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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY - USD ($) | Total | Preferred Stock | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Treasury Stock
--- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2018 | $ 650,672,000 | $ 10,438,000 | $ 361,000 | $ 546,849,000 | $ 102,522,000 | $ (9,498,000) |
Beginning balance, shares at Dec. 31, 2018 |  | 10,438 | 36,343,239 |  |  |  |
Net income | 12,597,000 |  |  |  | 12,597,000 |  |
Other comprehensive income (loss), net of tax | 4,519,000 |  |  |  |  | 4,519,000 |
Issuance of common stock upon exercise of stock options | 636,000 |  | $ 1,000 | 635,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 50,662 |  |  |  |
Restricted stock activity, shares |  |  | (8,500) |  |  |  |
Issuance of common stock in connection with employee stock purchase plan | 291,000 |  |  | 291,000 |  |  |
Issuance of common stock in connection with employee stock purchase plan, shares |  |  | 12,743 |  |  |  |
Cumulative-effect adjustment (ASU 2016-01) |  |  |  |  | 1,440,000 | (1,440,000) |
Cash dividends declared on preferred stock | (196,000) |  |  |  | (196,000) |  |
Share-based compensation expense | 230,000 |  |  | 230,000 |  |  |
Ending balance at Mar. 31, 2019 | 668,749,000 | $ 10,438,000 | $ 362,000 | 548,005,000 | 116,363,000 | (6,419,000) |
Ending balance, shares at Mar. 31, 2019 |  | 10,438 | 36,398,144 |  |  |  |
Beginning balance at Dec. 31, 2018 | 650,672,000 | $ 10,438,000 | $ 361,000 | 546,849,000 | 102,522,000 | (9,498,000) |
Beginning balance, shares at Dec. 31, 2018 |  | 10,438 | 36,343,239 |  |  |  |
Net income | 41,150,000 |  |  |  |  |  |
Other comprehensive income (loss), net of tax | 11,899,000 |  |  |  |  |  |
Cumulative-effect adjustment (ASU 2016-01) | (1,440,000) |  |  |  |  |  |
Ending balance at Sep. 30, 2019 | 735,866,000 | $ 10,438,000 | $ 378,000 | 579,564,000 | 144,525,000 | 961,000 |
Ending balance, shares at Sep. 30, 2019 |  | 10,438 | 38,169,126 |  |  |  |
Beginning balance at Dec. 31, 2018 | 650,672,000 | $ 10,438,000 | $ 361,000 | 546,849,000 | 102,522,000 | (9,498,000) |
Beginning balance, shares at Dec. 31, 2018 |  | 10,438 | 36,343,239 |  |  |  |
Ending balance at Dec. 31, 2019 | 750,115,000 | $ 10,438,000 | $ 379,000 | 580,965,000 | 159,033,000 | (700,000) |
Ending balance, shares at Dec. 31, 2019 |  | 10,438 | 38,256,500 |  |  |  |
Beginning balance at Mar. 31, 2019 | 668,749,000 | $ 10,438,000 | $ 362,000 | 548,005,000 | 116,363,000 | (6,419,000) |
Beginning balance, shares at Mar. 31, 2019 |  | 10,438 | 36,398,144 |  |  |  |
Net income | 13,211,000 |  |  |  | 13,211,000 |  |
Other comprehensive income (loss), net of tax | 5,071,000 |  |  |  |  | 5,071,000 |
Issuance of common stock upon exercise of stock options | 1,669,000 |  | $ 1,000 | 1,668,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 116,048 |  |  |  |
Issuance of common stock due to business combination,net of issuance costs | 28,892,000 |  | $ 15,000 | 28,877,000 |  |  |
Issuance of common stock due to business combination, net of issuance costs, shares |  |  | 1,464,558 |  |  |  |
Restricted stock activity, shares |  |  | 136,469 |  |  |  |
Cash dividends declared on preferred stock | (195,000) |  |  |  | (195,000) |  |
Share-based compensation expense | 278,000 |  |  | 278,000 |  |  |
Ending balance at Jun. 30, 2019 | 717,675,000 | $ 10,438,000 | $ 378,000 | 578,828,000 | 129,379,000 | (1,348,000) |
Ending balance, shares at Jun. 30, 2019 |  | 10,438 | 38,115,219 |  |  |  |
Net income | 15,342,000 |  |  |  | 15,342,000 |  |
Other comprehensive income (loss), net of tax | 2,309,000 |  |  |  |  | 2,309,000 |
Issuance of common stock upon exercise of stock options | 54,000 |  |  | 54,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 3,472 |  |  |  |
Issuance cost in connection with business combination | (157,000) |  |  | (157,000) |  |  |
Restricted stock activity, shares |  |  | 36,350 |  |  |  |
Issuance of common stock in connection with employee stock purchase plan | 289,000 |  |  | 289,000 |  |  |
Issuance of common stock in connection with employee stock purchase plan, shares |  |  | 14,085 |  |  |  |
Cash dividends declared on preferred stock | (196,000) |  |  |  | (196,000) |  |
Cash dividends declared on common stock ($0.03 per share) | 0 |  |  |  |  |  |
Share-based compensation expense | 550,000 |  |  | 550,000 |  |  |
Ending balance at Sep. 30, 2019 | 735,866,000 | $ 10,438,000 | $ 378,000 | 579,564,000 | 144,525,000 | 961,000 |
Ending balance, shares at Sep. 30, 2019 |  | 10,438 | 38,169,126 |  |  |  |
Net income | 15,852,000 |  |  |  | 15,852,000 |  |
Other comprehensive income (loss), net of tax | (1,661,000) |  |  |  |  | (1,661,000) |
Issuance of common stock upon exercise of stock options | 787,000 |  |  | 787,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 71,029 |  |  |  |
Restricted stock activity |  |  | $ 1,000 | (1,000) |  |  |
Restricted stock activity, shares |  |  | 16,345 |  |  |  |
Cash dividends declared on preferred stock | (196,000) |  |  |  | (196,000) |  |
Cash dividends declared on common stock ($0.03 per share) | (1,148,000) |  |  |  | (1,148,000) |  |
Share-based compensation expense | 615,000 |  |  | 615,000 |  |  |
Ending balance at Dec. 31, 2019 | 750,115,000 | $ 10,438,000 | $ 379,000 | 580,965,000 | 159,033,000 | (700,000) |
Ending balance, shares at Dec. 31, 2019 |  | 10,438 | 38,256,500 |  |  |  |
Net income | 2,966,000 |  |  |  | 2,966,000 |  |
Other comprehensive income (loss), net of tax | 11,048,000 |  |  |  |  | 11,048,000 |
Issuance of common stock upon exercise of stock options | 677,000 |  | $ 1,000 | 676,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 55,402 |  |  |  |
Restricted stock activity, shares |  |  | 174,036 |  |  |  |
Issuance of common stock in connection with employee stock purchase plan | 268,000 |  |  | 268,000 |  |  |
Issuance of common stock in connection with employee stock purchase plan, shares |  |  | 15,569 |  |  |  |
Cash dividends declared on preferred stock | (196,000) |  |  |  | (196,000) |  |
Cash dividends declared on common stock ($0.03 per share) | (1,151,000) |  |  |  | (1,151,000) |  |
Repurchase of common stock | (1,668,000) |  |  |  |  |  | $ (1,668,000)
Repurchase of common stock, shares |  |  | (118,486) |  |  |  |
Share-based compensation expense | 608,000 |  |  | 608,000 |  |  |
Ending balance at Mar. 31, 2020 | 762,667,000 | $ 10,438,000 | $ 380,000 | 582,517,000 | 160,652,000 | 10,348,000 | (1,668,000)
Ending balance, shares at Mar. 31, 2020 |  | 10,438 | 38,383,021 |  |  |  |
Beginning balance at Dec. 31, 2019 | 750,115,000 | $ 10,438,000 | $ 379,000 | 580,965,000 | 159,033,000 | (700,000) |
Beginning balance, shares at Dec. 31, 2019 |  | 10,438 | 38,256,500 |  |  |  |
Net income | 25,176,000 |  |  |  |  |  |
Other comprehensive income (loss), net of tax | 20,024,000 |  |  |  |  |  |
Ending balance at Sep. 30, 2020 | 794,696,000 | $ 10,438,000 | $ 383,000 | 586,057,000 | 180,162,000 | 19,324,000 | (1,668,000)
Ending balance, shares at Sep. 30, 2020 |  | 10,438 | 38,568,916 |  |  |  |
Beginning balance at Mar. 31, 2020 | 762,667,000 | $ 10,438,000 | $ 380,000 | 582,517,000 | 160,652,000 | 10,348,000 | (1,668,000)
Beginning balance, shares at Mar. 31, 2020 |  | 10,438 | 38,383,021 |  |  |  |
Net income | 9,139,000 |  |  |  | 9,139,000 |  |
Other comprehensive income (loss), net of tax | 9,685,000 |  |  |  |  | 9,685,000 |
Issuance of common stock upon exercise of stock options | 56,000 |  |  | 56,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 5,196 |  |  |  |
Restricted stock activity |  |  | $ 1,000 | (1,000) |  |  |
Cash dividends declared on preferred stock | (195,000) |  |  |  | (195,000) |  |
Cash dividends declared on common stock ($0.03 per share) | (1,152,000) |  |  |  | (1,152,000) |  |
Share-based compensation expense | 735,000 |  |  | 735,000 |  |  |
Ending balance at Jun. 30, 2020 | 780,935,000 | $ 10,438,000 | $ 381,000 | 583,307,000 | 168,444,000 | 20,033,000 | (1,668,000)
Ending balance, shares at Jun. 30, 2020 |  | 10,438 | 38,388,217 |  |  |  |
Net income | 13,071,000 |  |  |  | 13,071,000 |  |
Other comprehensive income (loss), net of tax | (709,000) |  |  |  |  | (709,000) |
Issuance of common stock upon exercise of stock options | 1,815,000 |  | $ 1,000 | 1,814,000 |  |  |
Issuance of common stock upon exercise of stock options, shares |  |  | 165,375 |  |  |  |
Restricted stock activity, shares |  |  | (5,886) |  |  |  |
Issuance of common stock in connection with employee stock purchase plan | 269,000 |  | $ 1,000 | 268,000 |  |  |
Issuance of common stock in connection with employee stock purchase plan, shares |  |  | 21,210 |  |  |  |
Cash dividends declared on preferred stock | (196,000) |  |  |  | (196,000) |  |
Cash dividends declared on common stock ($0.03 per share) | (1,157,000) |  |  |  | (1,157,000) |  |
Share-based compensation expense | 668,000 |  |  | 668,000 |  |  |
Ending balance at Sep. 30, 2020 | $ 794,696,000 | $ 10,438,000 | $ 383,000 | $ 586,057,000 | $ 180,162,000 | $ 19,324,000 | $ (1,668,000)
Ending balance, shares at Sep. 30, 2020 |  | 10,438 | 38,568,916 |  |  |  |

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