CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 52,505	$ 43,745	$ 21,225
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,354	5,314	4,300
FHLB Stock dividends	(133)	(171)	(97)
Provision for loan losses	25,151	3,738	2,120
Deferred income taxes	(3,015)	912	2,523
Restricted stock expense	2,352	1,661	1,154
Increase in cash value of life insurance	(1,514)	(1,414)	(937)
Amortization and accretion, net, related to acquisitions	(3,945)	(1,791)	(680)
Bank premises and equipment (gain)/loss	(443)	(13)	137
Acquisition gain	(7,835)	0	0
Securities gain	(281)	(122)	(334)
Loss on sale/writedown of other real estate	1,352	680	342
Residential loans originated and held for sale	(318,969)	(186,132)	(137,287)
Proceeds from sale of residential loans held for sale	308,347	180,120	137,293
Changes in:
Interest receivable	(9,185)	(1,203)	(671)
Other assets	(5,313)	1,157	2,401
Interest payable	(374)	914	144
Operating lease liability	(1,545)	(898)	0
Other liabilities	1,676	(1,797)	(133)
Net cash provided by operating activities	51,185	44,700	31,500
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of available-for-sale securities	(356,755)	(180,502)	(66,350)
Purchases of other securities	(3,056)	(11,085)	(8,644)
Proceeds from maturities and calls of available-for-sale securities	203,670	109,189	61,587
Proceeds from sales of securities available-for-sale	579	32,976	40,289
Proceeds from redemption of other securities	3,407	2,712	5,714
Increase in loans	(131,589)	(44,102)	(81,193)
Net additions to premises and equipment	(4,398)	(7,892)	(4,057)
Purchase of bank-owned life insurance	(5,683)	0	0
Proceeds from sale of other real estate owned	4,036	5,097	1,396
Proceeds from the sale of land	1,416	0	0
Proceeds from the sale of other assets	0	65	0
Cash received in excess of cash paid for acquisitions	29,245	30,860	42,450
Net cash used in investing activities	(259,128)	(62,682)	(8,808)
CASH FLOWS FROM FINANCING ACTIVITIES
Increase/(Decrease) in deposits	664,413	(67,821)	46,224
Proceeds from borrowed funds	212,000	364,715	105,000
Repayment of borrowed funds	(321,172)	(258,673)	(168,680)
Dividends paid on common stock	(8,589)	(5,190)	(2,557)
Net proceeds from issuance of stock	0	0	(237)
Cash paid to repurchase common stock	(8,067)	(5,229)	0
Repurchase of restricted stock for payment of taxes	(494)	(63)	(23)
Principal payment on finance lease liabilities	(183)	0	0
Issuance of subordinated debt, net	63,725	0	64,766
Net cash provided by financing activities	601,633	27,739	44,493
Net increase in cash and cash equivalents	393,690	9,757	67,185
Cash and cash equivalents at beginning of year	168,864	159,107	91,922
Cash and cash equivalents at end of year	562,554	168,864	159,107
Supplemental disclosures:
Interest	22,476	20,673	10,982
Income taxes, net of refunds	13,971	11,102	2,120
Non-cash activities:
Transfers of loans to other real estate	3,595	1,706	1,528
Dividends on restricted stock grants	135	93	43
Right-of-use assets obtained in exchange for operating lease liabilities	3,162	6,717	0
Restricted stock grants
Non-cash activities:
Issuance of restricted stock grants	78	89	61
Southwest acquisition
Non-cash activities:
Stock issued in connection with acquisition	0	0	36,005
Sunshine acquisition
Non-cash activities:
Stock issued in connection with acquisition	0	0	23,428
FMB Banking Corporation
Non-cash activities:
Stock issued in connection with acquisition	0	0	63,540
FPB acquisition
Non-cash activities:
Stock issued in connection with acquisition	0	78,220	0
FFB acquisition
Non-cash activities:
Stock issued in connection with acquisition	0	55,468	0
SWG
Non-cash activities:
Stock issued in connection with acquisition	$ 47,858	$ 0	$ 0