In accordance with ASC 280, Segment Reporting (ASC 280), we have two reportable geographic segments: Turkey and Bulgaria. Summarized financial information concerning our geographic segments is shown in the following tables: Corporate Turkey Bulgaria Total (in thousands) For the year ended December 31, 2019 Total revenues $  $ 67,380 $  $ 67,380 Production  11,513 161 11,674 Transportation costs  5,101  5,101 Exploration, abandonment, and impairment   6,267 6,267 Seismic and other exploration  330  330 General and administrative 5,373 6,274 138 11,785 Depreciation, depletion and amortization 132 13,095  13,227 Accretion of asset retirement obligations  190 23 213 Total costs and expenses 5,505 36,503 6,589 48,597 Operating (loss) income (5,505 ) 30,877 (6,589 ) 18,783 Interest and other expense (8,450 ) (2,217 )  (10,667 ) Interest and other income 419 528  947 Loss on commodity derivative contracts  (966 )  (966 ) Foreign exchange gain (loss) 117 (4,626 ) (60 ) (4,569 ) (Loss) income before income taxes (13,419 ) 23,596 (6,649 ) 3,528 Income tax expense  (8,894 )  (8,894 ) Net loss (income) $ (13,419 ) $ 14,702 $ (6,649 ) $ (5,366 ) Total assets at December 31, 2019 $ 7,810 $ 127,986 $ 708 $ 136,504 Capital expenditures for the year ended December 31, 2019 $  $ 25,146 $ 5,537 $ 30,683 For the year ended December 31, 2018 Total revenues $  $ 70,789 $  $ 70,789 Production  10,649 120 10,769 Transportation costs  4,665  4,665 Exploration, abandonment, and impairment  401  401 Seismic and other exploration  488 1 489 General and administrative 9,222 5,344 153 14,719 Depreciation, depletion and amortization 142 13,917  14,059 Accretion of asset retirement obligations  151 23 174 Total costs and expenses 9,364 35,615 297 45,276 Operating (loss) income (9,364 ) 35,174 (297 ) 25,513 Interest and other expense (7,026 ) (3,022 )  (10,048 ) Interest and other income 184 897 1 1,082 Loss on commodity derivative contracts  (1,797 )  (1,797 ) Foreign exchange loss (351 ) (9,932 ) (9 ) (10,292 ) (Loss) income before income taxes (16,557 ) 21,320 (305 ) 4,458 Income tax expense  (9,674 )  (9,674 ) Net (loss) income $ (16,557 ) $ 11,646 $ (305 ) $ (5,216 ) Total assets at December 31, 2018 $ 8,358 $ 122,325 $ 1,917 $ 132,600 Capital expenditures for the year ended December 31, 2018 $  $ 23,517 $  $ 23,517