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v3.10.0.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands | Total | Class A and B Common Stock [Member] | Additional Paid-in Capital [Member] | Purchase Price Of Excess Of Predecessor Basis, Net Of Tax [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income [Member] | Treasury Stock [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2015 | $ 647,840 | $ 419 | $ 174,285 | $ (15,458) | $ 660,758 | $ (178) | $ (171,986)
Beginning Balance (in shares) at Dec. 31, 2015 |  | 41,887,088 |  |  |  |  | (5,590,831)
Purchase of treasury shares | (100,000) |  |  |  |  |  | $ (100,000)
Purchase of treasury shares (in shares) |  |  |  |  |  |  | (2,672,227)
Stock tendered for payments of withholding taxes | (2,489) |  |  |  |  |  | $ (2,489)
Stock tendered for payments of withholding taxes (in shares) |  |  |  |  |  |  | (73,546)
Issuance of restricted stock awards, net of forfeitures |  |  | (8,838) |  |  |  | $ 8,838
Issuance of restricted stock awards, net of forfeitures (in shares) |  |  |  |  |  |  | 304,794
Share-based compensation expense | 8,479 |  | 8,479 |  |  |  |
Tax benefit of share-based compensation plans | (361) |  | (361) |  |  |  |
Net income | 74,805 |  |  |  | 74,805 |  |
Foreign currency translation adjustment | (95) |  |  |  |  | (95) |
Ending Balance at Dec. 31, 2016 | 628,179 | $ 419 | 173,565 | (15,458) | 735,563 | (273) | $ (265,637)
Ending Balance (in shares) at Dec. 31, 2016 |  | 41,887,088 |  |  |  |  | (8,031,810)
Stock tendered for payments of withholding taxes | (3,412) |  |  |  |  |  | $ (3,412)
Stock tendered for payments of withholding taxes (in shares) |  |  |  |  |  |  | (77,988)
Issuance of restricted stock awards, net of forfeitures |  |  | (10,427) |  |  |  | $ 10,427
Issuance of restricted stock awards, net of forfeitures (in shares) |  |  |  |  |  |  | 332,076
Share-based compensation expense | 9,873 |  | 9,873 |  |  |  |
Net income | 135,153 |  |  |  | 135,153 |  |
Foreign currency translation adjustment | 79 |  |  |  |  | 79 |
Ending Balance at Dec. 31, 2017 | 769,872 | $ 419 | 173,011 | (15,458) | 870,716 | (194) | $ (258,622)
Ending Balance (in shares) at Dec. 31, 2017 |  | 41,887,088 |  |  |  |  | (7,777,722)
Stock tendered for payments of withholding taxes | (4,270) |  |  |  |  |  | $ (4,270)
Stock tendered for payments of withholding taxes (in shares) |  |  |  |  |  |  | (87,381)
Issuance of restricted stock awards, net of forfeitures |  |  | (14,271) |  |  |  | $ 14,271
Issuance of restricted stock awards, net of forfeitures (in shares) |  |  |  |  |  |  | 434,020
Share-based compensation expense | 13,480 |  | 13,480 |  |  |  |
Net income | 201,740 |  |  |  | 201,740 |  |
Foreign currency translation adjustment | 12 |  |  |  |  | 12 |
Ending Balance at Dec. 31, 2018 | $ 980,834 | $ 419 | $ 172,220 | $ (15,458) | $ 1,072,456 | $ (182) | $ (248,621)
Ending Balance (in shares) at Dec. 31, 2018 |  | 41,887,088 |  |  |  |  | (7,431,083)

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