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Business Acquisitions and Dispositions - Schedule of Valuation Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 44,656,000 | $ 51,802,000 |  |
Accounts receivable, less allowance for expected credit losses of $9,464 and $9,348, respectively | 123,060,000 | 128,217,000 |  |
Unbilled revenues, at estimated billable amounts | 103,528,000 | 103,894,000 |  |
Prepaid expenses and other current assets | 29,490,000 | 23,476,000 |  |
Net Property and Equipment | 36,402,000 | 31,425,000 |  |
Operating lease right-of-use asset, net | 109,315,000 | 102,354,000 | $ 122,300,000 |
Goodwill | 66,537,000 | 80,642,000 |  | $ 96,890,000
Intangible assets arising from business acquisitions, net | 71,176,000 | 75,083,000 |  |
Other noncurrent assets | 70,935,000 | 70,884,000 |  |
TOTAL ASSETS | 752,984,000 | 760,013,000 |  |
Current Liabilities: |  |  |  |
Accounts payable | 41,544,000 | 34,377,000 |  |
Accrued compensation and related costs | 81,848,000 | 68,499,000 |  |
Income taxes payable | 5,822,000 | 3,030,000 |  |
Operating lease liability | 32,745,000 | 30,765,000 |  |
Long-term debt and finance leases, less current installments | 111,758,000 | 148,408,000 |  |
Total Current Liabilities | 242,794,000 | 236,265,000 |  |
Noncontrolling interests | (11,000) | $ 3,250,000 |  |
Crawford Carvallo |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 1,599,000 |  |  |
Accounts receivable, less allowance for expected credit losses of $9,464 and $9,348, respectively | 3,662,000 |  |  |
Unbilled revenues, at estimated billable amounts | 2,930,000 |  |  |
Prepaid expenses and other current assets | 3,613,000 |  |  |
Net Property and Equipment | 828,000 |  |  |
Purchased software, net | 459,000 |  |  |
Operating lease right-of-use asset, net | 8,743,000 |  |  |
Goodwill | 5,501,000 |  |  |
Intangible assets arising from business acquisitions, net | 7,600,000 |  |  |
Other noncurrent assets | 277,000 |  |  |
TOTAL ASSETS | 35,212,000 |  |  |
Current Liabilities: |  |  |  |
Accounts payable | 1,014,000 |  |  |
Accrued compensation and related costs | 3,870,000 |  |  |
Income taxes payable | 662,000 |  |  |
Operating lease liability | 8,743,000 |  |  |
Long-term debt and finance leases, less current installments | 5,803,000 |  |  |
Total Current Liabilities | 20,092,000 |  |  |
Net Assets Acquired, Before Noncontrolling Interests | 15,120,000 |  |  |
Noncontrolling interests | 489,000 |  |  |
Net Assets Acquired, After Noncontrolling Interests | $ 14,631,000 |  |  |

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