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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Capital in excess of par value | $ 483,560 |  | $ 498,702 |
Less treasury stock at cost | (318,063) |  | (1,026,117) |
Stock option exercises & restricted stock vestings | 64,717 | $ 45,115 |  |
Total Stockholders' Equity | 1,159,904 | 1,410,878 | 1,103,916 | $ 1,480,308
Capital in Excess of Par Value |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings | 60,771 | 43,287 |  |
Total Stockholders' Equity | 483,560 | 531,579 | 498,702 | 488,292
Treasury Stock |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings | 3,936 | 1,822 |  |
Total Stockholders' Equity | $ (318,063) | (827,253) | (1,026,117) | (738,558)
Reissuance of incorrectly accounted treasury shares | As previously reported |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Capital in excess of par value |  |  | 507,313 |
Less treasury stock at cost |  |  | (1,034,728) |
Stock option exercises & restricted stock vestings |  | 45,115 |  |
Total Stockholders' Equity |  | 1,410,878 | 1,103,916 | 1,480,308
Reissuance of incorrectly accounted treasury shares | As previously reported | Capital in Excess of Par Value |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings |  | 45,108 |  |
Total Stockholders' Equity |  | 539,055 |  | 493,947
Reissuance of incorrectly accounted treasury shares | As previously reported | Treasury Stock |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings |  | 1 |  |
Total Stockholders' Equity |  | (834,729) |  | (744,213)
Reissuance of incorrectly accounted treasury shares | Adjustment |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Capital in excess of par value |  |  | (8,611) |
Less treasury stock at cost |  |  | $ 8,611 |
Reissuance of incorrectly accounted treasury shares | Adjustment | Capital in Excess of Par Value |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings |  | (1,821) |  |
Total Stockholders' Equity |  | (7,476) |  | (5,655)
Reissuance of incorrectly accounted treasury shares | Adjustment | Treasury Stock |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |
Stock option exercises & restricted stock vestings |  | 1,821 |  |
Total Stockholders' Equity |  | $ 7,476 |  | $ 5,655

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