| Property, Plant and Equipment | 
Property, plant and equipment, net, consisted of the following:
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June 30, | 
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December 31, | 
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 | 
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2021 | 
 | 
2020 | 
 | 
 
 | 
 | 
(in thousands) | 
 | 
 
|     Land, buildings and improvements | 
 | 
$ | 
1,261,289  | 
 | 
 | 
$ | 
1,239,696  | 
 | 
 | 
 
|     Computer equipment and capitalized software | 
 | 
912,608  | 
 | 
 | 
887,637  | 
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 | 
 
|     Furniture and other equipment | 
 | 
421,932  | 
 | 
 | 
424,363  | 
 | 
 | 
 
|     Construction in progress | 
 | 
146,013  | 
 | 
 | 
151,830  | 
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 | 
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2,741,842  | 
 | 
 | 
2,703,526  | 
 | 
 | 
 
|     Less: accumulated depreciation | 
 | 
1,695,364  | 
 | 
 | 
1,602,112  | 
 | 
 | 
 
 | 
 | 
$ | 
1,046,478  | 
 | 
 | 
$ | 
1,101,414  | 
 | 
 | 
 
 
 | 
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| Gross Carrying Amount and Accumulated Amortization of Definite-Lived Intangible Assets | 
The following table presents the changes in the gross carrying amount and accumulated amortization of definite-lived intangible assets for the six months ended June 30, 2021: 
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Client / vendor relationships | 
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Revenue- generating contracts | 
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Venue management and leaseholds | 
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Trademarks and naming rights | 
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Technology | 
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Other (1)
  | 
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Total | 
 
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(in thousands) | 
 
| Balance as of December 31, 2020: | 
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 | 
 | 
 | 
 | 
 | 
 | 
 
Gross carrying amount  | 
$ | 
496,074  | 
 | 
 | 
$ | 
578,664  | 
 | 
 | 
$ | 
147,956  | 
 | 
 | 
$ | 
150,344  | 
 | 
 | 
$ | 
72,283  | 
 | 
 | 
$ | 
17,413  | 
 | 
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$ | 
1,462,734  | 
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Accumulated amortization  | 
(146,397) | 
 | 
 | 
(277,710) | 
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 | 
(51,924) | 
 | 
 | 
(73,604) | 
 | 
 | 
(45,799) | 
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 | 
(11,700) | 
 | 
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(607,134) | 
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| Net | 
349,677  | 
 | 
 | 
300,954  | 
 | 
 | 
96,032  | 
 | 
 | 
76,740  | 
 | 
 | 
26,484  | 
 | 
 | 
5,713  | 
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 | 
855,600  | 
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| Gross carrying amount: | 
 | 
 | 
 | 
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 | 
 | 
 | 
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 | 
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Acquisitions—current year  | 
2,086  | 
 | 
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—  | 
 | 
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—  | 
 | 
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—  | 
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10,296  | 
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2,650  | 
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 | 
15,032  | 
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Acquisitions—prior year  | 
5,557  | 
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 | 
—  | 
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—  | 
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—  | 
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—  | 
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—  | 
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5,557  | 
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| Foreign exchange | 
1,613  | 
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(1,817) | 
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(440) | 
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 | 
399  | 
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173  | 
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(4) | 
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(76) | 
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Other (2)
  | 
(29,276) | 
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(24,497) | 
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(631) | 
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(2,166) | 
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(24,477) | 
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(8,234) | 
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 | 
(89,281) | 
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| Net change | 
(20,020) | 
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(26,314) | 
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 | 
(1,071) | 
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 | 
(1,767) | 
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(14,008) | 
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(5,588) | 
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 | 
(68,768) | 
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| Accumulated amortization: | 
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Amortization   | 
(39,051) | 
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(33,546) | 
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(7,433) | 
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(6,968) | 
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(10,988) | 
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(2,471) | 
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(100,457) | 
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| Foreign exchange | 
536  | 
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 | 
1,247  | 
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(7) | 
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(110) | 
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(193) | 
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—  | 
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1,473  | 
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Other (2)
  | 
29,276  | 
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 | 
24,487  | 
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 | 
642  | 
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 | 
2,214  | 
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 | 
24,579  | 
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8,456  | 
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 | 
89,654  | 
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| Net change | 
(9,239) | 
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(7,812) | 
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(6,798) | 
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 | 
(4,864) | 
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13,398  | 
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 | 
5,985  | 
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(9,330) | 
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| Balance as of June 30, 2021: | 
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Gross carrying amount  | 
476,054  | 
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 | 
552,350  | 
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 | 
146,885  | 
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 | 
148,577  | 
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 | 
58,275  | 
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 | 
11,825  | 
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 | 
1,393,966  | 
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Accumulated amortization  | 
(155,636) | 
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 | 
(285,522) | 
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 | 
(58,722) | 
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(78,468) | 
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 | 
(32,401) | 
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 | 
(5,715) | 
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 | 
(616,464) | 
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| Net | 
$ | 
320,418  | 
 | 
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$ | 
266,828  | 
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$ | 
88,163  | 
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$ | 
70,109  | 
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$ | 
25,874  | 
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$ | 
6,110  | 
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$ | 
777,502  | 
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______________ 
  
(1)          Other primarily includes intangible assets for non-compete agreements.     
 
(2)          Other primarily includes netdowns of fully amortized or impaired assets.
 
 | 
[1],[2] | 
| Changes in Goodwill by Segment | 
 The following table presents the changes in the carrying amount of goodwill in each of our reportable segments for the six months ended June 30, 2021: 
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Concerts | 
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Ticketing | 
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Sponsorship & Advertising | 
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Total | 
 
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(in thousands) | 
 
| Balance as of December 31, 2020: | 
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| Goodwill  | 
$ | 
1,318,273  | 
 | 
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$ | 
782,559  | 
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$ | 
463,734  | 
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$ | 
2,564,566  | 
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| Accumulated impairment losses | 
(435,363) | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
 | 
 | 
(435,363) | 
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|                  Net | 
882,910  | 
 | 
 | 
782,559  | 
 | 
 | 
463,734  | 
 | 
 | 
 | 
 | 
2,129,203  | 
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 | 
 | 
 | 
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 | 
 | 
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| Acquisitions—current year | 
1,336  | 
 | 
 | 
—  | 
 | 
 | 
—  | 
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 | 
 | 
1,336  | 
 | 
 
| Acquisitions—prior year | 
(1,815) | 
 | 
 | 
(3,740) | 
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 | 
419  | 
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(5,136) | 
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| Foreign exchange | 
369  | 
 | 
 | 
(2,433) | 
 | 
 | 
(635) | 
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 | 
 | 
 | 
(2,699) | 
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 | 
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 | 
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 | 
 | 
 
| Balance as of June 30, 2021: | 
 | 
 | 
 | 
 | 
 | 
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 | 
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| Goodwill | 
1,318,163  | 
 | 
 | 
776,386  | 
 | 
 | 
463,518  | 
 | 
 | 
 | 
 | 
2,558,067  | 
 | 
 
| Accumulated impairment losses | 
(435,363) | 
 | 
 | 
—  | 
 | 
 | 
—  | 
 | 
 | 
 | 
 | 
(435,363) | 
 | 
 
|                  Net | 
$ | 
882,800  | 
 | 
 | 
$ | 
776,386  | 
 | 
 | 
$ | 
463,518  | 
 | 
 | 
 | 
 | 
$ | 
2,122,704  | 
 | 
 
  
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