Comprising this increase was $15.9 million related to sales volume and product mix changes, $2.1 million for net cost reductions and $0.8 million for severance and other charges from the first half of 2009 that did not recur in the first half of 2010, partially offset by $2.3 million in reduced pricing, $1.2 million from the unfavorable effects of changes in foreign currency rates and $0.7 million