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Condensed Unaudited Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Statement of Other Comprehensive Income [Abstract] |  |
Net income | $ 18,373 | $ 14,170
Foreign currency translation (losses) gains | (824) | 1,123
Unrealized gains on available for sale securities: |  |
Unrealized gains on available for sale securities, before tax | 359 | 416
Less: provision for income taxes | (138) | (170)
Unrealized gains on available for sale securities, net of tax | 221 | 246
Comprehensive income | 17,770 | 15,539
Comprehensive income (loss) attributable to non-controlling interests | 3 | (2)
Comprehensive income attributable to MasTec, Inc. | $ 17,767 | $ 15,541

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