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Parent Corporation Only Financial Statements (Details) - Condensed Statements of Cash Flows - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 19, 2021 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ 33,038 | $ 32,097 | $ 32,219 | $ 32,999 | $ 25,641 | $ 24,786 | $ 14,832 | $ 6,030 | $ 130,353 | $ 71,289 | $ 73,395
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Loss on equity securities, net |  |  |  |  |  |  |  |  |  | 373 | (202) | (294)
Amortization of subordinated debt issuance costs |  |  |  |  |  |  |  |  |  | 303 | 323 | 329
Decrease (increase) in other assets |  |  |  |  |  |  |  |  |  | 46,086 | (22,498) | (22,619)
(Decrease) increase in other liabilities |  |  |  |  |  |  |  |  |  | 10,526 | (4,174) | (2,785)
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 202,273 | 81,125 | 60,688
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |
Sales of available-for-sale securities |  |  |  |  |  |  |  |  |  |  | 19,624 | 183,728
Purchase of equity securities |  |  |  |  |  |  |  |  |  | 780 | 2,000 |
Sale of equity securities |  |  |  |  |  |  |  |  |  |  |  | 569
Net cash used in investing activities |  |  |  |  |  |  |  |  |  | (689,860) | (323,365) | (102,467)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid on preferred stock |  |  |  |  |  |  |  |  |  | 1,717 |  |
Cash dividends paid on common stock |  |  |  |  |  |  |  |  |  | (17,493) | (14,317) | (12,160)
Purchase of treasury stock |  |  |  |  |  |  |  |  |  | (9,401) | (911) | (12,643)
Proceeds from preferred stock offering | $ 110,900 |  |  |  |  |  |  |  |  | 110,927 |  |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  |  | 106 | 233 | 360
Net cash provided by financing activities |  |  |  |  |  |  |  |  |  | 449,367 | 344,513 | 70,896
Cash and cash equivalents at beginning of period |  |  |  |  | 303,756 |  |  |  | 201,483 | 303,756 | 201,483 | 172,366
Cash and cash equivalents at end of period |  | 265,536 |  |  |  | 303,756 |  |  |  | 265,536 | 303,756 | 201,483
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 130,353 | 71,289 | 73,395
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed earnings of subsidiary |  |  |  |  |  |  |  |  |  | (113,396) | (63,669) | (49,079)
Loss on equity securities, net |  |  |  |  |  |  |  |  |  | 55 |  | 38
Amortization of subordinated debt issuance costs |  |  |  |  |  |  |  |  |  | 303 | 323 | 329
Decrease (increase) in other assets |  |  |  |  |  |  |  |  |  | 50,590 | (50,001) |
(Decrease) increase in other liabilities |  |  |  |  |  |  |  |  |  | (287) | (391) | (1,509)
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  | 67,618 | (42,449) | 23,174
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |
Purchase of available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  | (2)
Sales of available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  | 23
Purchase of equity securities |  |  |  |  |  |  |  |  |  | (780) |  |
Sale of equity securities |  |  |  |  |  |  |  |  |  |  |  | 569
Repayment of short-term borrowing |  |  |  |  |  |  |  |  |  |  | (3,000) |
Capital infusion to subsidiary |  |  |  |  |  |  |  |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  | (780) | (3,000) | 590
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |
(Repayment of) proceeds from subordinated debt |  |  |  |  |  |  |  |  |  | (50,000) | 73,440 |
Cash dividends paid on preferred stock |  |  |  |  |  |  |  |  |  | (1,717) |  |
Cash dividends paid on common stock |  |  |  |  |  |  |  |  |  | (17,493) | (14,317) | (12,160)
Purchase of treasury stock |  |  |  |  |  |  |  |  |  | (9,401) | (911) | (12,643)
Proceeds from preferred stock offering |  |  |  |  |  |  |  |  |  | 110,927 |  |
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  |  | 106 | 233 | 360
Net cash provided by financing activities |  |  |  |  |  |  |  |  |  | 32,422 | 58,445 | (24,443)
Increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  |  | 99,260 | 12,996 | (679)
Cash and cash equivalents at beginning of period |  |  |  |  | $ 34,388 |  |  |  | $ 21,392 | 34,388 | 21,392 | 22,071
Cash and cash equivalents at end of period |  | $ 133,648 |  |  |  | $ 34,388 |  |  |  | $ 133,648 | $ 34,388 | $ 21,392

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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to preferred shareholders of the parent entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow for purchase of marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 + Details
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- Definition The cash outflow to acquire securities classified as trading securities and held for investment purposes. Excludes payments for trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585 + Details
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- Definition Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the sale, maturities, repayments and calls of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). + References No definition available. + Details
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- Definition Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26853-111562 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3151-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585 + Details
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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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- Definition The cash inflow from an obligation which places a lender in a lien position behind debt having a higher priority of repayment (senior loan) in liquidation of the entity's assets scheduled to be repaid within one year or in the normal operating cycle of the entity, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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- Definition The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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