v2.4.0.6

MARKETABLE SECURITIES (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2011 investment | Dec. 31, 2010 | Dec. 31, 2009
Continuous unrealized loss position |  |  |
Fair Value | $ 24,631,000 | $ 73,723,000 |
Gross Unrealized Losses | (37,000) | (246,000) |
Proceeds from maturities and sales of available-for-sale marketable securities and related gross realized gains and losses |  |  |
Proceeds from maturities and sales of available-for-sale marketable securities | 600,149,000 | 768,650,000 | 293,629,000
Gross realized gains | 2,482,000 | 4,802,000 | 42,372,000
Gross realized losses | (41,000) | (19,000) | (12,414,000)
Net unrealized gains, net of tax, reclassified from other comprehensive income into earnings | 2,800,000 | 3,200,000 | 700,000
Number of investments in continuous unrealized loss position for less than 12 months | 12 |  |
Corporate debt securities |  |  |
Continuous unrealized loss position |  |  |
Fair Value | 12,920,000 | 34,552,000 |
Gross Unrealized Losses | (15,000) | (16,000) |
States of the U.S. and state political subdivisions |  |  |
Continuous unrealized loss position |  |  |
Fair Value | 11,711,000 | 39,171,000 |
Gross Unrealized Losses | $ (22,000) | $ (230,000) |

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