental cash flow information
Interest paid on deposits and borrowed funds	40,626	85,733
Income taxes paid	62	2,822
Income taxes refunds received	0	7
Supplemental disclosure of non-cash activities
Transfer from loans to other real estate owned, net	0	276
Transfer of loans held-for-investment to loans held-for-sale	0	1,127,339
Equipment acquired under capital leases	30	40
Operating lease right-of-use assets recognized	0	27,421
Operating lease liabilities recognized	0	28,822
Impact of adoption of ASU 2016-13 on retained earnings	$ 846,959	$ 963,544