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Long-Lived Assets (Tables) | 12 Months Ended
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Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
Schedule of textbook library assets | Textbook library, net consisted of the following (in thousands):
| December 31,
| 2021 |  | 2020
Textbook library | $ | 27,569 |  |  | $ | 47,293 |
Less accumulated depreciation | (16,328) |  |  | (13,144) |
Textbook library, net | $ | 11,241 |  |  | $ | 34,149 |
Property, plant and equipment | Property and equipment, net consisted of the following (in thousands):
| December 31,
| 2021 |  | 2020
Content | $ | 258,005 |  |  | $ | 181,938 |
Internal-use software and website development | 29,711 |  |  | 15,646 |
Leasehold improvements | 19,913 |  |  | 19,574 |
Furniture and fixtures | 4,352 |  |  | 3,891 |
Computer and equipment | 3,370 |  |  | 3,368 |
Property and equipment | 315,351 |  |  | 224,417 |
Less accumulated depreciation and amortization | (145,413) |  |  | (98,610) |
Property and equipment, net | $ | 169,938 |  |  | $ | 125,807 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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