Allscripts Health SolutionsShares of Allscripts Health Solutions ( MDRX) plunged late Thursday after the company's first-quarter results fell far short of Wall Street expectations because of weak sales, elevated software development expenses and an unfavorable sales mix. The company reported non-GAAP earnings of 12 cents a share on revenue of $365.5 million for the March quarter. The average estimate of analysts polled by Thomson Reuters was for earnings of 24 cents a share on revenue of $387.7 million. Allscripts also lowered its outlook, announced that Chief Financial Officer Bill Davis is leaving the company, and disclosed a shake-up of its board with Phil Pead being terminated as chairman and three other directors resigning. The stock dropped 46% to $8.70 on after-hours volume of 5.3 million.