Unaudited Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Allowance	$ 990	$ 990
Common stock Class A
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	140,000,000	140,000,000
Common stock, shares issued (in shares)	39,462,270	35,704,400
Common stock, shares outstanding (in shares)	39,462,270	35,704,400
Common Stock Class B
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	35,000,000	35,000,000
Common stock, shares issued (in shares)	13,113,164	15,777,083
Common stock, shares outstanding (in shares)	13,113,164	15,777,083