.2 million , $ 9.2 million and $ 2.6 million , respectively . during the years ended december 31 , 2008 , 2007 and 2006 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 impairment had been identified . as a result , the company recorded net losses and impairments of approximately $ 10.5 million , $ 7.1 million and $ 2