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Fair Value of Assets and Liabilities - Summary of Estimated Fair Values of Company Financial Instruments (Details) - USD ($) | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial assets |  |
Total available-for-sale securities | $ 1,230,788,000 | $ 1,421,422,000
Held-to-maturity securities | 2,930,000 | 7,035,000
Equity securities | 317,000 | 397,000
Fair Value, Inputs, Level 1 [Member] |  |
Financial assets |  |
Cash and due from banks | 153,559,000 | 167,242,000
Federal funds sold | 7,395,000 | 1,360,000
Certificates of deposit investments | 0 | 0
Total available-for-sale securities | 0 | 0
Held-to-maturity securities | 2,930,000 | 2,029,000
Equity securities | 317,000 | 397,000
Loans held for sale | 0 | 0
Loans net of allowance for credit losses | 0 | 0
Interest receivable | 0 | 0
Federal Reserve Bank stock | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Financial liabilities |  |
Deposits | 0 | 0
Other borrowings | 5,000,000 |
Securities sold under agreements to repurchase | 0 | 0
Interest payable | 0 | 0
Federal Home Loan Bank borrowings | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Financial assets |  |
Cash and due from banks | 0 | 0
Federal funds sold | 0 | 0
Certificates of deposit investments | 1,470,000 | 2,450,000
Total available-for-sale securities | 1,230,788,000 | 1,421,323,000
Held-to-maturity securities | 0 | 5,005,000
Equity securities | 0 | 0
Loans held for sale | 467,000 | 2,748,000
Loans net of allowance for credit losses | 0 | 0
Interest receivable | 25,975,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 5,843,000 | 6,484,000
Financial liabilities |  |
Deposits | 4,799,644,000 | 4,394,434,000
Other borrowings | 0 |
Securities sold under agreements to repurchase | 220,538,000 | 146,274,000
Interest payable | 3,007,000 | 1,346,000
Federal Home Loan Bank borrowings | 171,008,000 | 86,248,000
Fair Value, Inputs, Level 2 [Member] | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 87,977,000 | 94,400,000
Fair Value, Inputs, Level 2 [Member] | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 17,134,000 | 15,012,000
Level 3 |  |
Financial assets |  |
Cash and due from banks | 0 | 0
Federal funds sold | 0 | 0
Certificates of deposit investments | 0 | 0
Total available-for-sale securities | 0 | 99,000
Held-to-maturity securities | 0 | 0
Equity securities | 0 | 0
Loans held for sale | 0 | 0
Loans net of allowance for credit losses | 4,459,663,000 | 3,889,870,000
Interest receivable | 0 | 0
Federal Reserve Bank stock | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Financial liabilities |  |
Deposits | 683,856,000 | 562,304,000
Other borrowings | 0 |
Securities sold under agreements to repurchase | 0 | 0
Interest payable | 0 | 0
Federal Home Loan Bank borrowings | 0 | 0
Level 3 | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Level 3 | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Carrying Amount |  |
Financial assets |  |
Cash and due from banks | 153,559,000 | 167,242,000
Federal funds sold | 7,395,000 | 1,360,000
Certificates of deposit investments | 1,470,000 | 2,450,000
Total available-for-sale securities | 1,230,788,000 | 1,421,422,000
Held-to-maturity securities | 2,930,000 | 7,030,000
Equity securities | 317,000 | 397,000
Loans held for sale | 467,000 | 2,748,000
Loans net of allowance for credit losses | 4,661,046,000 | 3,938,120,000
Interest receivable | 25,975,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 5,843,000 | 6,484,000
Financial liabilities |  |
Deposits | 5,483,198,000 | 4,956,486,000
Other borrowings | 5,000,000 |
Securities sold under agreements to repurchase | 220,707,000 | 146,268,000
Interest payable | 3,007,000 | 1,346,000
Federal Home Loan Bank borrowings | 176,232,000 | 86,446,000
Carrying Amount | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 94,515,000 | 94,400,000
Carrying Amount | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 19,322,000 | 19,195,000
Fair Value |  |
Financial assets |  |
Cash and due from banks | 153,559,000 | 167,242,000
Federal funds sold | 7,395,000 | 1,360,000
Certificates of deposit investments | 1,470,000 | 2,450,000
Total available-for-sale securities | 1,230,788,000 | 1,421,422,000
Held-to-maturity securities | 2,930,000 | 7,034,000
Equity securities | 317,000 | 397,000
Loans held for sale | 467,000 | 2,748,000
Loans net of allowance for credit losses | 4,459,663,000 | 3,889,870,000
Interest receivable | 25,975,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 5,843,000 | 6,484,000
Financial liabilities |  |
Deposits | 5,483,500,000 | 4,956,738,000
Other borrowings | 5,000,000 |
Securities sold under agreements to repurchase | 220,538,000 | 146,274,000
Interest payable | 3,007,000 | 1,346,000
Federal Home Loan Bank borrowings | 171,008,000 | 86,248,000
Fair Value | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 87,977,000 | 94,400,000
Fair Value | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | $ 17,134,000 | $ 15,012,000

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