CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income		$ 20,471	$ 11,901
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses		(2,000)	7,036
Depreciation of premises and equipment		828	783
Net amortization of premium and discount on securities and loans		882	1,519
Amortization of intangibles		226	230
Share-based compensation		918	758
Tax benefit (expense) from stock option exercises and other equity awards		9	(85)
Income from bank-owned life insurance	[1]	(556)	(564)
Net gains on loan sales, including fair value adjustments		(11,858)	(6,013)
Proceeds from sales of loans		291,789	148,768
Loans originated for sale		(299,051)	(166,408)
(Increase) decrease in operating lease right-of-use assets		760	694
Increase (decrease) in operating lease liabilities		(744)	(677)
(Increase) decrease in other assets		30,504	(57,060)
Increase (decrease) in other liabilities		(35,544)	56,292
Net cash provided by (used in) operating activities		(3,366)	(2,826)
Cash flows from investing activities:
Purchases of mortgage-backed securities available for sale		(130,496)	(70,924)
Purchases of other investment securities available for sale		(77,528)	(45,000)
Maturities and principal payments of mortgage-backed securities available for sale		114,653	43,750
Maturities and principal payments of other investment securities available for sale		20,000	70,000
Net redemption (purchases) of Federal Home Loan Bank stock		5,513	(2,723)
Net (increase) decrease in loans		7,570	(145,740)
Purchases of loans		(1,539)	(51,081)
Proceeds from the sale of property acquired through foreclosure or repossession		0	1,066
Purchases of premises and equipment		(911)	(628)
Net cash provided by (used in) investing activities		(62,738)	(201,280)
Cash flows from financing activities:
Net increase (decrease) in deposits		170,789	207,432
Proceeds from Federal Home Loan Bank advances		414,000	879,000
Repayment of Federal Home Loan Bank advances		(540,947)	(821,930)
Treasury stock purchased		0	(4,322)
Net proceeds from stock option exercises and issuance of other equity awards, net of awards surrendered		(251)	(377)
Cash dividends paid		(9,012)	(8,883)
Net cash provided by (used in) financing activities		34,579	250,920
Net increase (decrease) in cash and cash equivalents		(31,525)	46,814
Cash and cash equivalents at beginning of period		202,268	138,455
Cash and cash equivalents at end of period		170,743	185,269
Noncash Investing and Financing Activities:
Loans charged off		64	635
Loans transferred to property acquired through foreclosure or repossession		0	28
Supplemental Disclosures:
Interest Payments		6,222	14,479
Income tax payments		$ 1,641	$ 1,036

[1] As reported in the Consolidated Statements of Income.