.2 million , $ 3.2 million and $ 6.5 million for the years ended december 31 , 2016 , 2015 and 2014 , respectively . in addition , due to the expiration of the statute of limitations in certain jurisdictions , the company reduced its liability for penalties and income tax-related interest expense related to uncertain tax positions during the years ended december 31 , 2016 , 2015 and 2014 by $ 3.4 million , $ 3.1 million and $ 9.9 million , respectively