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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Treasury Stock | Accumulated Other Comprehensive (Loss)/Income | Reclassifications Related to Funded Status of Pension | Reclassifications Related to Unrealized Gains on Available for Sale Securities
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2017 |  | $ 884,031 | $ 90,326 | $ 216,106 | $ 628,107 | $ (32,081) | $ (18,427) |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 26,163 |  |  | 26,163 |  |  |  |
Other comprehensive income (loss), net of tax |  | (6,973) |  |  |  |  | (6,973) |  |
Reclassification of tax effects from the Tax Act | ASU No. 2018-02 | [1] |  |  |  | 3,691 |  | (3,691) | $ (3,924) | $ 233
Cash dividends declared ($0.22 and $0.27 per share) |  | (7,669) |  |  | (7,669) |  |  |  |
Treasury stock issued for restricted awards (66,165 shares, net of 37,592 forfeitures) |  | (657) |  |  | (1,229) | 572 |  |  |
Recognition of restricted stock compensation expense |  | 512 |  | 512 |  |  |  |  |
Ending Balance at Mar. 31, 2018 |  | 895,407 | 90,326 | 216,618 | 649,925 | (31,509) | (29,953) |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Effect of new accounting pronouncement on Consolidated Financial Statements | ASU No. 2016-01 |  |  |  |  | 862 |  | (862) |  |
Beginning Balance at Dec. 31, 2018 |  | 935,761 | 90,326 | 210,345 | 701,819 | (43,622) | (23,107) |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Net income |  | 22,928 |  |  | 22,928 |  |  |  |
Other comprehensive income (loss), net of tax |  | 6,176 |  |  |  |  | 6,176 |  |
Cash dividends declared ($0.22 and $0.27 per share) |  | (9,317) |  |  | (9,317) |  |  |  |
Treasury stock issued for restricted awards (66,165 shares, net of 37,592 forfeitures) |  | (876) |  |  | 481 | (1,357) |  |  |
Repurchase of S&T Stock (313,904 shares) |  | (12,287) |  |  |  | (12,287) |  |  |
Recognition of restricted stock compensation expense |  | 604 |  | 604 |  |  |  |  |
Ending Balance at Mar. 31, 2019 |  | $ 943,156 | $ 90,326 | $ 210,949 | $ 716,078 | $ (57,266) | $ (16,931) |  |
[1] | Reclassification due to the adoption of ASU No. 2018-02, $(3,924) relates to funded status of pension and $233 relates to net unrealized gains on available-for-sale securities.

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