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Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 25, 2010 | Dec. 26, 2009
Consolidated Statements Of Income [Abstract] |  |  |
Revenue | $ 2,649,082 | $ 2,400,170 | $ 2,008,796
Investment income | 1,705 | 1,558 | 1,268
Costs and expenses: |  |  |
Purchased transportation | 2,007,102 | 1,824,308 | 1,503,520
Commissions to agents | 210,088 | 181,405 | 160,571
Other operating costs | 28,865 | 28,826 | 29,173
Insurance and claims | 42,766 | 49,334 | 45,918
Selling, general and administrative | 152,907 | 153,080 | 133,612
Depreciation and amortization | 25,814 | 24,804 | 23,528
Total costs and expenses | 2,467,542 | 2,261,757 | 1,896,322
Operating income | 183,245 | 139,971 | 113,742
Interest and debt expense | 3,112 | 3,623 | 4,030
Income before income taxes | 180,133 | 136,348 | 109,712
Income taxes | 67,188 | 49,766 | 39,762
Net income | 112,945 | 86,582 | 69,950
Less: Net loss attributable to noncontrolling interest | (62) | (932) | (445)
Net income attributable to Landstar System, Inc. and subsidiary | $ 113,007 | $ 87,514 | $ 70,395
Earnings per common share attributable to Landstar System, Inc. and subsidiary | $ 2.38 | $ 1.77 | $ 1.38
Diluted earnings per share attributable to Landstar System, Inc. and subsidiary | $ 2.38 | $ 1.77 | $ 1.37
Average number of shares outstanding: |  |  |
Earnings per common share | 47,444,000 | 49,523,000 | 51,095,000
Diluted earnings per share | 47,524,000 | 49,580,000 | 51,280,000
Dividends paid per common share | $ 0.21 | $ 0.19 | $ 0.17

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