Selected Financial Statement Information | Selected Financial Statement Information Property and Equipment Our Property and Equipment is grouped into Medical Equipment and Property and Office Equipment. Depreciation of medical equipment is provided on the straight-line method over the equipment’s estimated useful life, generally four Property and office equipment includes property, leasehold improvements and office equipment. Depreciation and amortization of property and office equipment is provided on the straight-line method over the lesser of the remaining useful life or lease term for leasehold improvements and three . (in thousands) June 30, December 31, Medical equipment $ 372,639 $ 359,284 Less: Accumulated depreciation (233,142) (209,516) Medical equipment, net 139,497 149,768 Leasehold improvements 45,938 39,026 Office equipment and vehicles 148,187 135,643 194,125 174,669 Less: Accumulated depreciation (82,132) (66,067) Property and office equipment, net 111,993 108,602 Total property and equipment, net $ 251,490 $ 258,370 Depreciation expense recognized during the three months ended June 30, 2022 and 2021 was $23.9 and $26.7 million, respectively. Depreciation expense recognized during the six months ended June 30, 2022 and 2021 was $46.4 and $52.9 million, respectively. There were no impairment charges on property and equipment during the three and six months ended June 30, 2022 and 2021. Goodwill and Other Intangible Assets Our goodwill as of June 30, 2022 and December 31, 2021 consists of the following: (in thousands) Balance at December 31, 2021 $ 1,213,121 Acquisitions 5,208 Balance at June 30, 2022 $ 1,218,329 There were no impairment losses recorded on goodwill through June 30, 2022. Our other intangible assets as of June 30, 2022 and December 31, 2021 consist of the following: June 30, 2022 (in thousands) Gross Accumulated Net Finite-life intangibles Customer relationship $ 756,889 $ (235,101) $ 521,788 Non-compete agreements 5,235 (4,511) 724 Trade names 7,806 (1,665) 6,141 Developed technology 2,300 (479) 1,821 Total other intangible assets $ 772,230 $ (241,756) $ 530,474 December 31, 2021 (in thousands) Gross Accumulated Net Finite-life intangibles Customer relationship $ 756,889 $ (194,312) $ 562,577 Non-compete agreements 14,613 (13,222) 1,391 Trade names 9,179 (2,230) 6,949 Developed technology 2,300 (58) 2,242 Total other intangible assets $ 782,981 $ (209,822) $ 573,159 Our other intangible assets are amortized over their estimated economic lives of three Total amortization expense related to intangible assets was $21.5 and $20.6 million for the three months ended June 30, 2022 and 2021, respectively, and $42.7 and $37.1 million for the six months ended June 30, 2022 and 2021, respectively. There were no impairment charges during the three and six months ended June 30, 2022 and 2021 with respect to other intangible assets. The estimated future amortization expense for identifiable intangible assets during the remainder of 2022 and the next five years is as follows: (in thousands) Remainder of 2022 $ 43,280 2023 79,108 2024 68,604 2025 62,242 2026 55,870 2027 49,516 Supplementary Cash Flow Information Supplementary cash flow information is as follows: Six Months Ended (in thousands) 2022 2021 Non-cash activities: Property and equipment purchases included in accounts payable (at end of period) $ 4,976 $ 2,672 Finance lease assets and liability additions 3,236 1,644 Operating lease right-of-use assets and operating lease liability additions 16,472 5,543 Issuance of common stock related to acquisition — 11,300 |