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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Common Class A [Member] Common Stock [Member] | Common Class A [Member] Treasury Stock [Member] | Common Class B [Member] Common Stock [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2014 | $ 666,718 | $ 697,760 | $ 376,353 | $ (6,424) | $ 620 | $ (401,712) | $ 121
Beginning Balance, Shares at Dec. 31, 2014 |  |  |  |  | 62,047 | (23,156) | 12,029
Shares awarded under stock compensation plans | 3,662 | 3,656 |  |  | $ 6 |  |
Shares awarded under stock compensation plans, shares |  |  |  |  | 518 |  |
Purchases of treasury stock | (34,483) |  |  |  |  | $ (34,483) |
Purchases of treasury stock, shares |  |  |  |  |  | (1,519) |
Income tax benefit associated with stock compensation plans | 1,888 | 1,888 |  |  |  |  |
Change in fair value of interest rate swap and rate cap agreements, net of tax expense of $205, $2,178 and $2,351 in 2015 and 2016 and 2017 respectively | 335 |  |  | 335 |  |  |
Pension actuarial income/loss net of tax expense (benefit) of $280, and $112, and $163 in 2015 and 2016 and 2017 respectively | 457 |  |  | 457 |  |  |
Restricted stock amortization | 9,814 | 9,814 |  |  |  |  |
Other, shares |  |  |  |  | 21 |  |
Net income (loss) | 86,311 |  | 86,311 |  |  |  |
Dividends declared | (5,654) |  | (5,654) |  |  |  |
Ending Balance at Dec. 31, 2015 | 729,048 | 713,118 | 457,010 | (5,632) | $ 626 | $ (436,195) | $ 121
Ending Balance, Shares at Dec. 31, 2015 |  |  |  |  | 62,586 | (24,675) | 12,029
Shares awarded under stock compensation plans | 27 | 23 |  |  | $ 4 |  |
Shares awarded under stock compensation plans, shares |  |  |  |  | 381 |  |
Purchases of treasury stock | (99,971) |  |  |  |  | $ (99,971) |
Purchases of treasury stock, shares |  |  |  |  |  | (5,588) |
Income tax expense associated with stock compensation plans | (2,611) | (2,611) |  |  |  |  |
Change in fair value of interest rate swap and rate cap agreements, net of tax expense of $205, $2,178 and $2,351 in 2015 and 2016 and 2017 respectively | 3,553 |  |  | 3,553 |  |  |
Pension actuarial income/loss net of tax expense (benefit) of $280, and $112, and $163 in 2015 and 2016 and 2017 respectively | (183) |  |  | (183) |  |  |
Restricted stock amortization | 11,165 | 11,165 |  |  |  |  |
Net income (loss) | 93,193 |  | 93,193 |  |  |  |
Dividends declared | (9,057) |  | (9,057) |  |  |  |
Ending Balance at Dec. 31, 2016 | 725,164 | 721,695 | 541,146 | (2,262) | $ 630 | $ (536,166) | $ 121
Ending Balance, Shares at Dec. 31, 2016 |  |  |  |  | 62,967 | (30,263) | 12,029
Shares awarded under stock compensation plans | 45 | 40 |  |  | $ 5 |  |
Shares awarded under stock compensation plans, shares |  |  |  |  | 490 |  |
Purchases of treasury stock | (37,347) |  |  |  |  | $ (37,347) |
Purchases of treasury stock, shares |  |  |  |  |  | (2,027) |
Change in fair value of interest rate swap and rate cap agreements, net of tax expense of $205, $2,178 and $2,351 in 2015 and 2016 and 2017 respectively | 3,835 |  |  | 3,835 |  |  |
Pension actuarial income/loss net of tax expense (benefit) of $280, and $112, and $163 in 2015 and 2016 and 2017 respectively | (266) |  |  | (266) |  |  |
Restricted stock amortization | 11,119 | 11,119 |  |  |  |  |
Net income (loss) | 92,983 |  | 92,983 |  |  |  |
Dividends declared | (8,773) |  | (8,773) |  |  |  |
Ending Balance at Dec. 31, 2017 | $ 786,760 | $ 732,854 | $ 625,356 | $ 1,307 | $ 635 | $ (573,513) | $ 121
Ending Balance, Shares at Dec. 31, 2017 |  |  |  |  | 63,457 | (32,290) | 12,029

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