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QUARTERLY FINANCIAL DATA (UNAUDITED) (QUARTERLY FINANCIALS TABLE) (DETAILS) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
QUARTERLY FINANCIAL DATA (UNAUDITED) [ABSTRACT] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 295,261 | $ 286,268 | $ 288,798 | $ 292,654 | $ 300,538 | $ 304,235 | $ 293,636 | $ 280,979 | $ 1,162,981 | $ 1,179,388 | $ 1,094,906
Cost of services | (212,021) | (201,766) | (209,121) | (211,895) | (218,088) | (220,795) | (210,358) | (199,121) | (834,803) | (848,362) | (789,697)
Selling, general and administrative | (44,945) | (43,845) | (45,709) | (48,135) | (50,273) | (43,445) | (47,283) | (47,801) | (182,634) | (188,802) | (165,812)
Depreciation and amortization | (10,126) | (10,695) | (10,229) | (10,116) | (10,061) | (11,807) | (11,423) | (11,598) | (41,166) | (44,889) | (50,218)
Restructuring charges, net | (2,181) | (2,440) | (16,296) | (1,958) | (1,353) | (1,616) | 57 | (739) | (22,875) | (3,651) | (13,476)
Impairment losses | 0 | (161) | (997) | (1,800) |  |  |  | (230) | (2,958) | (230) | (1,958)
Income from operations | 25,988 | 27,361 | 6,446 | 18,750 | 20,763 | 26,572 | 24,629 | 21,490 | 78,545 | 93,454 | 73,745
Other income (expense) | (1,881) | (1,252) | (1,470) | (80) | 279 | (633) | (1,276) | (270) | (4,683) | (1,900) | 8,224
Benefit from (provision for) income taxes | 2,969 | (3,611) | (1,272) | 1,853 | 3,797 | (496) | 129 | 9,849 | 61 | (13,279) | (28,431)
Net income attributable to noncontrolling interest | 756 | 1,291 | 925 | 936 | 1,132 | 1,064 | 1,007 | 898 | (3,908) | (4,101) | (3,664)
Net income attributable to TeleTech stockholders | $ 20,382 | $ 28,429 | $ 5,323 | $ 15,881 | $ 16,113 | $ 25,371 | $ 22,217 | $ 10,473 | $ 70,015 | $ 74,174 | $ 49,874
Weighted average shares outstanding |  |  |  |  |  |  |  |  |  |  |
Basic | 53,262 | 54,093 | 55,125 | 56,493 | 56,309 | 56,476 | 56,713 | 57,190 | 54,738 | 56,669 | 60,361
Diluted | 54,196 | 54,905 | 55,712 | 57,418 | 57,500 | 57,748 | 57,974 | 58,797 | 55,540 | 57,963 | 61,792
Net income per share attributable to TeleTech stockholders |  |  |  |  |  |  |  |  |  |  |
Basic | $ 0.38 | $ 0.53 | $ 0.10 | $ 0.28 | $ 0.29 | $ 0.45 | $ 0.39 | $ 0.18 | $ 1.28 | $ 1.31 | $ 0.83
Diluted | $ 0.38 | $ 0.52 | $ 0.10 | $ 0.28 | $ 0.28 | $ 0.44 | $ 0.38 | $ 0.18 | $ 1.26 | $ 1.28 | $ 0.81

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