Consolidated Statements of Income Unaudited (USD $)
3 Months Ended 9 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Apr. 30, 2013
Apr. 30, 2012
Consolidated Statements of Income Unaudited [Abstract]        
Revenue $ 32,218,923 $ 36,011,087 $ 105,192,174 $ 118,496,292
Cost of professional services and other direct operating expenses 11,376,594 13,560,046 37,024,544 41,906,831
Subcontract costs 6,160,917 5,971,336 18,587,985 24,671,421
Administrative and indirect operating expenses 10,766,068 10,967,127 33,107,200 33,796,454
Marketing and related costs 3,337,573 4,311,887 10,381,108 12,137,894
Depreciation and amortization 622,208 626,568 1,805,975 1,502,607
(Loss) income from operations (44,437) 574,123 4,285,362 4,481,085
Interest expense (64,475) (100,554) (249,581) (264,530)
Interest income 77,573 54,771 188,685 86,637
Other (expense) income (34,289) 48,063 (20,863) 168,586
Gain on sale of assets 63,422 0 63,422 0
Net foreign exchange loss (23,737) (73,059) (138,526) (199,908)
(Loss) income before income tax provision (25,943) 503,344 4,128,499 4,271,870
Income tax provision (benefit) 80,732 (277,775) 1,760,936 782,409
Net (loss) income (106,675) 781,119 2,367,563 3,489,461
Net (loss) attributable to noncontrolling interests (333,919) (725,178) (654,544) (1,770,239)
Net (loss) income attributable to Ecology and Environment, Inc. $ (440,594) $ 55,941 $ 1,713,019 $ 1,719,222
Net (loss) income per common share: basic and diluted (in dollars per share) $ (0.10) $ 0.01 $ 0.40 $ 0.41
Weighted average common shares outstanding: basic and diluted (in shares) 4,251,200 4,245,059 4,247,150 4,230,204