LOGM 2017 Annual Report

Future estimated amortization expense for intangible assets at December 31, 2017 is as follows (in thousands): Amortization Expense (Years Ending December 31) Amount 2018 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 251,683 2019 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232,515 2020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196,330 2021 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160,884 2022 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125,434 Thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182,751 Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,149,597 6. Property and Equipment Property and equipment consisted of the following (in thousands): December 31, 2016 2017 Land, buildings and site improvements . . . . . . . . . . . . . . . $ — $ 34,050 Computer equipment and software . . . . . . . . . . . . . . . . . . 35,432 62,478 Office equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6,315 9,491 Furniture & fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8,947 17,965 Construction in progress . . . . . . . . . . . . . . . . . . . . . . . . . . 1,443 34 Leasehold improvements . . . . . . . . . . . . . . . . . . . . . . . . . . 9,979 26,499 Total property and equipment . . . . . . . . . . . . . . . . . . . . 62,116 150,517 Less accumulated depreciation . . . . . . . . . . . . . . . . . . . . . (38,249) (58,363) Property and equipment, net . . . . . . . . . . . . . . . . . . . . . . . $ 23,867 $ 92,154 Depreciation expense for property and equipment was $7.6 million, $9.7 million and $29.8 million for the years ended December 31, 2015, 2016 and 2017, respectively. 7. Accrued Liabilities Accrued liabilities consisted of the following (in thousands): December 31, 2016 2017 Marketing programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $ 4,274 $ 6,883 Payroll and payroll-related . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11,886 30,204 Professional fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,429 5,353 Acquisition-related (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9,539 6,783 Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8,125 33,203 Total accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $35,253 $82,426 (1) Acquisition-related costs include transaction, transition and integration-related fees and expenses and con- tingent retention-based bonus costs. 74