CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net income	$ 20,610	$ 24,534
Adjustments to reconcile net income to net cash used in operating activities:
Net amortization of investment securities	131	442
Stock dividends received on correspondent bank stock	(76)	(17)
Provision for loan losses	1,230	4,682
Net gain on mortgage loans	(16,060)	(29,276)
Origination of mortgage loans held for sale	(1,263,346)	(1,331,989)
Proceeds from mortgage loans	1,417,808	1,238,881
Depreciation and amortization	1,273	1,117
Provision for other real estate owned		176
Deferred income tax benefits, net of valuation allowance	(668)	(1,300)
Increase in cash surrender value of company-owned life insurance	(354)	(363)
Loss on assets held for sale		553
Stock-based compensation	2,903	2,544
Gain on equity interests	(489)
Loss/(Gain) on sale of assets	27	(43)
Net changes in operating assets and liabilities:
Change in accounts receivable	(247)	355
Change in accrued interest receivable and other assets	1,254	(4,473)
Change in accrued interest payable and other liabilities	1,852	858
Net cash provided by/(used in) operating activities	165,848	(93,319)
Activity in available-for-sale securities:
Maturities, prepayments, and calls	16,241	28,639
Purchases	(17,667)	(6,000)
Purchases of correspondent bank stock	(1)	(1,950)
Redemption of correspondent bank stock	973
Contributions to low-income housing tax credit investments	(2,087)
Loan and note receivable originations and principal collections, net	(162,900)	(414,486)
Purchases of premises and equipment	(2,108)	(1,205)
Proceeds from sale of premises and equipment		10
Proceeds from sale of other real estate owned	194	288
Net cash received/(paid) on acquisitions	120,997	(61,316)
Net cash used in investing activities	(46,358)	(456,020)
Cash flows from financing activities
Net change in deposits	206,566	470,046
Payments to Federal Home Loan Bank borrowings		(30,000)
Proceeds from Federal Home Loan Bank borrowings		35,000
Payments to Federal Reserve borrowings	(194,608)	(69,750)
Proceeds from Federal Reserve borrowings	83,674	204,313
Proceeds from subordinated notes, net of issuance costs	14,667	17,719
Proceeds from the exercise of stock options	1,706
Repurchase of common stock		(377)
Settlement of restricted stock	(501)	(261)
Net cash provided by financing activities	111,504	626,690
Net change in cash and cash equivalents	230,994	77,351
Cash and cash equivalents, beginning of year	155,989	78,638
Cash and cash equivalents, end of period	386,983	155,989
Supplemental cash flow information:
Interest paid on deposits and borrowed funds	5,514	7,078
Income tax payment, net of refunds received	6,336	11,763
Cash paid for amounts included in the measurement of lease liabilities	$ 5,287	5,659
Supplemental noncash disclosures:
Common stock issued for Teton acquisition	39,818
Reclass of held for sale assets, net of liabilities		(2,990)
Contingent asset resulting from sale of held for sale assets		3,062
Change in unrealized (loss)/gain on available-for-sale securities	$ (620)	1,113
Lease right-of-use-asset obtained in exchange for lease liabilities	$ 2,262	$ 3,600