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PROPERTY AND EQUIPMENT, NET | 12 Months Ended
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Dec. 31, 2020
Property, Plant and Equipment [Abstract] |
PROPERTY AND EQUIPMENT, NET | PROPERTY AND EQUIPMENT, NET Property and equipment, net consists of the following at December 31:
| Useful Lives (years) |  | 2020 |  | 2019
Land | — |  |  | $ | 18,653 |  |  | $ | 18,653 |
Building and leasehold improvements | 5-39 |  | 147,729 |  |  | 137,448 |
Computer equipment and purchased software | 3-5 |  | 108,571 |  |  | 99,435 |
Furniture and fixtures | 5 |  | 30,666 |  |  | 28,506 |
Transportation equipment | 5 |  | 295 |  |  | 402 |
|  |  | 305,914 |  |  | 284,444 |
Accumulated depreciation and amortization |  |  | (137,910) |  |  | (112,583) |
Property and equipment, net |  |  | $ | 168,004 |  |  | $ | 171,861 |
Depreciation expense was $25.5 million in 2020, $23.4 million in 2019, and $21.2 million in 2018. We paid $9.9 million and $20.8 million for real estate and the expansion of existing buildings in 2020 and 2019, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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