CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 11,901	$ 17,495
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	7,036	650
Depreciation of premises and equipment	783	838
Net amortization of premium and discount on securities and loans	1,519	822
Amortization of intangibles	230	239
Share-based compensation	758	740
Tax benefit from stock option exercises and other equity awards	(85)	7
Income from bank-owned life insurance	(564)	(649)
Net gains on loan sales and commissions on loans originated for others, including fair value adjustments	(6,013)	(2,474)
Proceeds from sales of loans	148,768	51,673
Loans originated for sale	(166,408)	(46,864)
(Increase) decrease in operating lease right-of-use assets	694	673
Increase (decrease) in operating lease liabilities	(677)	(666)
(Increase) decrease in other assets	(57,060)	(11,022)
Increase (decrease) in other liabilities	56,292	9,532
Net cash provided by (used in) operating activities	(2,826)	20,994
Cash flows from investing activities:
Purchases of mortgage-backed securities available for sale	(70,924)	(62,109)
Purchases of other investment securities available for sale	(45,000)	(10,507)
Maturities and principal payments of mortgage-backed securities available for sale	43,750	19,718
Maturities and principal payments of other investment securities available for sale	70,000	10,000
Remittance (purchases) of Federal Home Loan Bank stock	(2,723)	(1,957)
Net (increase) decrease in loans	(145,740)	(54,147)
Purchases of loans	(51,081)	(161)
Proceeds from the sale of property acquired through foreclosure or repossession	1,066	0
Purchases of premises and equipment	(628)	(1,655)
Proceeds from surrender of bank-owned life insurance	0	326
Net cash provided by (used in) investing activities	(201,280)	(100,492)
Cash flows from financing activities:
Net increase (decrease) in deposits	207,432	(19,788)
Proceeds from Federal Home Loan Bank advances	879,000	532,000
Repayment of Federal Home Loan Bank advances	(821,930)	(426,593)
Treasury stock purchased	(4,322)	0
Net proceeds from stock option exercises and issuance of other equity awards	(377)	116
Cash dividends paid	(8,883)	(8,153)
Net cash provided by (used in) financing activities	250,920	77,582
Net increase (decrease) in cash and cash equivalents	46,814	(1,916)
Cash and cash equivalents at beginning of period	138,455	93,475
Cash and cash equivalents at end of period	185,269	91,559
Noncash Investing and Financing Activities:
Loans charged off	635	103
Loans transferred to property acquired through foreclosure or repossession	28	0
Operating lease right-of-use assets	0	28,923
Operating lease liabilities	0	30,853
Fair value of debt securities transferred from held-to-maturity to available for sale	0	10,316
Supplemental Disclosures:
Interest Payments	14,479	14,082
Income tax payments	$ 1,036	$ 1,136