. 2012 restructuring program in 2012 , the company identified opportunities to improve its supply chain strategy by consolidating its three north american warehouses into one centralized warehouse , and lower costs and improve operating efficiencies through the termination of certain distributor agreements in europe , the closure of certain north american facilities and workforce reductions . as of december 31 , 2015 , the company has incurred net aggregate restructuring and impairment charges of $ 6