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COMPREHENSIVE EARNINGS (LOSS): (Tables) | 12 Months Ended
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Dec. 31, 2012
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, 2010 |  | $ | (13,227 | ) | $ | (255 | ) | $ | 2,314 |  | $ | (1,228 | ) | $ | (12,396 | )
Unrealized gains (losses) |  | 856 |  | (1,179 | ) | 7,313 |  | (3,135 | ) | 3,855 |
(Gains) losses reclassified to net earnings |  | — |  | — |  | (2,651 | ) | 128 |  | (2,523 | )
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 | ) | (3,593 | ) | (5,456 | )
(Gains) losses reclassified to net earnings |  | — |  | — |  | (7,531 | ) | 501 |  | (7,030 | )
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 | )
Unrealized gains (losses) |  | 1,303 |  | 1,980 |  | (339 | ) | 1,066 |  | 4,010 |
(Gains) losses reclassified to net earnings |  | — |  | — |  | (243 | ) | 1,036 |  | 793 |
Tax effect |  | (23 | ) | (721 | ) | 214 |  | (767 | ) | (1,297 | )
Net of tax amount |  | 1,280 |  | 1,259 |  | (368 | ) | 1,335 |  | 3,506 |
Balance at December 31, 2012 |  | $ | (13,406 | ) | $ | 908 |  | $ | (111 | ) | $ | (3,838 | ) | $ | (16,447 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669686-108580 + Details
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