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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) | Total | Cumulative Effect, Period of Adoption, Adjustment | Common Stock Outstanding | Common Stock | Value of Shares Held in Rabbi Trust at Cost | Deferred Compensation and Other Retirement Benefit Obligations | Additional Paid in Capital | Retained Earnings | Retained Earnings Cumulative Effect, Period of Adoption, Adjustment | Accumulated Other Comprehensive Income/(Loss)
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  |  |  | 34,377,388 |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method |  | $ (1,137,000) |  |  |  |  |  |  |  |  |
Net income |  | 26,751,000 |  |  |  |  |  |  | $ 26,751,000 |  |
Other comprehensive income |  | 31,559,000 |  |  |  |  |  |  |  |  | $ 31,559,000
Cash dividends declared per common share (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.46 |  |
Common dividend declared |  | (15,402,000) |  |  |  |  |  |  | $ (15,402,000) |  |
Stock based compensation |  | 850,000 |  |  |  |  |  | $ 850,000 |  |  |
Restricted stock awards issued, net of awards surrendered |  |  |  | 42,531 |  |  |  |  |  |  |
Restricted stock awards issued, net of awards surrendered |  | (1,132,000) |  |  | $ 1,000 |  |  | (1,133,000) |  |  |
Shares issued under direct stock purchase plan |  |  |  | 7,009 |  |  |  |  |  |  |
Shares issued under direct stock purchase plan |  | 560,000 |  |  | 0 |  |  | 560,000 |  |  |
Stock Repurchased During Period, Shares |  |  |  | (1,166,923) |  |  |  |  |  |  |
Stock Repurchased During Period, Value |  | (73,226,000) |  |  | (12,000) |  |  | (73,214,000) |  |  |
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits |  |  |  |  |  | $ 131,000 | $ (131,000) |  |  |  |
Increase (Decrease) in Deferred Compensation |  | 0 |  |  |  |  |  |  |  |  |
Period End Balance at Mar. 31, 2020 |  | 1,679,656,000 |  |  | 331,000 | (4,604,000) | 4,604,000 | 962,513,000 | 667,084,000 |  | 49,728,000
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses, Effect of Change in Method, net of tax. |  | 817,000 |  |  |  |  |  |  |  |  |
Off-Balance Sheet, Credit Loss, Liability, Change in Method, Credit Loss Expense (Reversal) |  | (1,000,000.0) |  |  |  |  |  |  |  |  |
Off-Balance Sheet, Credit Loss, Liability, Change in Method, Credit Loss Expense (Reversal), net of tax. |  | $ 736,000 |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  |  |  | 33,260,005 |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  | 32,965,692 |  | 32,965,692 |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020-01-31) | [1] |  | $ 1,553,000 |  |  |  |  |  |  | $ 1,553,000 |
Net income |  | $ 41,711,000 |  |  |  |  |  |  | $ 41,711,000 |  |
Other comprehensive income |  | (13,538,000) |  |  |  |  |  |  |  |  | (13,538,000)
Cash dividends declared per common share (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.48 |  |
Common dividend declared |  | (15,852,000) |  |  |  |  |  |  | $ (15,852,000) |  |
Proceeds from exercise of stock options, net of cash paid |  |  |  | 4,744 |  |  |  |  |  |  |
Stock Repurchased During Period, Value, as a result of Stock Options Exercised |  | (57,000) |  |  |  |  |  | (57,000) |  |  |
Stock based compensation |  | 1,150,000 |  |  |  |  |  | 1,150,000 |  |  |
Restricted stock awards issued, net of awards surrendered |  |  |  | 48,106 |  |  |  |  |  |  |
Restricted stock awards issued, net of awards surrendered |  | (1,220,000) |  |  | 1,000 |  |  | (1,221,000) |  |  |
Shares issued under direct stock purchase plan |  |  |  | 6,340 |  |  |  |  |  |  |
Shares issued under direct stock purchase plan |  | 492,000 |  |  |  |  |  | 492,000 |  |  |
Increase (Decrease) in Deferred Compensation and Other Retirement Benefits |  |  |  |  |  | (14,000) | 14,000 |  |  |  |
Increase (Decrease) in Deferred Compensation |  | 0 |  |  |  |  |  |  |  |  |
Period End Balance at Mar. 31, 2021 |  | $ 1,715,371,000 |  |  | $ 329,000 | $ (3,080,000) | $ 3,080,000 | $ 946,002,000 | $ 741,883,000 |  | $ 27,157,000
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding |  | 33,024,882 |  | 33,024,882 |  |  |  |  |  |  |
[1] | Represents adjustment needed to reflect the cumulative impact on retained earnings pursuant to the Company's adoption of Accounting Standards Update 2016-13. The adjustment presented includes $1.1 million ($817,000, net of tax) attributable to the change in accounting methodology for estimating the allowance for credit losses and $1.0 million ($736,000, net of tax) related to the reserve for unfunded commitments resulting from the Company's adoption of the standard. Amount shown in the table above is presented net of tax.

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