PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL | PROPERTY, PLANT AND EQUIPMENT, INTANGIBLE ASSETS AND GOODWILL Dispositions During the first quarter of 2016, Americas outdoor entered into an agreement to sell its Indianapolis, Indiana market to Fairway Media Group, LLC in exchange for certain assets in Atlanta, Georgia with a fair value of $39.6 million , plus $43.0 million in cash, net of closing costs. The assets acquired as part of the transaction consisted of $9.9 million in fixed assets, $29.5 million in intangible assets (including $2.3 million in goodwill) and $0.2 million in other assets. The transaction closed in January 2017. The Company recognized a net gain of $28.6 million related to the sale, which is included within Other operating income, net. Property, Plant and Equipment The Company’s property, plant and equipment consisted of the following classes of assets as of March 31, 2017 and December 31, 2016 , respectively: (In thousands) March 31, December 31, Land, buildings and improvements $ 578,194 $ 570,566 Structures 2,720,902 2,684,673 Towers, transmitters and studio equipment 352,307 350,760 Furniture and other equipment 652,907 622,848 Construction in progress 73,050 91,655 4,377,360 4,320,502 Less: accumulated depreciation 2,454,729 2,372,340 Property, plant and equipment, net $ 1,922,631 $ 1,948,162 Indefinite-lived Intangible Assets The Company’s indefinite-lived intangible assets consist of Federal Communications Commission (“FCC”) broadcast licenses in its iHM segment and billboard permits in its Americas outdoor advertising segment. Due to significant differences in both business practices and regulations, billboards in the International outdoor segment are subject to long-term, finite contracts unlike the Company’s permits in the United States and Canada. Accordingly, there are no indefinite-lived intangible assets in the International outdoor segment. Other Intangible Assets Other intangible assets include definite-lived intangible assets and permanent easements. The Company’s definite-lived intangible assets primarily include transit and street furniture contracts, talent and representation contracts, customer and advertiser relationships, and site-leases and other contractual rights, all of which are amortized over the shorter of either the respective lives of the agreements or over the period of time the assets are expected to contribute directly or indirectly to the Company’s future cash flows. Permanent easements are indefinite-lived intangible assets which include certain rights to use real property not owned by the Company. The Company periodically reviews the appropriateness of the amortization periods related to its definite-lived intangible assets. These assets are recorded at cost. The following table presents the gross carrying amount and accumulated amortization for each major class of other intangible assets as of March 31, 2017 and December 31, 2016 , respectively: (In thousands) March 31, 2017 December 31, 2016 Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Transit, street furniture and other outdoor $ 569,114 $ (437,297 ) $ 563,863 $ (426,752 ) Customer / advertiser relationships 1,222,518 (1,042,587 ) 1,222,519 (1,012,380 ) Talent contracts 319,384 (285,080 ) 319,384 (281,060 ) Representation contracts 253,359 (231,210 ) 253,511 (229,413 ) Permanent easements 162,893 — 159,782 — Other 390,193 (225,106 ) 390,171 (219,117 ) Total $ 2,917,461 $ (2,221,280 ) $ 2,909,230 $ (2,168,722 ) Total amortization expense related to definite-lived intangible assets for the three months ended March 31, 2017 and 2016 was $49.1 million and $55.3 million , respectively. As acquisitions and dispositions occur in the future, amortization expense may vary. The following table presents the Company’s estimate of amortization expense for each of the five succeeding fiscal years for definite-lived intangible assets: (In thousands) 2018 $ 128,047 2019 44,926 2020 38,279 2021 34,637 2022 29,813 Goodwill The following table presents the changes in the carrying amount of goodwill in each of the Company’s reportable segments: (In thousands) iHM Americas Outdoor Advertising International Outdoor Advertising Other Consolidated Balance as of December 31, 2015 $ 3,288,481 $ 534,683 $ 223,892 $ 81,831 $ 4,128,887 Impairment — — (7,274 ) — (7,274 ) Dispositions — (6,934 ) (30,718 ) — (37,652 ) Foreign currency — (1,998 ) (5,051 ) — (7,049 ) Assets held for sale — (10,337 ) — — (10,337 ) Balance as of December 31, 2016 $ 3,288,481 $ 515,414 $ 180,849 $ 81,831 $ 4,066,575 Acquisitions — 2,252 — — 2,252 Dispositions — — (1,817 ) — (1,817 ) Foreign currency — 583 2,460 — 3,043 Assets held for sale — 89 — — 89 Balance as of March 31, 2017 $ 3,288,481 $ 518,338 $ 181,492 $ 81,831 $ 4,070,142 |