Deposits Text Block List (Details) $ in Thousands	Sep. 30, 2021 USD ($) contract	Dec. 31, 2020 USD ($)
Time Deposits	$ 797,693
Interest-bearing Domestic Deposit, Checking	1,140,639	$ 692,113
Deposits, Savings Deposits	1,016,755	628,190
Deposits, Money Market Deposits	637,635	591,373
Deposits, Governmental	679,305	385,384
Interest-bearing	4,272,027	2,913,136
Non-interest-bearing	1,559,993	997,323
Time Deposits, at or Above FDIC Insurance Limit	134,300	89,000
Time Deposit Maturities, Year One	244,303
Time Deposit Maturities, Year Two	379,664
Time Deposit Maturities, Year Three	66,829
Time Deposit Maturities, Year Four	62,021
Time Deposit Maturities, Year Five	22,021
Time Deposit Maturities, after Year Five	22,855
Cash, FDIC Insured Amount	250
Deposits	5,832,020	3,910,459
Brokered Demand Deposits
Derivative, Notional Amount	100,000	110,000
Interest Rate Swap [Member]
Derivative, Notional Amount	$ 150,000	160,000
Derivative, Number of Instruments Held \| contract	16
Brokered Demand Certificate of Deposit and Savings Deposit
Derivative, Notional Amount	$ 100,000
Brokered Certificate of Deposit [Member]
Time Deposits	106,013	170,146
Time Deposit Maturities, Year One	101,307
Time Deposit Maturities, Year Two	4,216
Time Deposit Maturities, Year Three	490
Time Deposit Maturities, Year Four	0
Time Deposit Maturities, Year Five	0
Time Deposit Maturities, after Year Five	0
Retail Certificate of Deposit
Time Deposits, $100,000 or More	343,324	220,532
Time Deposits, Less than $100,000	348,356	225,398
Time Deposits	691,680	$ 445,930
Time Deposit Maturities, Year One	142,996
Time Deposit Maturities, Year Two	375,448
Time Deposit Maturities, Year Three	66,339
Time Deposit Maturities, Year Four	62,021
Time Deposit Maturities, Year Five	22,021
Time Deposit Maturities, after Year Five	$ 22,855

Deposits, Governmental

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The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation.

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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 deposits in accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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Nominal or face amount used to calculate payment on derivative.

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The number of derivative instruments of a particular group held by the entity.

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The aggregate of all domestic and foreign interest-bearing deposit liabilities.

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Amount of interest-bearing domestic checking deposit liabilities.

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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Amount of time deposit maturing after fifth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in fifth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in fourth fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in next fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in third fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit maturing in second fiscal year following current fiscal year. Time deposit includes, but is not limited to, certificate of deposit. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of time deposit liabilities, including certificates of deposit.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

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Amount of time deposit liabilities, including certificates of deposit, in denominations that meet or exceed the Federal Deposit Insurance Corporation (FDIC) insurance limit.

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Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000.

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