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Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Loss [Member] | Deferred Compensation [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balances (shares) at Dec. 31, 2014 | [1] |  | 14,588,711 |  |  |  |  |
Beginning Balances at Dec. 31, 2014 |  | $ 300,322 | $ 7,100 | $ 156,581 | $ 142,317 | $ (5,676) | $ 1,258 | $ (1,258)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net Income |  | 41,140 |  |  | 41,140 |  |  |
Other comprehensive loss |  | (164) |  |  |  | (164) |  |
Dividend declared ($1.1325 per share) |  | (17,222) |  |  | (17,222) |  |  |
Retirement savings plan and dividend reinvestment plan (shares) |  |  | 43,275 |  |  |  |  |
Retirement savings plan and dividend reinvestment plan |  | 2,235 | $ 21 | 2,214 |  |  |  |
Common stock issued in acquisition (shares) |  |  | 592,970 |  |  |  |  |
Common stock issued in acquisition |  | 30,165 | $ 289 | 29,876 |  |  |  |
Share-based compensation (shares) | [1],[2],[3] |  | 45,703 |  |  |  |  |
Share-based compensation and tax benefit | [2],[3] | 1,662 | $ 22 | 1,640 |  |  |  |
Treasury stock activities |  | 0 |  |  |  |  | 625 | (625)
Ending Balances (shares) at Dec. 31, 2015 | [1] |  | 15,270,659 |  |  |  |  |
Ending Balances at Dec. 31, 2015 |  | 358,138 | $ 7,432 | 190,311 | 166,235 | (5,840) | 1,883 | (1,883)
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net Income |  | 20,367 |  |  | 20,367 |  |  |
Other comprehensive loss |  | 89 |  |  |  | 89 |  |
Dividend declared ($0.2875 per share) and dividend reinvestment plan (shares) |  |  | 6,787 |  |  |  |  |
Dividend declared ($0.2875 per share) and dividend reinvestment plan |  | (4,057) | $ 3 | 377 | (4,437) |  |  |
Share-based compensation (shares) | [1],[2],[3] |  | 27,522 |  |  |  |  |
Share-based compensation and tax benefit | [2],[3] | (285) | $ 14 | (299) |  |  |  |
Treasury stock activities |  | 0 |  |  |  |  | 338 | (338)
Ending Balances (shares) at Mar. 31, 2016 | [1] |  | 15,304,968 |  |  |  |  |
Ending Balances at Mar. 31, 2016 |  | $ 374,252 | $ 7,449 | $ 190,389 | $ 182,165 | $ (5,751) | $ 2,221 | $ (2,221)
[1] | Includes 75,959 and 70,631 shares at March 31, 2016 and December 31, 2015, respectively, held in a Rabbi Trust related to our Deferred Compensation Plan.
[2] | Includes amounts for shares issued for Directors’ compensation.
[3] | The shares issued under the SICP are net of shares withheld for employee taxes. For the three months ended March 31, 2016, and for the year ended December 31, 2015, we withheld 12,031 and 12,620 shares, respectively, for taxes.

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