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Fair Value of Assets and Liabilities - Summary of Estimated Fair Values of Company Financial Instruments (Details) - USD ($) | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Financial assets |  |
Total available-for-sale securities | $ 1,349,948,000 | $ 1,421,422,000
Held-to-maturity securities | 2,972,000 | 7,035,000
Equity securities | 308,000 | 397,000
Fair Value, Inputs, Level 1 [Member] |  |
Financial assets |  |
Cash and due from banks | 130,689,000 | 167,242,000
Federal funds sold | 6,855,000 | 1,360,000
Certificates of deposit investments | 0 | 0
Total available-for-sale securities | 0 | 0
Held-to-maturity securities | 2,972,000 | 2,029,000
Equity securities | 308,000 | 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 | 10,000,000 |
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 | 1,715,000 | 2,450,000
Total available-for-sale securities | 1,349,948,000 | 1,421,323,000
Held-to-maturity securities | 0 | 5,005,000
Equity securities | 0 | 0
Loans held for sale | 1,286,000 | 2,748,000
Loans net of allowance for credit losses | 0 | 0
Interest receivable | 23,323,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 8,684,000 | 6,484,000
Financial liabilities |  |
Deposits | 4,666,356,000 | 4,394,434,000
Other borrowings | 0 |
Securities sold under agreements to repurchase | 174,859,000 | 146,274,000
Interest payable | 1,662,000 | 1,346,000
Federal Home Loan Bank borrowings | 372,350,000 | 86,248,000
Fair Value, Inputs, Level 2 [Member] | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 91,832,000 | 94,400,000
Fair Value, Inputs, Level 2 [Member] | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 18,440,000 | 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 | 4,441,169,000 | 3,889,870,000
Interest receivable | 0 | 0
Federal Reserve Bank stock | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Financial liabilities |  |
Deposits | 654,925,000 | 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 | 130,689,000 | 167,242,000
Federal funds sold | 6,855,000 | 1,360,000
Certificates of deposit investments | 1,715,000 | 2,450,000
Total available-for-sale securities | 1,349,948,000 | 1,421,422,000
Held-to-maturity securities | 2,972,000 | 7,030,000
Equity securities | 308,000 | 397,000
Loans held for sale | 1,286,000 | 2,748,000
Loans net of allowance for credit losses | 4,588,302,000 | 3,938,120,000
Interest receivable | 23,323,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 8,684,000 | 6,484,000
Financial liabilities |  |
Deposits | 5,318,978,000 | 4,956,486,000
Other borrowings | 10,000,000 |
Securities sold under agreements to repurchase | 174,934,000 | 146,268,000
Interest payable | 1,662,000 | 1,346,000
Federal Home Loan Bank borrowings | 376,286,000 | 86,446,000
Carrying Amount | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 94,476,000 | 94,400,000
Carrying Amount | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 19,279,000 | 19,195,000
Fair Value |  |
Financial assets |  |
Cash and due from banks | 130,689,000 | 167,242,000
Federal funds sold | 6,855,000 | 1,360,000
Certificates of deposit investments | 1,715,000 | 2,450,000
Total available-for-sale securities | 1,349,948,000 | 1,421,422,000
Held-to-maturity securities | 2,972,000 | 7,034,000
Equity securities | 308,000 | 397,000
Loans held for sale | 1,286,000 | 2,748,000
Loans net of allowance for credit losses | 4,441,169,000 | 3,889,870,000
Interest receivable | 23,323,000 | 19,868,000
Federal Reserve Bank stock | 17,050,000 | 13,845,000
Federal Home Loan Bank stock | 8,684,000 | 6,484,000
Financial liabilities |  |
Deposits | 5,321,281,000 | 4,956,738,000
Other borrowings | 10,000,000 |
Securities sold under agreements to repurchase | 174,859,000 | 146,274,000
Interest payable | 1,662,000 | 1,346,000
Federal Home Loan Bank borrowings | 372,350,000 | 86,248,000
Fair Value | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 91,832,000 | 94,400,000
Fair Value | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | $ 18,440,000 | $ 15,012,000

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