Details of Certain Balance Sheet Accounts (Schedule of Prepaid Expenses and Other Current Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Details Of Certain Balance Sheet Accounts [Abstract]
Income tax receivable	$ 7,556
Prepaid payroll taxes	3,681	$ 3,093
Prepaid workers’ compensation and liability insurance	3,206	2,838
Workers’ compensation insurance receivable	1,559	1,860
Other	2,489	2,178
Total prepaid expenses and other current assets	$ 18,491	$ 9,969

Details Of Certain Balance Sheet Accounts Abstract

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Prepaid Workers Compensation And Liability Insurance Current

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Workers' compensation insurance receivable

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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Amount of current assets classified as other.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

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