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Stock Options and Restricted Shares - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Derivatives, Fair Value [Line Items]
Total stock-based compensation	$ 537	$ 278
Equity Plans
Derivatives, Fair Value [Line Items]
Direct operating costs	52	38
Selling and administrative expenses	485	240
Total stock-based compensation	$ 537	$ 278

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Amount of selling, general and administrative expense classified as other.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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Amount of noncash expense for option under share-based payment arrangement.

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