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UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Contract revenues | $ 448,776 | $ 339,676 | $ 916,870 | $ 685,287
Contract costs | 405,613 | 301,046 | 830,831 | 610,904
Gross profit | 43,163 | 38,630 | 86,039 | 74,383
Selling, general and administrative expenses | 33,944 | 29,168 | 66,931 | 57,448
Amortization of intangible assets | 735 | 119 | 1,469 | 236
Gain on sale of property and equipment | (926) | (1,014) | (1,397) | (2,065)
Income from operations | 9,410 | 10,357 | 19,036 | 18,764
Other income (expense): |  |  |  |
Interest expense | (1,168) | (783) | (2,373) | (1,504)
Other income, net | 582 | 25 | 1,328 | 274
Income before provision for income taxes | 8,824 | 9,599 | 17,991 | 17,534
Income tax expense | 2,466 | 2,764 | 5,013 | 5,055
Net income | 6,358 | 6,835 | 12,978 | 12,479
Less: net loss attributable to noncontrolling interest | (849) | 0 | (1,582) | 0
Net income attributable to MYR Group Inc. | $ 7,207 | $ 6,835 | $ 14,560 | $ 12,479
Income per common share attributable to MYR Group Inc.: |  |  |  |
- Basic (in dollars per share) | $ 0.43 | $ 0.42 | $ 0.88 | $ 0.76
- Diluted (in dollars per share) | $ 0.43 | $ 0.41 | $ 0.87 | $ 0.75
Weighted average number of common shares and potential common shares outstanding: |  |  |  |
- Basic (in shares) | 16,600 | 16,455 | 16,557 | 16,388
- Diluted (in shares) | 16,704 | 16,592 | 16,682 | 16,555
Net income | $ 6,358 | $ 6,835 | $ 12,978 | $ 12,479
Other comprehensive income (loss): |  |  |  |
Foreign currency translation adjustment | (123) | 16 | (200) | (1)
Other comprehensive income (loss) | (123) | 16 | (200) | (1)
Total comprehensive income | 6,235 | 6,851 | 12,778 | 12,478
Less: net loss attributable to noncontrolling interest | (849) | 0 | (1,582) | 0
Total comprehensive income attributable to MYR Group Inc. | $ 7,084 | $ 6,851 | $ 14,360 | $ 12,478

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