Consolidated Statements of Operations (Parenthetical) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Direct operating expenses	$ 27,823	$ 26,561
Non-cash stock-based compensation	2,573	1,071
Depreciation and amortization	6,395	5,184
Related Parties
Direct operating expenses	1,576	1,937
Depreciation and amortization	231	307
Direct Operating Expenses
Non-cash stock-based compensation	958	316
Depreciation and amortization	4,350	3,843
Corporate Expenses
Non-cash stock-based compensation	1,615	755
Depreciation and amortization	78	188
Selling, General and Administrative Expenses
Depreciation and amortization	$ 1,967	$ 1,153

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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