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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Jul. 29, 2017 | Jul. 30, 2016 | Jul. 25, 2015
REVENUES: |  |  |
Contract revenues | $ 3,066,880 | $ 2,672,542 | $ 2,022,312
EXPENSES: |  |  |
Costs of earned revenues, excluding depreciation and amortization | 2,404,734 | 2,083,579 | 1,593,250
General and administrative (including stock-based compensation expense of $20.8 million, $16.8 million, and $13.9 million, respectively) | 239,231 | 217,149 | 178,700
Depreciation and amortization | 147,906 | 124,940 | 96,044
Total | 2,791,871 | 2,425,668 | 1,867,994
Interest expense, net | (37,364) | (34,720) | (27,025)
Loss on debt extinguishment | 0 | (16,260) | 0
Other income, net | 12,780 | 10,433 | 8,291
Income before income taxes | 250,425 | 206,327 | 135,584
Provision (benefit) for income taxes: |  |  |
Current | 74,975 | 50,805 | 50,016
Deferred | 18,233 | 26,782 | 1,244
Total provision for income taxes | 93,208 | 77,587 | 51,260
Net income | $ 157,217 | $ 128,740 | $ 84,324
Earnings per common share: |  |  |
Basic earnings per common share (in dollars per share) | $ 5.01 | $ 3.98 | $ 2.48
Diluted earnings per common share (in dollars per share) | $ 4.92 | $ 3.89 | $ 2.41
Shares used in computing earnings per common share: |  |  |
Basic (in shares) | 31,351,367 | 32,315,636 | 34,045,481
Diluted (in shares) | 31,984,731 | 33,115,755 | 35,026,688

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