Segments Effective January 1, 2019, the Company substantially completed its Organizational Consolidation changing from a holding company that previously owned a portfolio of companies to an operating company structure that provides NET services and has an investment in Matrix. As a result, beginning January 1, 2019, the Companys chief operating decision maker reviews financial performance and allocates resources based on two segments as follows:  NET Services - which operates primarily under the brands LogistiCare and Circulation, is the largest manager of NET programs for state governments and MCOs in the U.S and includes the Companys activities for executive, accounting, finance, internal audit, tax, legal, certain strategic and development functions and the Companys captive insurance company.  Matrix Investment - which consists of a minority investment in Matrix, provides a broad array of assessment and care management services that improve health outcomes for individuals and financial performance for health plans. Matrixs national network of community-based clinicians deliver in-home services while its fleet of mobile health clinics provide community-based care with advance diagnostic capabilities. We have reclassified prior period segment amounts to conform to the current presentation, which are summarized as follows: Year Ended December 31, 2018 As Previously Reported Segment Reclassification Other Reclassification (Note 1) As Reported Service expense: NET Services $ 1,285,029 $ (426) $ (30,995) $ 1,253,608 Corporate and Other (426) 426   General and administrative: NET Services 14,247 31,851 30,995 77,093 Corporate and Other 31,851 (31,851)   Depreciation and amortization: NET Services 15,026 787  15,813 Corporate and Other 787 (787)   Operating income (loss): NET Services 56,488 (32,212)  24,276 Corporate and Other (32,212) 32,212   Year Ended December 31, 2017 As Previously Reported Segment Reclassification Other Reclassification (Note 1) As Reported Service expense: NET Services $ 1,227,426 $ (3,799) $ (26,416) $ 1,197,211 Corporate and Other (3,799) 3,799  General and administrative: NET Services 11,779 31,712 26,416 69,907 Corporate and Other 31,712 (31,712)   Depreciation and amortization: NET Services 13,275 343  13,618 Corporate and Other 343 (343)   Operating income (loss): NET Services 65,740 (28,256)  37,484 Corporate and Other (28,256) 28,256   The following table sets forth certain financial information from continuing operations attributable to the Companys business segments for the years ended December 31, 2019, 2018 and 2017. Year Ended December 31, 2019 NET Services Matrix Investment Total Service revenue, net $ 1,509,944 $  $ 1,509,944 Service expense 1,401,152  1,401,152 General and administrative expense 67,244  67,244 Depreciation and amortization 16,816  16,816 Operating income $ 24,732 $  $ 24,732 Equity in net loss of investee $  $ 29,685 $ 29,685 Investment in equity method investee $  $ 130,869 $ 130,869 Total assets $ 466,357 $ 130,869 $ 597,226 Year Ended December 31, 2018 NET Services Matrix Investment Total Service revenue, net $ 1,384,965 $  $ 1,384,965 Service expense 1,253,608  1,253,608 General and administrative expense 77,093  77,093 Asset impairment charge 14,175  14,175 Depreciation and amortization 15,813  15,813 Operating income $ 24,276 $  $ 24,276 Equity in net loss of investee $  $ 6,158 $ 6,158 Investment in equity method investee $  $ 161,503 $ 161,503 Total assets $ 401,091 $ 161,503 $ 562,594 Year Ended December 31, 2017 NET Services Matrix Investment Total Service revenue, net $ 1,318,220 $  $ 1,318,220 Service expense 1,197,211  1,197,211 General and administrative expense 69,907  69,907 Depreciation and amortization 13,618  13,618 Operating income $ 37,484 $  $ 37,484 Equity in net gain of investee $  $ (13,445) $ (13,445) Investment in equity method investee $  $ 169,699 $ 169,699 Total assets $ 356,539 $ 169,699 $ 526,238 Customer Information Of the Companys consolidated revenue, 12.7%, 12.6% and 13.8% was derived from one U.S. state Medicaid program for the years ended December 31, 2019, 2018 and 2017, respectively. In addition, substantially all of the Companys revenues are generated from domestic governmental agencies or entities that contract with governmental agencies.