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Consolidated Statement of Stockholders' Equity - USD ($) | Total | Common Stock Outstanding | Paid-In Capital | Accumulated Other Comprehensive Income | Treasury Stock | Retained Earnings
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 57,998,000 | $ 71,000 | $ 25,526,000 | $ 3,187,000 | $ (26,748,000) | $ 55,962,000
Balance (in shares) at Dec. 31, 2012 |  | 7,130,804 |  |  |  |
Change in Stockholders' Equity: |  |  |  |  |  |
Net income | 6,866,000 |  |  |  |  | 6,866,000
Change in post retirement benefits, net of tax | 1,661,000 |  |  | 1,661,000 |  |
Change in interest rate swaps, net of tax | 24,000 |  |  | 24,000 |  |
Common stock issued (in shares) |  | 132,725 |  |  |  |
Common stock issued | 410,000 | $ 1,000 | 409,000 |  |  |
Excess tax benefit — equity transactions | 409,000 |  | 409,000 |  |  |
Purchase of treasury stock (in shares) |  | (36,329) |  |  |  |
Purchase of treasury stock | (334,000) |  |  |  | (334,000) |
Restricted stock issued (in shares) |  | 91,573 |  |  |  |
Restricted stock issued | 1,000 | $ 1,000 |  |  |  |
Share-based compensation | 413,000 |  | 413,000 |  |  |
Balance (in shares) at Dec. 31, 2013 |  | 7,318,773 |  |  |  |
Balance at Dec. 31, 2013 | 67,448,000 | $ 73,000 | 26,757,000 | 4,872,000 | (27,082,000) | 62,828,000
Change in Stockholders' Equity: |  |  |  |  |  |
Net income | 9,634,000 |  |  |  |  | 9,634,000
Change in post retirement benefits, net of tax | (2,056,000) |  |  | (2,056,000) |  |
Change in interest rate swaps, net of tax | 14,000 |  |  | 14,000 |  |
Common stock issued (in shares) |  | 186,060 |  |  |  |
Common stock issued | 328,000 | $ 2,000 | 326,000 |  |  |
Excess tax benefit — equity transactions | 311,000 |  | 311,000 |  |  |
Purchase of treasury stock (in shares) |  | (21,797) |  |  |  |
Purchase of treasury stock | (278,000) |  |  |  | (278,000) |
Restricted stock issued (in shares) |  | 75,976 |  |  |  |
Restricted stock issued | 1,000 | $ 1,000 |  |  |  |
Share-based compensation | 744,000 |  | 744,000 |  |  |
Balance (in shares) at Dec. 31, 2014 |  | 7,559,012 |  |  |  |
Balance at Dec. 31, 2014 | 76,146,000 | $ 76,000 | 28,138,000 | 2,830,000 | (27,360,000) | 72,462,000
Change in Stockholders' Equity: |  |  |  |  |  |
Net income | 12,050,000 |  |  |  |  | 12,050,000
Change in post retirement benefits, net of tax | (198,000) |  |  | (198,000) |  |
Change in interest rate swaps, net of tax | 13,000 |  |  | 13,000 |  |
Common stock issued (in shares) |  | 3,000 |  |  |  |
Common stock issued | 19,000 |  | 19,000 |  |  |
Excess tax benefit — equity transactions | 205,000 |  | 205,000 |  |  |
Purchase of treasury stock (in shares) |  | (12,141) |  |  |  |
Purchase of treasury stock | (287,000) |  |  |  | (287,000) |
Restricted stock issued (in shares) |  | 46,629 |  |  |  |
Restricted stock issued | 0 |  |  |  |  |
Share-based compensation | 785,000 |  | 785,000 |  |  |
Balance (in shares) at Dec. 31, 2015 |  | 7,596,500 |  |  |  |
Balance at Dec. 31, 2015 | $ 88,733,000 | $ 76,000 | $ 29,147,000 | $ 2,645,000 | $ (27,647,000) | $ 84,512,000

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