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Stock Options - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stock Options
Direct operating costs	$ 39	$ 20	$ 79	$ 38
Selling and administrative expenses	259	125	389	236
Total stock-based compensation	$ 298	$ 145	$ 468	$ 274

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

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Amount of noncash expense for share-based payment arrangement.

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Amount of noncash expense for option under share-based payment arrangement.

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