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Accrued Expenses and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Payables And Accruals [Abstract] |
Schedule of Accrued Expenses and Other Current Liabilities | Accrued expenses and other current liabilities consisted of the following at December 31:
|  | 2020 |  |  | 2019 |
Deposits |  | $ | 9,881 |  |  | $ | 9,608 |
Restricted contract funds |  |  | 68,138 |  |  |  | — |
Accrued IT and software licensing costs |  |  | 2,157 |  |  |  | 3,983 |
Accrued taxes and insurance premiums |  |  | 4,327 |  |  |  | 3,498 |
Accrued facilities rental and lease exit costs |  |  | 780 |  |  |  | 1,223 |
Accrued interest |  |  | 214 |  |  |  | 693 |
Accrued professional services |  |  | 2,094 |  |  |  | 3,929 |
Accrued dividends |  |  | 2,641 |  |  |  | 2,639 |
Contingent and contractual liabilities from acquisitions |  |  | 683 |  |  |  | 2,700 |
Interest rate swap liability - current |  |  | 3,693 |  |  |  | 1,069 |
Other accrued expenses and current liabilities |  |  | 6,300 |  |  |  | 7,469 |
Total accrued expenses and other current liabilities |  | $ | 100,908 |  |  | $ | 36,811 |

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