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Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Revenues: |  |
Product sales | $ 76,752 | $ 71,538
Services and rentals | 136,105 | 137,021
Total revenues | 212,857 | 208,559
Cost of revenues: |  |
Cost of product sales | 65,029 | 55,738
Cost of services and rentals | 99,938 | 94,790
Depreciation, amortization, and accretion | 23,040 | 19,671
Total cost of revenues | 188,007 | 170,199
Gross profit | 24,850 | 38,360
General and administrative expense | 33,420 | 33,228
Interest expense, net | 4,711 | 4,200
Other (income) expense, net | (2,598) | (2,279)
Income before taxes and discontinued operations | (10,683) | 3,211
Provision for income taxes | (4,593) | 1,111
Income before discontinued operations | (6,090) | 2,100
Income (loss) from discontinued operations, net of taxes | 0 | 0
Net income (loss) | (6,090) | 2,100
Net (income) attributable to noncontrolling interest | (844) | (797)
Net income attributable to TETRA stockholders | $ (6,934) | $ 1,303
Basic net income per common share: |  |
Income before discontinued operations attributable to TETRA stockholders | $ (0.09) | $ 0.02
Income (loss) from discontinued operations attributable to TETRA stockholders | $ 0.00 | $ 0.00
Net income attributable to TETRA stockholders | $ (0.09) | $ 0.02
Average shares outstanding | 78,306 | 77,671
Diluted net income per common share: |  |
Income before discontinued operations attributable to TETRA stockholders | $ (0.09) | $ 0.02
Income (loss) from discontinued operations attributable to TETRA stockholders | $ 0.00 | $ 0.00
Net income attributable to TETRA stockholders | $ (0.09) | $ 0.02
Average diluted shares outstanding | 78,306 | 78,395

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