Great Lakes Dredge & Dock (NASDAQ:GLDD) reported quarterly earnings of $0.29 per share which beat the analyst consensus estimate of $0.23 by 26.09 percent. The company reported quarterly sales of $202.774 million which missed the analyst consensus estimate of $209.025 million by 2.99 percent. This is a 11.58 percent increase over sales of $181.729 million the same period last year.