The fair value of borrowings under federal reserve bank.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of accrued but unpaid interest on deposit liabilities.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Amount of short term borrowing where a bank borrows, at the federal funds rate, from another bank.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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FAIR VALUE - Summary of carrying amounts and estimated fair values for financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 375,936	$ 155,989	$ 118,514	$ 78,638
Loans, net	1,531,387	1,520,294
Accrued interest receivable	6,852	6,618
Liabilities
Deposits	1,807,825	1,619,910
FHLB Topeka Borrowings - fixed rate	198,041	149,563
Subordinated notes	24,248	24,291
Accrued interest payable	612	453
Carrying Amount
Assets
Cash and cash equivalents	375,936	155,989
Loans, net	1,531,387	1,520,294
Accrued interest receivable	6,852	6,618
Liabilities
Deposits	1,807,825	1,619,910
FHLB Topeka Borrowings - fixed rate	15,000	15,000
Federal Reserve Borrowings - fixed rate	183,041	134,563
Accrued interest payable	612	453
Subordinated notes - fixed-to-floating rate \| Carrying Amount
Liabilities
Subordinated notes	24,248	24,291
Level 1 \| Estimated Fair Value
Assets
Cash and cash equivalents	375,936	155,989
Level 2 \| Estimated Fair Value
Assets
Accrued interest receivable	6,852	6,618
Liabilities
Deposits	1,809,274	1,621,648
FHLB Topeka Borrowings - fixed rate	15,083	15,099
Federal Reserve Borrowings - fixed rate	183,041	134,563
Accrued interest payable	612	453
Level 3 \| Estimated Fair Value
Assets
Loans, net	1,526,059	1,512,699
Level 3 \| Subordinated notes - fixed-to-floating rate \| Estimated Fair Value
Liabilities
Subordinated notes	$ 25,658	$ 25,750