6 . Segment Information Our operations involve servicing patients through our two reportable business segments: home health and hospice. Our home health segment delivers a wide range of services in the homes of individuals who may be recovering from surgery, have a chronic disability or terminal illness or need assistance with the essential activities of daily living. Our hospice segment provides palliative care and comfort to terminally ill patients and their families. The  other  column in the following tables consist s of costs relating to corporate support functions that are not directly attributable to a specific segment. M anagement evaluates performance and allocates resources based on the operating income of the reportable segments, which includes an allocation of corporate expenses directly attribu table to the specific segment and includes revenues and all other costs directly attributable to the specific segment . Segment assets are not reviewed by the company's chief operating decision maker and therefore are not disclosed below (amounts in millions). For the Three-Month Period Ended March 31, 2015 Home Health Hospice Other Total Net service revenue $ 241.4 $ 60.2 $ 0.0 $ 301.6 Cost of service, excluding depreciation and amortization 138.7 32.3 0.0 171.0 General and administrative expenses 62.8 14.4 26.8 104.0 Provision for doubtful accounts 2.6 0.4 0.0 3.0 Depreciation and amortization 1.5 0.4 4.6 6.5 Asset impairment charge 0.0 0.0 75.2 75.2 Operating expenses 205.6 47.5 106.6 359.7 Operating income (loss) $ 35.8 $ 12.7 $ (106.6) $ (58.1) For the Three-Month Period Ended March 31, 2014 Home Health Hospice Other Total Net service revenue $ 236.7 $ 62.0 $ 0.0 $ 298.7 Cost of service, excluding depreciation and amortization 144.0 33.0 0.0 177.0 General and administrative expenses 76.0 16.3 34.0 126.3 Provision for doubtful accounts 4.1 0.8 0.0 4.9 Depreciation and amortization 2.5 0.5 4.9 7.9 Asset impairment charge 1.2 1.0 0.0 2.2 Operating expenses 227.8 51.6 38.9 318.3 Operating income (loss) $ 8.9