A reconciliation from segment level financial information to the consolidated statement of operations is provided in the table below ($ in thousands): Three Months Ended June 30, 2020 Pressure Pumping All Other Total Service revenue $ 103,815 $ 2,294 $ 106,109 Adjusted EBITDA $ 34,030 $ (8,620 ) $ 25,410 Depreciation and amortization $ 38,910 $ 1,263 $ 40,173 Capital expenditures $ 10,034 $ 1,846 $ 11,880 Total assets at June 30, 2020 $ 1,052,915 $ 40,687 $ 1,093,602 Three Months Ended June 30, 2019 Pressure Pumping All Other Total Service revenue $ 515,867 $ 13,627 $ 529,494 Adjusted EBITDA $ 131,187 $ (4,625 ) $ 126,562 Depreciation and amortization $ 34,023 $ 1,459 $ 35,482 Goodwill at December 31, 2019 $ 9,425 $  $ 9,425 Capital expenditures $ 156,542 $ 4,677 $ 161,219 Total assets at December 31, 2019 $ 1,381,811 $ 54,300 $ 1,436,111 Six Months Ended June 30, 2020 Pressure Pumping All Other Total Service revenue $ 490,735 $ 10,443 $ 501,178 Adjusted EBITDA $ 112,696 $ (12,362 ) $ 100,334 Depreciation and amortization $ 77,879 $ 2,498 $ 80,377 Capital expenditures $ 49,301 $ 2,674 $ 51,975 Total assets at June 30, 2020 $ 1,052,915 $ 40,687 $ 1,093,602 Six Months Ended June 30, 2019 Pressure Pumping All Other Total Service revenue $ 1,047,931 $ 27,742 $ 1,075,673 Adjusted EBITDA $ 282,228 $ (5,391 ) $ 276,837 Depreciation and amortization $ 65,806 $ 2,793 $ 68,599 Goodwill at December 31, 2019 $ 9,425 $  $ 9,425 Capital expenditures $ 238,577 $ 8,789 $ 247,366 Total assets at December 31, 2019 $ 1,381,811 $ 54,300 $ 1,436,111 Reconciliation of net income (loss) to adjusted EBITDA ($ in thousands): Three Months Ended June 30, 2020 Pressure Pumping All Other Total Net loss $ (13,528 ) $ (12,392 ) $ (25,920 ) Depreciation and amortization 38,910 1,263 40,173 Interest expense  791 791 Income tax benefit  (6,460 ) (6,460 ) Loss on disposal of assets 8,587 147 8,734 Stock-based compensation  2,962 2,962 Other expense  267 267 Other general and administrative expense (1)  4,802 4,802 Retention bonus and severance expense 61  61 Adjusted EBITDA $ 34,030 $ (8,620 ) $ 25,410 Three Months Ended June 30, 2019 Pressure Pumping All Other Total Net income (loss) $ 64,230 $ (28,097 ) $ 36,133 Depreciation and amortization 34,023 1,459 35,482 Interest expense 22 2,004 2,026 Income tax expense  10,272 10,272 Loss on disposal of assets 31,117 81 31,198 Stock-based compensation  2,840 2,840 Other expense  276 276 Other general and administrative expense (1)  6,540 6,540 Retention bonus expense 1,795  1,795 Adjusted EBITDA $ 131,187 $ (4,625 ) $ 126,562 Six Months Ended June 30, 2020 Pressure Pumping All Other Total Net loss $ (9,220 ) $ (24,504 ) $ (33,724 ) Depreciation and amortization 77,879 2,498 80,377 Impairment expense 15,559 1,095 16,654 Interest expense 1 2,071 2,072 Income tax benefit  (7,370 ) (7,370 ) Loss on disposal of assets 28,402 186 28,588 Stock-based compensation  3,433 3,433 Other expense  271 271 Other general and administrative expense (1)  9,937 9,937 Retention bonus and severance expense 75 21 96 Adjusted EBITDA $ 112,696 $ (12,362 ) $ 100,334 Six Months Ended June 30, 2019 Pressure Pumping All Other Total Net income (loss) $ 162,324 $ (56,386 ) $ 105,938 Depreciation and amortization 65,806 2,793 68,599 Interest expense 22 3,906 3,928 Income tax expense  32,164 32,164 Loss on disposal of assets 50,123 302 50,425 Stock-based compensation  4,669 4,669 Other expense  464 464 Other general and administrative expense (1)  6,540 6,540 Deferred IPO and retention bonus expense $ 3,953 $ 157 $ 4,110 Adjusted EBITDA $ 282,228 $ (5,391 ) $ 276,837 (1) Other general and administrative expense relates to nonrecurring professional fees paid to external consultants in connection with the Company's expanded audit committee review, SEC investigation and shareholders' litigation.