Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities
Net income	$ 24,735	$ 47,804
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan and lease losses	10,113	1,333
Depreciation and amortization	8,884	6,716
Share-based compensation expense	4,900	4,384
Deferred taxes	(681)	4,172
Net amortization of investment securities premiums and discounts	421	813
Unrealized (gain) loss on equity securities	345	296
Loss upon acquisition of interest-only GNMA securities	7,476	0
(Gain) loss on sale of SBA and other loans	(304)	(2,572)
Origination of loans held for sale	(22,152)	(11,554)
Proceeds from the sale of loans held for sale	19,591	12,640
Amortization of fair value discounts and premiums	232	85
Net (gain) loss on sales of other real estate owned	0	(28)
Valuation and other adjustments to other real estate owned	31	78
Earnings on investment in bank-owned life insurance	(3,653)	(3,900)
(Increase) decrease in accrued interest receivable and other assets	(63,311)	(7,857)
Increase (decrease) in accrued interest payable and other liabilities	16,502	13,061
Net Cash Provided By (Used In) Operating Activities	3,129	65,471
Cash Flows from Investing Activities
Proceeds from maturities, calls and principal repayments of securities available for sale	11,616	26,216
Purchases of investment securities available for sale	0	(763,242)
Origination of mortgage warehouse loans	(12,246,471)	(14,260,621)
Proceeds from repayments of mortgage warehouse loans	11,624,062	14,123,291
Net (increase) decrease in loans and leases, excluding mortgage warehouse loans	(22,665)	(18,680)
Proceeds from sales of loans	0	29,038
Purchase of loans	(555,587)	(278,508)
Proceeds from bank-owned life insurance	0	529
Net purchases of FHLB, Federal Reserve Bank, and other restricted stock	(12,262)	(30,148)
Purchases of bank premises and equipment	(345)	(608)
Proceeds from sales of other real estate owned	0	28
Purchases of leased assets under lessor operating leases	(11,672)	(6,486)
Net Cash Provided By (Used In) Investing Activities	(1,213,324)	(1,179,191)
Cash Flows from Financing Activities
Net increase in deposits	1,043,541	495,812
Net increase (decrease) in short-term borrowed funds from the FHLB	(335,970)	777,937
Net increase (decrease) in federal funds purchased	219,000	(50,000)
Proceeds from long-term borrowed funds from the FHLB	350,000	0
Repayments of other borrowings	(25,000)	0
Preferred stock dividends paid	(7,229)	(7,229)
Exercise of warrants	0	112
Purchase of treasury stock	(571)	0
Payments of employee taxes withheld from share-based awards	(1,210)	(700)
Proceeds from issuance of common stock	1,294	3,191
Net Cash Provided By (Used In) Financing Activities	1,243,855	1,219,123
Net Increase (Decrease) in Cash and Cash Equivalents	33,660	105,403
Cash and Cash Equivalents – Beginning	62,135	146,323
Cash and Cash Equivalents – Ending	95,795	251,726
Supplementary Cash Flows Information:
Interest paid	85,560	73,162
Income taxes paid	3,005	4,174
Non-cash items:
Transfer of loans to other real estate owned	291	57
Transfer of loans held for sale to held for investment	0	129,691
Acquisition of interest-only GNMA securities securing a mortgage warehouse loan	17,157	0
Acquisition of residential reverse mortgage loans securing a mortgage warehouse loan	1,325	0
University relationship intangible purchased not settled	$ 0	$ 1,502