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v3.10.0.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands | Total | Class A | Class B Convertible | Additional Paid-in Capital | Treasury Stock | Accumulated Other Comprehensive Income (Loss) | Retained Earnings
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2015 | $ 455,281 | $ 16 | $ 2 | $ 534,651 | $ (475,184) | $ (7,408) | $ 403,204
Beginning Balance (in shares) at Dec. 31, 2015 |  | 15,771 | 2,035 |  | (6,405) |  |
Opening balance adjustment due to the adoption of ASU 2014-09 | ASU 2014-09 | 12,995 | $ 0 | $ 0 | 0 | $ 0 | 0 | 12,995
Net income | 92,239 | 0 | 0 | 0 | 0 | 0 | 92,239
Other comprehensive income (loss) | (3,521) | 0 | 0 | 0 | 0 | (3,521) | 0
Issuance of class A common stock under stock option plans | 1,663 | $ 0 | $ 0 | 1,663 | $ 0 | 0 | 0
Issuance of class A common stock under stock option plans (in shares) |  | 34 | 0 |  | 0 |  |
Tax effect of stock option exercises | 1,244 | $ 0 | $ 0 | 1,244 | $ 0 | 0 | 0
Share-based compensation expense | 11,817 | 0 | 0 | 11,817 | 0 | 0 | 0
Payment of taxes relating to net exercise of employee stock options | (3,739) | 0 | 0 | (3,739) | 0 | 0 | 0
Write-off of deferred tax assets relating to vested employee stock options that are no longer exercisable | (1,662) | 0 | 0 | (1,662) | 0 | 0 | 0
Ending Balance at Dec. 31, 2016 | 566,317 | $ 16 | $ 2 | 543,974 | $ (475,184) | (10,929) | 508,438
Ending Balance (in shares) at Dec. 31, 2016 |  | 15,805 | 2,035 |  | (6,405) |  |
Net income | 18,195 | $ 0 | $ 0 | 0 | $ 0 | 0 | 18,195
Other comprehensive income (loss) | 5,270 | 0 | 0 | 0 | 0 | 5,270 | 0
Issuance of class A common stock under stock option plans | 1,677 | $ 0 | $ 0 | 1,677 | $ 0 | 0 | 0
Issuance of class A common stock under stock option plans (in shares) |  | 12 | 0 |  | 0 |  |
Share-based compensation expense | 14,267 | $ 0 | $ 0 | 14,267 | $ 0 | 0 | 0
Ending Balance at Dec. 31, 2017 | 605,726 | $ 16 | $ 2 | 559,918 | $ (475,184) | (5,659) | 526,633
Ending Balance (in shares) at Dec. 31, 2017 |  | 15,817 | 2,035 |  | (6,405) |  |
Net income | 22,501 | $ 0 | $ 0 | 0 | $ 0 | 0 | 22,501
Other comprehensive income (loss) | (4,558) | 0 | 0 | 0 | 0 | (4,558) | 0
Issuance of class A common stock under stock option plans | 2,471 | $ 0 | $ 0 | 2,471 | $ 0 | 0 | 0
Issuance of class A common stock under stock option plans (in shares) |  | 20 | 0 |  | 0 |  |
Purchases of treasury stock | (110,977) | $ 0 | $ 0 | 0 | $ (110,977) | 0 | 0
Purchases of treasury stock (in shares) |  | 0 | 0 |  | (880) |  |
Share-based compensation expense | 14,568 | $ 0 | $ 0 | 14,568 | $ 0 | 0 | 0
Ending Balance at Dec. 31, 2018 | $ 529,731 | $ 16 | $ 2 | $ 576,957 | $ (586,161) | $ (10,217) | $ 549,134
Ending Balance (in shares) at Dec. 31, 2018 |  | 15,837 | 2,035 |  | (7,285) |  |

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