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PROPERTY, BUILDINGS AND EQUIPMENT | 12 Months Ended
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Dec. 31, 2017
Property, Plant and Equipment [Abstract] |
PROPERTY, BUILDINGS AND EQUIPMENT | 6. PROPERTY, BUILDINGS AND EQUIPMENT The following table sets forth the components of property, buildings and equipment:
| As of December 31,
| 2017 |  | 2016
| (In thousands)
Buildings and leasehold improvements | $ | 117,894 |  |  | $ | 117,461 |
Furniture, fixtures and equipment | 183,801 |  |  | 178,183 |
Software costs | 103,842 |  |  | 93,040 |
| 405,537 |  |  | 388,684 |
Accumulated depreciation and amortization | (278,455 | ) |  | (259,126 | )
| 127,082 |  |  | 129,558 |
Land | 25,814 |  |  | 24,653 |
Construction in progress | 3,549 |  |  | 3,396 |
| $ | 156,445 |  |  | $ | 157,607 |
Depreciation expense was $16.3 million, $17.1 million and $17.8 million, and capitalized software amortization was $9.9 million, $10.6 million and $10.3 million, in 2017, 2016 and 2015, respectively. The unamortized software cost was $22.4 million and $21.6 million as of December 31, 2017 and 2016, respectively. Furniture, fixtures and equipment include capitalized leases of $10.6 million and $12.0 million and related accumulated amortization of $9.0 million and $8.9 million as of December 31, 2017 and 2016, respectively.

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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