CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net income	$ 24,534	$ 8,009
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	1,105	1,671
Deferred income tax benefits, net of valuation allowance	(1,300)	(1,216)
Stock-based compensation	2,544	2,291
Provision for loan losses	4,682	662
Net amortization of investment securities	442	226
Stock dividends received on correspondent bank stock	(17)	(29)
Increase in cash surrender value of company-owned life insurance	(363)	(377)
Net gain on mortgage loans	(29,276)	(10,585)
Origination of mortgage loans held for sale	(1,331,989)	(640,575)
Proceeds from mortgage loans	1,238,881	615,961
Gain on sale of securities		(119)
Gain on sale of assets	(43)	(183)
Loss on assets held for sale	553
Loss on impairment of goodwill		1,572
Provision for other real estate owned	176
Net changes in operating assets and liabilities:
Accounts receivable	355	(728)
Accrued interest receivable and other assets	(4,473)	(522)
Accrued interest payable and other liabilities	858	2,429
Net cash used in operating activities	(93,331)	(21,513)
Activity in available-for-sale securities:
Maturities, prepayments, and calls	28,639	9,598
Sales	0	7,506
Purchases	(6,000)	(31,063)
Purchases of correspondent bank stock	(1,950)	(1,286)
Redemption of correspondent bank stock		3,218
Purchases of premises and equipment	(1,205)	(415)
Proceeds from sale of premises and equipment	10
Proceeds from sale of other real estate owned	288
Net cash paid on acquisitions (Note 2)	(61,316)
Loan and note receivable originations and principal collections, net	(414,486)	(103,937)
Net cash used in investing activities	(456,020)	(116,379)
Cash flows from financing activities
Net change in deposits	470,046	149,026
Proceeds from subordinated notes	18,000
Repurchase of common stock	(377)	(743)
Settlement of restricted stock	(261)	(110)
Recognition of capitalized subordinated notes issuance costs	(269)
Payments to Federal Reserve borrowings	(69,750)
Proceeds from Federal Reserve borrowings	204,313
Payments to Federal Home Loan Bank Topeka borrowings	(30,000)	(72,346)
Proceeds from Federal Home Loan Bank Topeka borrowings	35,000	67,346
Net cash provided by financing activities	626,702	143,173
Net change in cash and cash equivalents	77,351	5,281
Cash and cash equivalents, beginning of year	78,638	73,357
Cash and cash equivalents, end of year	155,989	78,638
Supplemental cash flow information:
Interest paid on deposits and borrowed funds	7,078	12,922
Income tax payment, net of refunds received	11,763	2,476
Cash paid for amounts included in the measurement of lease liabilities	5,659	5,351
Supplemental noncash disclosures:
Reclass of held for sale assets, net of liabilities	(2,990)	3,436
Contingent asset resulting from sale of held for sale assets	3,062
Adoption of ASU 2018-02 - Reclassification of stranded tax effects		235
Change in unrealized gain on available for sale securities	1,113	1,831
Lease right-of-use-asset obtained in exchange for lease liabilities	$ 3,600	$ 16,580