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Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Consolidated Statements of Comprehensive Income |  |
Revenue | $ 288,383 | $ 292,654
Operating expenses |  |
Cost of services (exclusive of depreciation and amortization presented separately below) | 208,232 | 211,895
Selling, general and administrative | 45,747 | 48,135
Depreciation and amortization | 10,555 | 10,116
Restructuring charges, net | 851 | 1,958
Impairment losses | 0 | 1,800
Total operating expenses | 265,385 | 273,904
Income from operations | 22,998 | 18,750
Other income (expense) |  |
Interest income | 669 | 760
Interest expense | (1,865) | (1,098)
Other income (expense), net | (808) | 258
Total other income (expense) | (2,004) | (80)
Income before income taxes | 20,994 | 18,670
Benefit from (provision for) income taxes | (2,391) | (1,853)
Net income | 18,603 | 16,817
Net income attributable to noncontrolling interest | (642) | (936)
Net income attributable to TeleTech stockholders | 17,961 | 15,881
Other comprehensive income (loss) |  |
Foreign currency translation adjustments | 3,134 | 8,751
Derivative valuation, gross | 3,390 | 11,671
Derivative valuation, tax effect | (1,210) | (4,574)
Other, net of tax | 162 | 345
Total other comprehensive income | 5,476 | 16,193
Total comprehensive income | 24,079 | 33,010
Comprehensive income attributable to noncontrolling interest | (552) | (948)
Comprehensive income attributable to TeleTech stockholders | $ 23,527 | $ 32,062
Weighted average shares outstanding |  |
Basic | 52,347 | 56,493
Diluted | 53,217 | 57,418
Net income per share attributable to TeleTech stockholders |  |
Basic | $ 0.34 | $ 0.28
Diluted | $ 0.34 | $ 0.28

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