. the company also expects that towerco ghana will build at least an additional 400 sites for both mtn ghana and other wireless operators in ghana over the next five years . the company expects to close on an initial tranche of towers in the first half of 2011 , subject to customary closing conditions . 6 . long-term obligations outstanding amounts under the company 2019s long-term financing arrangements consist of the following as of december 31 , ( in thousands ) : .