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Consolidated Statements of Stockholders' Equity - 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 at Dec. 31, 2015 |  | $ 358,138 | [1] | $ 7,432 |  | $ 190,311 |  | $ 166,235 | $ (5,840) | $ 1,883 |  | $ (1,883) |
Beginning Balances, shares at Dec. 31, 2015 | [1],[2] |  |  | 15,270,659 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income |  | 44,675 |  |  |  |  |  | 44,675 |  |  |  |  |
Other comprehensive loss |  | 962 |  |  |  |  |  |  | 962 |  |  |  |
Dividends |  | (18,848) |  |  |  |  |  | (18,848) |  |  |  |  |
Proceeds from issuance of common stock, net of expenses | [3] | $ 57,360 |  | $ 467 |  | 56,893 |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 960,488 |  | 960,488 | [3] |  |  |  |  |  |  |  |
Stock Issued During The Period Value Retirement Savings Plan And Dividend Reinvestment Plan |  | $ 2,242 |  | $ 17 |  | 2,225 |  |  |  |  |  |  |
Stock Issued During The Period Shares Retirement Savings Plan And Dividend Reinvestment Plan |  |  |  | 36,253 |  |  |  |  |  |  |  |  |
Share-based compensation | [4],[5] | 1,557 |  | $ 19 |  | 1,538 |  |  |  |  |  |  |
Share-based compensation, shares | [4],[5] |  |  | 36,099 |  |  |  |  |  |  |  |  |
Treasury stock activities | [1] |  |  |  |  |  |  |  |  | 533 |  | (533) |
Ending Balances at Dec. 31, 2016 |  | 446,086 | [1] | $ 7,935 |  | 250,967 |  | 192,062 | (4,878) | 2,416 |  | (2,416) |
Ending Balances, shares at Dec. 31, 2016 | [1],[2] |  |  | 16,303,499 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income |  | 58,124 |  |  |  |  |  | 58,124 |  |  |  |  |
Other comprehensive loss |  | 606 |  |  |  |  |  |  | 606 |  |  |  |
Dividends |  | (21,045) |  |  |  |  |  | (21,045) |  |  |  |  |
Proceeds from issuance of common stock, net of expenses | [3] | (10) |  | $ 0 |  | (10) |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | [3] |  |  | 0 |  |  |  |  |  |  |  |  |
Stock Issued During The Period Value Retirement Savings Plan And Dividend Reinvestment Plan |  | 735 |  | $ 5 |  | 730 |  |  |  |  |  |  |
Stock Issued During The Period Shares Retirement Savings Plan And Dividend Reinvestment Plan |  |  |  | 10,771 |  |  |  |  |  |  |  |  |
Share-based compensation | [4],[5] | 1,798 |  | $ 15 |  | 1,783 |  |  |  |  |  |  |
Share-based compensation, shares | [4],[5] |  |  | 30,172 |  |  |  |  |  |  |  |  |
Treasury stock activities |  | 0 |  |  |  |  |  |  |  | 979 | [1] | (979) | [1]
Ending Balances at Dec. 31, 2017 |  | 486,294 | [1] | $ 7,955 |  | 253,470 |  | 229,141 | (4,272) | 3,395 |  | (3,395) |
Ending Balances, shares at Dec. 31, 2017 | [1],[2] |  |  | 16,344,442 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income |  | 56,580 |  |  |  |  |  | 56,580 |  |  |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification |  | (1,498) |  |  |  |  |  |  |  |  |  |  |
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect |  | (907) |  |  |  |  |  | 907 | (907) |  |  |  |
Other comprehensive loss |  | (1,534) |  |  |  |  |  |  | (1,534) |  |  |  |
Dividends |  | (23,600) |  |  |  |  |  | (23,600) |  |  |  |  |
Stock Issued During Period, Shares, Dividend Reinvestment Plan |  |  |  | 0 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Dividend Reinvestment Plan |  | (3) |  | $ 0 |  | (3) |  |  |  |  |  |  |
Proceeds from issuance of common stock, net of expenses |  | 0 |  |  |  |  |  |  |  |  |  |  |
Share-based compensation |  | 2,200 | [4],[5] | $ 16 |  | 2,184 | [4],[5] |  |  |  |  |  |
Share-based compensation, shares | [4],[5] |  |  | 34,103 |  |  |  |  |  |  |  |  |
Treasury stock activities |  |  |  |  |  |  |  |  |  | 459 |  | (459) |
Ending Balances at Dec. 31, 2018 |  | $ 518,439 | [1] | $ 7,971 |  | $ 255,651 |  | $ 261,530 | $ (6,713) | $ 3,854 |  | $ (3,854) |
Ending Balances, shares at Dec. 31, 2018 | [1],[2] |  |  | 16,378,545 |  |  |  |  |  |  |  |  |
[1] | Includes 97,053, 90,961 and 76,745 shares at December 31, 2018, 2017 and 2016, respectively, held in a Rabbi Trust related to our Non-Qualified Deferred Compensation Plan
[2] | 2,000,000 shares of preferred stock at $0.01 par value per share have been authorized. No shares have been issued or are outstanding; accordingly, no information has been included in the Statements of Stockholders’ Equity.
[3] | On September 22, 2016, we completed a public offering of 960,488 shares of our common stock at a price per share of $62.26. The net proceeds from the sale of common stock, after deducting underwriting commissions and expenses, were approximately $57.4 million.
[4] | Includes amounts for shares issued for directors’ compensation.
[5] | The shares issued under the SICP are net of shares withheld for employee taxes. For 2018, 2017 and 2016, we withheld 10,436, 10,269 and 12,031 shares, respectively, for taxes.

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