.0 million , $ 19.1 million and $ 22.3 million , respectively . 2022 non-core asset impairment charges 2014during the years ended december 31 , 2006 and 2005 respectively , the company recorded net losses associated with the sales of certain non-core towers and other assets , as well as impairment charges to write-down certain assets to net realizable value after an indicator of potential impairment had been identified . as a result , the company recorded net losses and impairments of approximately $ 2