Management evaluates performance and allocates resources based on the operating income of the reportable segments, which includes an allocation of corporate expenses directly attributable to the specific segment and includes revenues and all other costs directly attributable to the specific segment. Segment assets are not reviewed by the companys chief operating decision maker and therefore are not disclosed below (amounts in millions). For the Year Ended December 31, 2017 Home Health Hospice Personal Care Other Total Net service revenue $ 1,101.8 $ 371.0 $ 60.9 $  $ 1,533.7 Cost of service, excluding depreciation and amortization 670.9 184.8 45.0  900.7 General and administrative expenses 278.4 76.6 13.6 113.7 482.3 Provision for doubtful accounts 17.9 5.9 1.3  25.1 Depreciation and amortization 3.5 0.9 0.2 12.5 17.1 Securities Class Action Lawsuit settlement, net    28.7 28.7 Asset impairment charge 1.3    1.3 Operating expenses 972.0 268.2 60.1 154.9 1,455.2 Operating income (loss) $ 129.8 $ 102.8 $ 0.8 $ (154.9 ) $ 78.5 For the Year Ended December 31, 2016 Home Health Hospice Personal Care Other Total Net service revenue $ 1,085.5 $ 316.0 $ 35.9 $  $ 1,437.4 Cost of service, excluding depreciation and amortization 643.7 163.1 26.3  833.1 General and administrative expenses 283.4 70.2 7.9 141.9 503.4 Provision for doubtful accounts 13.8 5.5 0.2  19.5 Depreciation and amortization 6.0 1.3  12.4 19.7 Asset impairment charge    4.4 4.4 Operating expenses 946.9 240.1 34.4 158.7 1,380.1 Operating income (loss) $ 138.6 $ 75.9 $ 1.5 $ (158.7 ) $ 57.3 For the Year Ended December 31, 2015 Home Health Hospice Personal Care Other Total Net service revenue $ 1,005.1 $ 275.4 $  $  $ 1,280.5 Cost of service, excluding depreciation and amortization 584.2 141.7   725.9 General and administrative expenses 263.2 62.7  126.5 452.4 Provision for doubtful accounts 12.2 1.9   14.1 Depreciation and amortization 5.2 1.4  13.4 20.0 Asset impairment charge    77.3 77.3 Operating expenses 864.8 207.7  217.2