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Parent Company Only Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income | $ 7,899 | $ 7,785 | $ 8,246 | $ 8,813 | $ 10,484 | $ 10,357 | $ 9,767 | $ 9,473 | $ 32,743 | $ 40,081 | $ 33,719
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Net unrealized gains on trading securities |  |  |  |  |  |  |  |  | (328) | (1,888) | 451
Decrease (increase) in other assets |  |  |  |  |  |  |  |  | (6,242) | 1,072 | (3,079)
Increase in other liabilities |  |  |  |  |  |  |  |  | (3,846) | 3,610 | 4,613
Net Cash Provided By Operating Activities |  |  |  |  |  |  |  |  | 28,758 | 52,042 | 44,855
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |
Net Cash Used In Investing Activities |  |  |  |  |  |  |  |  | (168,680) | (368,736) | (452,675)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Dividends paid on preferred stock |  |  |  |  |  |  |  |  | (1,147) | 0 | 0
Purchase of treasury stock |  |  |  |  |  |  |  |  | (1,307) | (1,291) | (2,454)
Net proceeds from the issuance of preferred stock |  |  |  |  |  |  |  |  | 57,785 | 0 | 0
Net proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 3,257 | 1,423 | 0
Net Cash Provided By Financing Activities |  |  |  |  |  |  |  |  | 479,642 | 464,105 | 418,038
Net Increase in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | 339,720 | 147,411 | 10,218
Cash and Cash Equivalents, Beginning |  |  |  | 192,974 |  |  |  | 45,563 | 192,974 | 45,563 | 35,345
Cash and Cash Equivalents, Ending | 532,694 |  |  |  | 192,974 |  |  |  | 532,694 | 192,974 | 45,563
Parent Company |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 32,743 | 40,081 | 33,719
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | (18,197) | (27,580) | (24,031)
(Equity in undistributed) distributions in excess of net income of non–bank subsidiaries |  |  |  |  |  |  |  |  | 7,159 | (3,914) | 1,485
Net unrealized gains on trading securities |  |  |  |  |  |  |  |  | 31 | (24) | 0
Decrease (increase) in other assets |  |  |  |  |  |  |  |  | 21 | 177 | 872
Increase in other liabilities |  |  |  |  |  |  |  |  | 1,091 | 1,267 | 1,089
Net Cash Provided By Operating Activities |  |  |  |  |  |  |  |  | 22,848 | 10,007 | 13,134
Cash flows from investing activities |  |  |  |  |  |  |  |  |  |  |
Purchase of trading securities |  |  |  |  |  |  |  |  | (2,000) | (36) | (44)
Investment in non-bank subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | (400)
Outlays for business acquisition |  |  |  |  |  |  |  |  | (16,126) | 0 | 0
Investment in bank subsidiaries |  |  |  |  |  |  |  |  | (41,500) | 0 | 0
Net Cash Used In Investing Activities |  |  |  |  |  |  |  |  | (59,626) | (36) | (444)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Dividends paid on common stock |  |  |  |  |  |  |  |  | (10,981) | (10,358) | (10,237)
Dividends paid on preferred stock |  |  |  |  |  |  |  |  | (1,147) | 0 | 0
Purchase of treasury stock |  |  |  |  |  |  |  |  | (1,307) | (1,291) | (2,454)
Net proceeds from the issuance of preferred stock |  |  |  |  |  |  |  |  | 57,785 | 0 | 0
Net proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 3,257 | 1,423 | 0
Net advance (to) from subsidiary |  |  |  |  |  |  |  |  | (850) | 650 | (1,200)
Net Cash Provided By Financing Activities |  |  |  |  |  |  |  |  | 46,757 | (9,576) | (13,891)
Net Increase in Cash and Cash Equivalents |  |  |  |  |  |  |  |  | 9,979 | 395 | (1,201)
Cash and Cash Equivalents, Beginning |  |  |  | $ 750 |  |  |  | $ 355 | 750 | 355 | 1,556
Cash and Cash Equivalents, Ending | $ 10,729 |  |  |  | $ 750 |  |  |  | $ 10,729 | $ 750 | $ 355

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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=121586364&loc=d3e3255-108585 + Details
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