CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities
Net income from continuing operations	$ 81,477	$ 30,670
Net income from discontinued operations	81	3,438
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	4,160	4,538
Provision for loan and lease losses	2,660	2,150
Net amortization of investment securities discounts/premiums	11,390	6,955
Stock-based compensation expense	3,017	2,400
Loans originated for sale	(485,198)	(398,410)
Sale of commercial loans originated for resale	635,964	429,365
Gain on sales of loans originated for resale	(20,733)	(12,581)
Gain on sale of IRA portfolio	(65,000)
Loss on sale of fixed assets	15	28
Loss on sale of other real estate owned		19
Fair value adjustment on investment in unconsolidated entity	2,981	20
Writedown of other real estate owned	45
Change in fair value of loans held for sale	2,255	1,946
Change in fair value of derivatives	(1,797)	(2,484)
Gain on sales of investment securities	(41)	(1,595)
(Increase) decrease in accrued interest receivable	(721)	458
(Increase) decrease in other assets	(8,419)	872
Change in fair value of discontinued loans held for sale	1,387	1,776
Change in discontinued assets held for sale	5,822	1,123
Decrease (increase) in other liabilities	2,602	(18,794)
Net cash provided by operating activities	171,947	51,894
Investing activities
Purchase of investment securities available-for-sale	(134,758)	(213,259)
Cash from call of investment securities held-to-maturity	2,000
Proceeds from sale of investment securities available-for-sale	3,529	83,918
Proceeds from redemptions of securities held-to-maturity		7,000
Proceeds from redemptions and prepayments of securities available-for-sale	163,784	234,163
Proceeds from sale of other real estate owned		85
Net increase in loans	(106,368)	(152,484)
Net decrease in discontinued loans held for sale	71,078	42,818
Proceeds from sale of fixed assets		366
Purchases of premises and equipment	(647)	(625)
Change in receivable from investment in unconsolidated entity	33,530
Return of investment in unconsolidated entity	7,280	19,199
Net cash provided by investing activities	39,428	21,181
Financing activities
Net decrease in deposits	(402,784)	(672,909)
Net decrease in securities sold under agreements to repurchase	(59)	(94)
Common stock issuance expense		(200)
Proceeds from the issuance of common stock	112
Proceeds from the sale of IRA portfolio	60,000
Net cash used in financing activities	(342,731)	(673,203)
Net decrease in cash and cash equivalents	(131,356)	(600,128)
Cash and cash equivalents, beginning of period	908,935	999,059
Cash and cash equivalents, end of period	777,579	398,931
Supplemental disclosure:
Interest paid	18,977	11,176
Taxes paid	1,899	1,051
Investment securities transferred in securitization	$ 62,076	$ 46,359