CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities
Net income from continuing operations	$ 51,268	$ 87,540	$ 17,338
Net income from discontinued operations, net of tax	291	1,137	4,335
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	5,227	5,528	5,980
Provision for loan and lease losses	4,400	3,585	2,920
Net amortization of investment securities discounts/premiums	20,337	15,636	10,828
Stock-based compensation expense	5,689	3,450	3,245
Loans originated for sale	(1,795,376)	(866,303)	(521,913)
Sale of commercial loans originated for resale	1,235,413	638,274	458,942
Gain on sales of loans originated for resale	(25,023)	(20,830)	(18,072)
Deferred income tax expense	1,607	15,824	20,799
Gain on sale of IRA portfolio		(65,000)
Loss (gain) from discontinued operations	2,014	3,993	(3,293)
Loss on sale of fixed assets		15	122
Loss on sale of other real estate owned			19
Fair value adjustment on investment in unconsolidated entity		3,689	(20)
Writedown of other real estate owned		45
Change in fair value of loans held-for-sale	(963)	979	1,964
Change in fair value of derivatives	1,914	(647)	(1,811)
Gain on sales of investment securities		(41)	(2,231)
Increase in accrued interest receivable	(866)	(1,853)	(311)
(Increase) decrease in other assets	(10,422)	(8,184)	5,678
Change in fair value of discontinued loans held-for-sale		352	2,736
Change in fair value of discontinued assets held-for-sale	487	195	3,158
Increase (decrease) in other liabilities	10,920	8,655	(18,504)
Net cash used in operating activities	(493,083)	(173,961)	(28,091)
Investing activities
Purchase of investment securities available-for-sale	(157,478)	(134,758)	(579,925)
Cash from call of investment securities held-to-maturity		2,000
Proceeds from sale of investment securities available-for-sale		3,529	284,373
Proceeds from redemptions and prepayments of securities held-to-maturity			7,000
Proceeds from redemptions and prepayments of securities available-for-sale	173,916	207,703	278,290
Proceeds from sale of other real estate owned		405	85
Net increase in loans	(322,611)	(115,054)	(172,853)
Net decrease in discontinued loans held-for-sale	49,170	94,371	52,343
Proceeds from sale of fixed assets			945
Purchases of premises and equipment	(2,012)	(2,379)	(515)
Change in receivable from investment in unconsolidated entity	83	9,570	(7,989)
Return of investment in unconsolidated entity	20,119	11,511	52,477
Decrease in discontinued assets held for sale	5,503	7,570	1,454
Net cash (used in) provided by investing activities	(233,310)	84,468	(84,315)
Financing activities
Net increase (decrease) in deposits	1,116,316	(325,128)	22,538
Net decrease in securities sold under agreements to repurchase	(11)	(124)	(57)
Costs from issuance of common stock			(200)
Proceeds from the issuance of common stock options	258	112
Proceeds from the sale of IRA portfolio		60,000
Net cash provided by (used in) financing activities	1,116,563	(265,140)	22,281
Net increase (decrease) in cash and cash equivalents	390,170	(354,633)	(90,125)
Cash and cash equivalents, beginning of period	554,302	908,935	999,059
Cash and cash equivalents, end of period	944,472	554,302	908,935
Supplemental disclosure:
Interest paid	37,532	27,021	15,326
Taxes paid	20,683	12,663	4,159
Non-cash reclassification of commercial loans sold			240,714
Non-cash investing and financing activities
Investment securities transferred in securitizations	93,191	$ 62,076	46,359
Transfers of discontinued loans to other real estate owned	$ 5,295		$ 450