Segment Data | Segment Data We aggregate our operating segments into four reportable segments: (i) pipelines and transportation; (ii) wholesale marketing and terminalling; (iii) 3 Bear operations; and (iv) investment in pipeline joint ventures. Based on the manner in which the Partnership’s Chief Operating Decision Maker (“CODM”) is currently reviewing the financial and operating information and metrics of the business of and for the three months ended June 30, 2022, inclusive of the 3 Bear Acquisition, the acquisition of 3 Bear resulted in a new operating segment as of and for the one month from the Acquisition Date through June 30, 2022, which is deemed to be reportable based on our quantitative assessment. While this new operating segment has certain common characteristics with our pipelines and transportation reportable segment, it also involves new operations (including natural gas gathering, processing and transportation as well as water disposal and recycling) and operates in new geographic location. Additionally, the Acquisition occurred in the last month of the quarter, and integration efforts continue to be in process as of June 30, 2022. For these reasons, the 3 Bear operating segment has been presented as a separate reportable segment as of and for the three months ended June 30, 2022. As we continue to integrate the 3 Bear operations in the coming quarters and refine how we manage those operations in the context of our overall business, it is possible that segment presentation could change. Our operating segments adhere to the accounting policies used for our consolidated financial statements. Our operating segments are managed separately because each segment requires different industry knowledge, technology and marketing strategies. Decisions concerning the allocation of resources and assessment of operating performance are made based on this segmentation. Management measures the operating performance of each of its reportable segments based on segment contribution margin, with the exception of investments in pipeline joint ventures segment, which is measured based on net income. Segment contribution margin is defined as net revenues less cost of materials and other and operating expenses, excluding depreciation and amortization. The following is a summary of business segment operating performance as measured by contribution margin, with the exception of investments in pipeline joint ventures segment, which is measured based on equity method income (loss), for the periods indicated (in thousands): (in thousands) Three Months Ended June 30, Six Months Ended June 30, 2022 2021 2022 2021 Pipelines and Transportation Net revenues: Affiliate $ 75,294 $ 65,664 $ 146,316 $ 128,712 Third party 5,312 4,771 10,095 6,698 Total pipelines and transportation 80,606 70,435 156,411 135,410 Cost of materials and other 18,666 14,346 38,268 27,425 Operating expenses (excluding depreciation and amortization) 13,539 10,858 26,497 21,030 Segment contribution margin $ 48,401 $ 45,231 $ 91,646 $ 86,955 Capital spending $ 21,493 $ 1,531 $ 29,642 $ 7,376 Wholesale Marketing and Terminalling Net revenues: Affiliate $ 46,110 $ 23,058 $ 98,842 $ 56,204 Third party 119,430 74,985 197,474 129,777 Total wholesale marketing and terminalling 165,540 98,043 296,316 185,981 Cost of materials and other 143,920 74,349 250,512 142,441 Operating expenses (excluding depreciation and amortization) 5,296 4,710 10,445 9,349 Segment contribution margin $ 16,324 $ 18,984 $ 35,359 $ 34,191 Capital spending $ 122 $ 1,060 $ 1,059 $ 3,014 3 Bear Operations Net revenues: Affiliate $ 2,962 $ — $ 2,962 $ — Third party $ 17,642 $ — $ 17,642 $ — Total 3 Bear 20,604 — 20,604 — Cost of materials and other 13,774 — 13,774 — Operating expenses (excluding depreciation and amortization) 2,154 — 2,154 — Segment contribution margin $ 4,676 $ — $ 4,676 $ — Capital spending $ 5,111 $ — $ 5,111 $ — Investments in Pipeline Joint Ventures Income from equity method investments $ 7,073 $ 6,642 $ 14,099 $ 10,691 Equity method investments contributions $ — $ (14) $ — $ (1,393) Consolidated Net revenues: Affiliate $ 124,366 $ 88,722 $ 248,120 $ 184,916 Third party 142,384 79,756 225,211 136,475 Total Consolidated 266,750 168,478 473,331 321,391 Cost of materials and other 176,360 88,695 302,554 169,866 Operating expenses (excluding depreciation and amortization presented below) 20,989 15,568 39,096 30,379 Contribution margin 69,401 64,215 131,681 121,146 General and administrative expenses 13,773 5,990 18,868 10,095 Depreciation and amortization 13,422 9,967 23,757 20,706 Other operating expense (income), net — (136) 12 (219) Operating income 42,206 48,394 89,044 90,564 Capital spending and capital contributions to equity method investments $ 26,726 $ 2,591 $ 35,812 $ 10,390 The following table summarizes the total assets for each segment as of June 30, 2022 and December 31, 2021 (in thousands). Assets for each segment include property, plant and equipment, equity method investments, intangible assets and inventory. June 30, 2022 December 31, 2021 Pipelines and transportation $ 485,748 $ 452,690 Wholesale marketing and terminalling 192,105 211,723 3 Bear operations 647,531 — Investments in pipeline joint ventures 248,675 250,030 Other (1) 35,236 20,628 Total assets 1,609,295 $ 935,071 (1) Other includes cash and cash equivalents and related party receivables and other assets which are recorded at the corporate level. Property, plant and equipment, accumulated depreciation and depreciation expense for the Partnership's reportable segments, excluding the investment in pipeline joint ventures segment, as of and for the three and six months ended June 30, 2022 were as follows (in thousands): Pipelines and Transportation Wholesale Marketing and Terminalling 3 Bear Operations Consolidated Property, plant and equipment $ 633,165 $ 120,745 $ 387,912 $ 1,141,822 Less: accumulated depreciation (221,461) (65,095) (1,427) (287,983) Property, plant and equipment, net $ 411,704 $ 55,650 $ 386,485 $ 853,839 Depreciation expense for the three months ended June 30, 2022 $ 7,884 $ 2,603 $ 1,427 $ 11,914 Depreciation expense for the six months ended June 30, 2022 $ 15,821 $ 5,001 $ 1,427 $ 22,249 In accordance with ASC 360, Property, Plant & Equipment |