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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Statement [Abstract] |  |  |
Revenue | $ 306,120 | $ 506,639 | $ 608,326
Cost of revenue: |  |  |
Contract costs | 321,276 | 462,083 | 584,665
Gross (loss) profit | (15,156) | 44,556 | 23,661
General and administrative expenses | 16,256 | 17,409 | 11,555
Asset impairment | 7,202 | 3,200 | 0
Operating (loss) income | (38,614) | 23,947 | 12,106
Other income (expense): |  |  |
Interest expense | (165) | (37) | (237)
Interest income | 26 | 13 | 3
Other income (expense), net | 20 | (99) | (337)
Total other income (expense) | (119) | (123) | (571)
(Loss) income before income taxes | (38,733) | 23,824 | 11,535
Income tax (benefit) expense | (13,369) | 8,504 | 4,303
Net (loss) income | $ (25,364) | $ 15,320 | $ 7,232
Per share data: |  |  |
Basic earnings (loss) per share—common shareholders | $ (1.75) | $ 1.05 | $ 0.50
Diluted earnings (loss) per share—common shareholders | $ (1.75) | $ 1.05 | $ 0.50

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