CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 66,336	$ 58,734	$ 56,036
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	1,910	4,500	200
Depreciation and amortization	2,632	2,769	2,756
Net amortization of securities premiums and discounts	1,446	1,159	510
Increase in cash surrender value of BOLI	(2,176)	(2,087)	(2,031)
Decrease/(increase) in deferred income taxes, net	(880)	(1,962)	(3,254)
(Gains)/losses on sale of securities available for sale	(2,554)	(40)	(1)
Net changes in:
Other assets	(12,432)	(818)	21,659
Other liabilities	5,681	(4,136)	4,983
Net cash provided by operating activities	59,963	58,119	80,858
Cash flows from investing activities:
Net change in loans held for investment	(137,216)	(427,049)	(102,193)
Purchase of available for sale securities	(257,231)	(670,550)	(652,280)
Purchase of held to maturity securities	(395,176)	(22,020)	(16,376)
Purchase of non-marketable securities	(2,856)	0	0
Maturities/sales of available for sale securities	458,855	383,257	644,244
Maturities of held to maturity securities	43,287	13,299	10,871
Purchase of premises and equipment	(2,069)	(7,709)	(15,537)
Purchase of other investments	(8,192)	(6,063)	(4,400)
Redemption of other investments	2,752	0	0
Proceeds from sale of assets	1,696	81	41
Net cash used in investing activities	(296,150)	(736,754)	(135,630)
Cash flows from financing activities:
Net increase in deposits	579,885	782,248	215,187
Cash dividends paid	(12,075)	(11,700)	(11,221)
Net cash used in share repurchase program	0	(2,834)	0
Net provided by financing activities	567,810	767,714	203,966
Net change in cash and cash equivalents	331,623	89,079	149,194
Cash and cash equivalents, beginning of year	383,837	294,758	145,564
Cash and cash equivalents, end of year	715,460	383,837	294,758
Supplemental disclosures of cash flow information:
Cash paid for interest	4,369	10,903	11,755
Income taxes paid	29,941	9,581	7,342
Issuance of common stock	0	403	6,973
Supplemental disclosures of non-cash transactions:
Investment securities available for sale transferred to held to maturity	316,925	0	0
Unrealized (losses)/gains on securities available for sale	20,540	(13,865)	8,935
Lease liabilities from obtaining right-of-use assets	$ 295	$ 0	$ 5,645