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STOCK REPURCHASE PROGRAM (Details) - USD ($) shares in Thousands, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 25, 2015 | Dec. 17, 2014 | Nov. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 16, 2014 | Oct. 30, 2014
Stock repurchase program |  |  |  |  |  |  |  |  |
Aggregate amount of share repurchases (in dollars) |  |  |  |  |  | $ 340,517 | $ 118,813 |  |
Common stock repurchased and retired |  |  |  |  | $ 13,887 |  |  |  |
Number of shares repurchased |  |  |  |  |  | 4,500 |  |  |
Stock Repurchase Program October 30, 2014 |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |
Share repurchases authorized amount |  |  |  |  |  |  |  |  | $ 350,000
Common stock repurchased and retired (in shares) |  |  | 190 |  |  |  |  |  |
Common stock repurchased and retired |  |  | $ 13,900 |  |  |  |  |  |
ASR Program |  |  |  |  |  |  |  |  |
Stock repurchase program |  |  |  |  |  |  |  |  |
Share repurchases authorized amount |  |  |  |  |  |  |  | $ 250,000 |
Aggregate amount of share repurchases (in dollars) |  | $ 250,000 |  |  |  |  |  |  |
Number of shares repurchased | 719 | 3,100 |  | 3,800 |  |  |  |  |

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