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COMPREHENSIVE EARNINGS (LOSS): (Tables) | 12 Months Ended
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Dec. 31, 2011
COMPREHENSIVE EARNINGS (LOSS): |
Schedule of accumulated other comprehensive earnings (loss): |
|  | Foreign |  | Unrealized Gain (Loss) on |  | Accumulated |
|  | Currency Translation Adjustment |  | Investments |  | Derivatives |  | Postretirement and Pension Benefits |  | Other Comprehensive Earnings (Loss) |
Balance at January 1, 2009 |  | $ | (14,292 | ) | $ | 191 |  | $ | 220 |  | $ | (1,360 | ) | $ | (15,241 | )
Unrealized gains (losses) |  | 1,183 |  | (709 | ) | 4,341 |  | 109 |  | 4,924 |
(Gains) losses reclassified to net earnings |  | — |  | — |  | (1,015 | ) | — |  | (1,015 | )
Tax effect |  | (118 | ) | 263 |  | (1,232 | ) | 23 |  | (1,064 | )
Net of tax amount |  | 1,065 |  | (446 | ) | 2,094 |  | 132 |  | 2,845 |
Balance at December 31, 2009 |  | (13,227 | ) | (255 | ) | 2,314 |  | (1,228 | ) | (12,396 | )
Unrealized gains (losses) |  | 856 |  | (1,179 | ) | 7,313 |  | (3,007 | ) | 3,983 |
(Gains) losses reclassified to net earnings |  | — |  | — |  | (2,651 | ) | — |  | (2,651 | )
Tax effect |  | 135 |  | 435 |  | (1,724 | ) | 1,005 |  | (149 | )
Net of tax amount |  | 991 |  | (744 | ) | 2,938 |  | (2,002 | ) | 1,183 |
Balance at December 31, 2010 |  | (12,236 | ) | (999 | ) | 5,252 |  | (3,230 | ) | (11,213 | )
Unrealized gains (losses) |  | (2,496 | ) | 1,030 |  | (397 | ) | (3,092 | ) | (4,955 | )
(Gains) losses reclassified to net earnings |  | — |  | — |  | (7,531 | ) | — |  | (7,531 | )
Tax effect |  | 46 |  | (382 | ) | 2,933 |  | 1,149 |  | 3,746 |
Net of tax amount |  | (2,450 | ) | 648 |  | (4,995 | ) | (1,943 | ) | (8,740 | )
Balance at December 31, 2011 |  | $ | (14,686 | ) | $ | (351 | ) | $ | 257 |  | $ | (5,173 | ) | $ | (19,953 | )

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